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Document and Entity Supplemental Information Document (USD $)
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6 Months Ended | ||
|---|---|---|---|
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Jun. 30, 2014
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Jul. 24, 2014
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Jun. 30, 2013
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| Entity Information [Line Items] | |||
| Entity Registrant Name | CENTERPOINT ENERGY INC. | ||
| Entity Central Index Key | 0001130310 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Document Type | 10-Q | ||
| Document Period End Date | Jun. 30, 2014 | ||
| Document Fiscal Year Focus | 2014 | ||
| Document Fiscal Period Focus | Q2 | ||
| Amendment Flag | false | ||
| Entity Common Stock, Shares Outstanding | 429,795,830 | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Public Float | $ 9,975,930,939 |
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- Definition
If the value is true, then the document is an amendment to previously-filed/accepted document. No definition available.
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- Definition
End date of current fiscal year in the format --MM-DD. No definition available.
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- Definition
This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY. No definition available.
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- Definition
This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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- Definition
The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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- Definition
The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other". No definition available.
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- Definition
A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. No definition available.
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- Definition
Indicate "Yes" or "No" whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition
Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated) or (5) Smaller Reporting Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Details
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- Definition
State aggregate market value of voting and non-voting common equity held by non-affiliates computed by reference to price at which the common equity was last sold, or average bid and asked price of such common equity, as of the last business day of registrant's most recently completed second fiscal quarter. The public float should be reported on the cover page of the registrants form 10K. No definition available.
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- Definition
The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Indicate "Yes" or "No" if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. No definition available.
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- Definition
Indicate "Yes" or "No" if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A. No definition available.
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Condensed Statements of Consolidated Income (Unaudited) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Revenues | $ 1,884 | $ 1,894 | $ 5,047 | $ 4,282 |
| Expenses: | ||||
| Natural gas | 880 | 880 | 2,923 | 2,104 |
| Operation and maintenance | 469 | 446 | 948 | 930 |
| Depreciation and amortization | 256 | 253 | 491 | 493 |
| Taxes other than income taxes | 93 | 92 | 204 | 200 |
| Total | 1,698 | 1,671 | 4,566 | 3,727 |
| Operating Income | 186 | 223 | 481 | 555 |
| Other Income (Expense): | ||||
| Gain on marketable securities | 72 | 30 | 42 | 104 |
| Loss on indexed debt securities | (50) | (27) | (7) | (78) |
| Interest and other finance charges | (89) | (85) | (173) | (183) |
| Interest on transition and system restoration bonds | (30) | (34) | (60) | (69) |
| Equity in earnings of unconsolidated affiliates, net | 71 | 37 | 162 | 42 |
| Other, net | 9 | 0 | 18 | 6 |
| Total | (17) | (79) | (18) | (178) |
| Income Before Income Taxes | 169 | 144 | 463 | 377 |
| Income tax expense | 62 | 244 | 171 | 330 |
| Net Income (Loss) | $ 107 | $ (100) | $ 292 | $ 47 |
| Basic Earnings (Loss) Per Share | $ 0.25 | $ (0.23) | $ 0.68 | $ 0.11 |
| Diluted Earnings (Loss) Per Share | $ 0.25 | $ (0.23) | $ 0.68 | $ 0.11 |
| Dividends Declared Per Share | $ 0.2375 | $ 0.2075 | $ 0.4750 | $ 0.4150 |
| Weighted Average Shares Outstanding, Basic | 429,773,000 | 428,571,000 | 429,470,000 | 428,268,000 |
| Weighted Average Shares Outstanding, Diluted | 431,409,000 | 430,554,000 | 431,106,000 | 430,246,000 |
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- Definition
Gain (loss) on Indexed Debt Securities. No definition available.
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- Definition
Interest on Transition and System Restoration Bonds. No definition available.
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- Definition
The amount of operating expense for the period for recurring costs associated with normal operations including general and administrative expenses, and routine plant mainentnance and repairs. No definition available.
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- Definition
Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Cost of natural gas purchased and associated transportation and storage costs during the period. No definition available.
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- Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Interest and debt related expenses associated with nonoperating financing activities of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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- Details
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| X | ||||||||||
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- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
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| X | ||||||||||
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- Definition
The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Condensed Statements of Consolidated Comprehensive Income (Unaudited) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Net income (loss) | $ 107 | $ (100) | $ 292 | $ 47 |
| Other comprehensive income: | ||||
| Adjustment related to pension and other postretirement plans (net of tax of $2, $1, $3 and $3) | 2 | 2 | 3 | 5 |
| Total | 2 | 2 | 3 | 5 |
| Comprehensive income (loss) | $ 109 | $ (98) | $ 295 | $ 52 |
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- Definition
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Condensed Statements of Consolidated Comprehensive Income Comprehensive Income Parentheticals (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Statement of Comprehensive Income [Abstract] | ||||
| Other Comprehensive Income, Pension and Other Postretirement Benefit Plans, Tax | $ 2 | $ 1 | $ 3 | $ 3 |
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- Definition
Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
No authoritative reference available. No definition available.
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- Definition
No authoritative reference available. No definition available.
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- Definition
Long-term transition and system restoration bonds are securitization bonds issued to recover qualified stranded costs and qualified storm recovery costs. This represents the current portion. No definition available.
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- Definition
No authoritative reference available. No definition available.
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- Definition
Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due after 1 year (or 1 business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of obligation due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of the portion of long-term debt not otherwise specified in the taxonomy that is scheduled to be repaid within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of debt not otherwise defined (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. No definition available.
|
|
Condensed Consolidated Balance Sheets Balance Sheets Parentheticals (USD $)
In Millions, except Share data, unless otherwise specified |
Jun. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Commitments and Contingencies (Note 12) | ||
| Total common stock outstanding (in shares) | 429,795,830 | 428,798,446 |
| Cash and cash equivalents | 206 | 208 |
| Bad Debt Reserve | 26 | 28 |
| Accounts receivable, net | 834 | 851 |
| Prepaid expenses and other current assets | 173 | 125 |
| Regulatory assets | 3,519 | 3,726 |
|
Variable Interest Entity, Primary Beneficiary [Member]
|
||
| Cash and cash equivalents | 188 | 207 |
| Accounts receivable, net | 94 | 60 |
| Prepaid expenses and other current assets | 51 | 41 |
| Regulatory assets | $ 2,971 | $ 3,179 |
| X | ||||||||||
|
- Definition
Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Cash Contributed No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Increase (decrease) in interest and taxes accrued. No definition available.
|
| X | ||||||||||
|
- Definition
Indexed Debt Securities, Unrealized Gain (Loss) No definition available.
|
| X | ||||||||||
|
- Definition
Redemption of Indexed Debt Securities No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the assets (liabilities) created through trading commodity-based derivative instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in money or securities placed with a broker or counterparty as security for a trading or derivative position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in other current operating assets not separately disclosed in the statement of cash flows. No definition available.
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in other current operating liabilities not separately disclosed in the statement of cash flows. No definition available.
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in other noncurrent operating assets not separately disclosed in the statement of cash flows. No definition available.
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in other noncurrent operating liabilities not separately disclosed in the statement of cash flows. No definition available.
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in other assets used in operating activities less other operating liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets and liabilities, other noncurrent assets and liabilities, or a combination of other current and noncurrent assets and liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the value of the asset or liability created by an over or under recovery. An over under-recovery means that the basic energy price based on the daily product price and exchange rate is less (over) or more (under) than the basic energy price used in the calculation of the monthly retail energy product. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash paid for interest during the period net of cash paid for interest that is capitalized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow for incremental, external costs directly pertaining to an early extinguishment of debt, including legal costs and prepayment penalties, and excluding interest and repayment of debt principal. No definition available.
|
| X | ||||||||||
|
- Definition
The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash or cash equivalents contributed by the entity to fund its pension plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net cash inflow or cash outflow from issuing (borrowing) and repaying commercial paper. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Background and Basis of Presentation
|
6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
|||||||||
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||
| Background and Basis of Presentation | Background and Basis of Presentation General. Included in this Quarterly Report on Form 10-Q (Form 10-Q) of CenterPoint Energy, Inc. are the condensed consolidated interim financial statements and notes (Interim Condensed Financial Statements) of CenterPoint Energy, Inc. and its subsidiaries (collectively, CenterPoint Energy). The Interim Condensed Financial Statements are unaudited, omit certain financial statement disclosures and should be read with the Annual Report on Form 10-K of CenterPoint Energy for the year ended December 31, 2013 (CenterPoint Energy Form 10-K). Background. CenterPoint Energy, Inc. is a public utility holding company. CenterPoint Energy’s operating subsidiaries own and operate electric transmission and distribution facilities and natural gas distribution facilities and own an interest in Enable Midstream Partners, LP (Enable) as described in Note 7. As of June 30, 2014, CenterPoint Energy’s indirect wholly owned subsidiaries included:
As of June 30, 2014, CenterPoint Energy had four variable interest entities (VIEs) consisting of transition and system restoration bond companies, which it consolidates. The consolidated VIEs are wholly owned bankruptcy remote special purpose entities that were formed specifically for the purpose of securitizing transition and system restoration property. Creditors of CenterPoint Energy have no recourse to any assets or revenues of the transition and system restoration bond companies. The bonds issued by these VIEs are payable only from and secured by transition and system restoration property, and the bondholders have no recourse to the general credit of CenterPoint Energy. Basis of Presentation. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. CenterPoint Energy’s Interim Condensed Financial Statements reflect all normal recurring adjustments that are, in the opinion of management, necessary to present fairly the financial position, results of operations and cash flows for the respective periods. Amounts reported in CenterPoint Energy’s Condensed Statements of Consolidated Income are not necessarily indicative of amounts expected for a full-year period due to the effects of, among other things, (a) seasonal fluctuations in demand for energy and energy services, (b) changes in energy commodity prices, (c) timing of maintenance and other expenditures and (d) acquisitions and dispositions of businesses, assets and other interests. For a description of CenterPoint Energy’s reportable business segments, see Note 14. |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
New Accounting Pronouncements
|
6 Months Ended |
|---|---|
|
Jun. 30, 2014
|
|
| New Accounting Pronouncements and Changes in Accounting Principles [Abstract] | |
| Description of New Accounting Pronouncements Not yet Adopted [Text Block] | New Accounting Pronouncements In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-08 (ASU 2014-08), Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which significantly changes the existing accounting guidance on discontinued operations. Under ASU 2014-08, only those disposals of components of an entity that represent a strategic shift that has (or will have) a major effect on an entity's operations and financial results should be reported as a discontinued operation. ASU 2014-08 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. ASU 2014-08 should be applied to components classified as held for sale after its effective date. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. The adoption is expected to reduce the number of disposals that meet the definition of a discontinued operation. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (ASU 2014-09), which supersedes most current revenue recognition guidance. ASU 2014-09 provides a comprehensive new revenue recognition model that requires revenue to be recognized in a manner that depicts the transfer of goods or services to a customer at an amount that reflects the consideration expected to be received in exchange for those goods or services. ASU 2014-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. Early adoption is not permitted, and entities have the option of using either a full retrospective or a modified retrospective adoption approach. Accordingly, CenterPoint Energy will adopt ASU 2014-09 on January 1, 2017, and is currently evaluating the impact that this standard will have on its financial position, results of operations, cash flows and disclosures. Management believes that other recently issued standards, which are not yet effective, will not have a material impact on CenterPoint Energy’s consolidated financial position, results of operations or cash flows upon adoption. |
| X | ||||||||||
|
- Definition
The entire disclosure for a new accounting pronouncement that has been issued but not yet adopted. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Employee Benefit Plans
|
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2014
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| Compensation and Retirement Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Employee Benefit Plans | Employee Benefit Plans CenterPoint Energy’s net periodic cost includes the following components relating to pension and postretirement benefits:
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CenterPoint Energy's changes in accumulated comprehensive loss related to defined benefit and postretirement plans are as follows:
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CenterPoint Energy expects to contribute a total of approximately $96 million to its pension plans in 2014, of which approximately $31 million and $34 million, respectively, was contributed during the three and six months ended June 30, 2014. CenterPoint Energy expects to contribute a total of approximately $17 million to its postretirement benefits plan in 2014, of which approximately $4 million and $8 million, respectively, was contributed during the three and six months ended June 30, 2014. |
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- Definition
The entire disclosure for pension and other postretirement benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Regulatory Accounting
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6 Months Ended |
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Jun. 30, 2014
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| Regulatory Assets and Liabilities, Other Disclosures [Abstract] | |
| Regulatory Matters | Regulatory Accounting As of June 30, 2014, CenterPoint Energy has not recognized an allowed equity return of $476 million because such return will be recognized as it is recovered in rates. During the three months ended June 30, 2014 and 2013, CenterPoint Houston recognized approximately $17 million and $12 million, respectively, of the allowed equity return not previously recognized. During the six months ended June 30, 2014 and 2013, CenterPoint Houston recognized approximately $32 million and $20 million, respectively, of the allowed equity return not previously recognized. |
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- Definition
The entire disclosure for public utilities. No definition available.
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- Details
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Derivative Instruments
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2014
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| Derivative Instruments and Hedging Activities Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Derivative Instruments | Derivative Instruments CenterPoint Energy is exposed to various market risks. These risks arise from transactions entered into in the normal course of business. CenterPoint Energy utilizes derivative instruments such as physical forward contracts, swaps and options to mitigate the impact of changes in commodity prices and weather on its operating results and cash flows. Such derivatives are recognized in CenterPoint Energy’s Condensed Consolidated Balance Sheets at their fair value unless CenterPoint Energy elects the normal purchase and sales exemption for qualified physical transactions. A derivative may be designated as a normal purchase or sale if the intent is to physically receive or deliver the product for use or sale in the normal course of business. CenterPoint Energy has a Risk Oversight Committee composed of corporate and business segment officers that oversees all commodity price, weather and credit risk activities, including CenterPoint Energy’s marketing, risk management services and hedging activities. The committee’s duties are to establish CenterPoint Energy’s commodity risk policies, allocate board-approved commercial risk limits, approve the use of new products and commodities, monitor positions and ensure compliance with CenterPoint Energy’s risk management policies, procedures and limits established by CenterPoint Energy’s board of directors. CenterPoint Energy’s policies prohibit the use of leveraged financial instruments. A leveraged financial instrument, for this purpose, is a transaction involving a derivative whose financial impact will be based on an amount other than the notional amount or volume of the instrument.
Derivative Instruments. CenterPoint Energy enters into certain derivative instruments to manage physical commodity price risk and does not engage in proprietary or speculative commodity trading. These financial instruments do not qualify or are not designated as cash flow or fair value hedges. Weather Hedges. CenterPoint Energy has weather normalization or other rate mechanisms that mitigate the impact of weather on its gas operations in Arkansas, Louisiana, Mississippi and Oklahoma. Gas operations in Texas and Minnesota and electric operations in Texas do not have such mechanisms. As a result, fluctuations from normal weather may have a significant positive or negative effect on Gas Operations’ results in these jurisdictions and on CenterPoint Houston’s results in its service territory. CenterPoint Energy entered into heating-degree day swaps for certain Gas Operations jurisdictions to mitigate the effect of fluctuations from normal weather on its results of operations and cash flows for the winter heating season, which contained a bilateral dollar cap of $15 million in 2012 - 2013 and $16 million in 2013 - 2014. In 2013, CenterPoint Energy also entered into a similar winter weather hedge for the CenterPoint Houston service territory, which contained a bilateral dollar cap of $8 million. The swaps are based on ten-year normal weather. During the three months ended June 30, 2014 and 2013, CenterPoint Energy recognized losses of $-0- and $3 million, respectively, related to these swaps. During the six months ended June 30, 2014 and 2013, CenterPoint Energy recognized losses of $8 million and $6 million, respectively, related to these swaps. Weather hedge gains and losses are included in revenues in the Condensed Statements of Consolidated Income.
The following tables present information about CenterPoint Energy’s derivative instruments and hedging activities. The first four tables provide a balance sheet overview of CenterPoint Energy’s Derivative Assets and Liabilities as of June 30, 2014 and December 31, 2013, while the last two tables provide a breakdown of the related income statement impacts for the three and six months ended June 30, 2014 and 2013.
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Realized and unrealized gains and losses on derivatives are recognized in the Condensed Statements of Consolidated Income as revenue for physical natural gas sales derivative contracts and as natural gas expense for financial natural gas derivatives and other physical natural gas derivatives. Unrealized gains and losses on indexed debt securities are recorded as Other Income (Expense) in the Condensed Statements of Consolidated Income.
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CenterPoint Energy enters into financial derivative contracts containing material adverse change provisions. These provisions could require CenterPoint Energy to post additional collateral if the Standard & Poor’s Ratings Services or Moody’s Investors Service, Inc. credit ratings of CenterPoint Energy, Inc. or its subsidiaries are downgraded. The total fair value of the derivative instruments that contain credit risk contingent features that are in a net liability position at both June 30, 2014 and December 31, 2013 was $1 million. The aggregate fair value of assets that were posted as collateral was less than $1 million at both June 30, 2014 and December 31, 2013. If all derivative contracts (in a net liability position) containing credit risk contingent features were triggered at June 30, 2014 and December 31, 2013, less than $1 million and $1 million, respectively, of additional assets would be required to be posted as collateral. |
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- Definition
The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair Value Measurements
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Jun. 30, 2014
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Disclosures [Text Block] | Fair Value Measurements Assets and liabilities that are recorded at fair value in the Condensed Consolidated Balance Sheets are categorized based upon the level of judgment associated with the inputs used to measure their value. Hierarchical levels, as defined below and directly related to the amount of subjectivity associated with the inputs to fair valuations of these assets and liabilities, are as follows: Level 1: Inputs are unadjusted quoted prices in active markets for identical assets or liabilities at the measurement date. The types of assets carried at Level 1 fair value generally are exchange-traded derivatives and equity securities. Level 2: Inputs, other than quoted prices included in Level 1, are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar instruments in active markets, and inputs other than quoted prices that are observable for the asset or liability. Fair value assets and liabilities that are generally included in this category are derivatives with fair values based on inputs from actively quoted markets. A market approach is utilized to value CenterPoint Energy’s Level 2 assets or liabilities. Level 3: Inputs are unobservable for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. Unobservable inputs reflect CenterPoint Energy’s judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. CenterPoint Energy develops these inputs based on the best information available, including CenterPoint Energy’s own data. A market approach is utilized to value CenterPoint Energy’s Level 3 assets or liabilities. Currently, CenterPoint Energy’s Level 3 assets and liabilities are comprised of physical forward contracts and options. Level 3 physical forward contracts are valued using a discounted cash flow model which includes illiquid forward price curve locations (ranging from $2.62 to $4.98 per one million British thermal units) as an unobservable input. Level 3 options are valued through Black-Scholes (including forward start) option models which include option volatilities (ranging from 0 to 62%) as an unobservable input. CenterPoint Energy’s Level 3 derivative assets and liabilities consist of both long and short positions (forwards and options) and their fair value is sensitive to forward prices and volatilities. If forward prices decrease, CenterPoint Energy’s long forwards lose value whereas its short forwards gain in value. If volatility decreases, CenterPoint Energy’s long options lose value whereas its short options gain in value. CenterPoint Energy determines the appropriate level for each financial asset and liability on a quarterly basis and recognizes transfers between levels at the end of the reporting period. For the six months ended June 30, 2014, there were no transfers between Level 1 and 2. CenterPoint Energy also recognizes purchases of Level 3 financial assets and liabilities at their fair market value at the end of the reporting period. The following tables present information about CenterPoint Energy’s assets and liabilities (including derivatives that are presented net) measured at fair value on a recurring basis as of June 30, 2014 and December 31, 2013, and indicate the fair value hierarchy of the valuation techniques utilized by CenterPoint Energy to determine such fair value.
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The following table presents additional information about assets or liabilities, including derivatives that are measured at fair value on a recurring basis for which CenterPoint Energy has utilized Level 3 inputs to determine fair value:
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Estimated Fair Value of Financial Instruments The fair values of cash and cash equivalents, investments in debt and equity securities classified as “trading” and short-term borrowings are estimated to be approximately equivalent to carrying amounts and have been excluded from the table below. The carrying amounts of non-trading derivative assets and liabilities and CenterPoint Energy’s 2.0% Zero-Premium Exchangeable Subordinated Notes due 2029 (ZENS) indexed debt securities derivative are stated at fair value and are excluded from the table below. The fair value of each debt instrument is determined by multiplying the principal amount of each debt instrument by the market price. These assets and liabilities, which are not measured at fair value in the Condensed Consolidated Balance Sheets but for which the fair value is disclosed, would be classified as Level 1 or Level 2 in the fair value hierarchy.
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- Definition
The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Unconsolidated Affiliates (Notes)
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Jun. 30, 2014
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| Equity Method Investments and Joint Ventures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investments and Joint Ventures Disclosure [Text Block] | Unconsolidated Affiliates On May 1, 2013 (the Closing Date) CERC Corp., OGE Energy Corp. (OGE) and ArcLight Capital Partners, LLC (ArcLight) closed on the formation of Enable. CenterPoint Energy has the ability to significantly influence the operating and financial policies of Enable and, accordingly, accounts for its investment in Enable using the equity method of accounting. Under the equity method, CenterPoint Energy will adjust its investment in Enable each period for contributions made, distributions received, CenterPoint Energy’s share of Enable’s comprehensive income and accretion of differences, as appropriate. CenterPoint Energy evaluates its equity method investments for impairment when events or changes in circumstances indicate there is a loss in value of the investment that is other than a temporary decline. CenterPoint Energy’s investment in Enable is considered to be a VIE because the power to direct the activities that most significantly impact Enable’s economic performance does not reside with the holders of equity investment at risk. However, CenterPoint Energy is not considered the primary beneficiary of Enable since it does not have the power to direct the activities of Enable that are considered most significant to the economic performance of Enable. CenterPoint Energy’s maximum exposure to loss related to Enable is limited to its equity investment as presented in the Condensed Consolidated Balance Sheet at June 30, 2014, CERC Corp.’s guarantee of collection of Enable’s $1.1 billion senior notes due 2019 and 2024 (Guaranteed Senior Notes) and other guarantees discussed in Note 12, CERC Corp.’s $363 million notes receivable from Enable and outstanding current accounts receivable from Enable. CERC Corp.’s guarantee of Enable’s Guaranteed Senior Notes is subordinated to all senior debt of CERC and is subject to automatic release on May 1, 2016. The $363 million of notes receivable from Enable bears interest at an annual rate of 2.10% to 2.45% and matures in 2017. CenterPoint Energy recorded interest income of $2 million and $1 million during the three months ended June 30, 2014 and 2013, respectively, and $4 million and $1 million during the six months ended June 30, 2014 and 2013, respectively, for interest earned on or after the Closing Date and had interest receivable from Enable of $5 million and $4 million as of June 30, 2014 and December 31, 2013, respectively, on its notes receivable from Enable. Effective on the Closing Date, CenterPoint Energy and Enable entered into a Services Agreement, Employee Transition Agreement, Transitional Services Agreement and other agreements (collectively, Transition Agreements) whereby CenterPoint Energy agreed to provide certain support services to Enable such as accounting, legal, risk management and treasury functions for an initial term ending on April 30, 2016. The support services automatically extend year-to-year at the end of the initial term, unless terminated by Enable with at least 90 days’ notice. Enable may terminate the initial support services at any time with 180 days’ notice if approved by the board of Enable's general partner. Additionally, CenterPoint Energy agreed to provide seconded employees to Enable to support its operations for an initial term ending on December 31, 2014, unless revised by mutual agreement with CenterPoint Energy, OGE and Enable prior to that date. CenterPoint Energy billed Enable for reimbursement of transitional services, including the costs of seconded employees, $37 million and $28 million during the three months ended June 30, 2014 and 2013, respectively, and $82 million and $28 million during the six months ended June 30, 2014 and 2013, respectively, under the Transition Agreements for transition services incurred on or after the Closing Date. Actual transitional services costs are recorded net of reimbursements received from Enable. Effective April 1, 2014, Enable’s general partner, CenterPoint Energy and OGE agreed to reduce certain governance related costs billed to Enable for transition services. CenterPoint Energy had accounts receivable from Enable of $20 million and $21 million as of June 30, 2014 and December 31, 2013, respectively, for amounts billed for transitional services, including the cost of seconded employees. Enable, at its discretion, has the right to select and offer employment to seconded employees from CenterPoint Energy. CenterPoint Energy did not transfer any employees to Enable at formation of the partnership or at any time during the period from the Closing Date through June 30, 2014. As of June 30, 2014, CenterPoint Energy determined it cannot reasonably estimate the impact of the costs associated with the termination of employees related to the formation of Enable or transfer of employees from CenterPoint Energy to Enable, including the impact of the changes to the actuarial determination of employee benefit plan obligations. Pursuant to the Transition Agreements, Enable has agreed to reimburse CenterPoint Energy for severance and termination costs related to the termination of CenterPoint Energy's seconded employees, regardless of whether such seconded employees are offered employment by Enable. On April 16, 2014, Enable completed its initial public offering (IPO) of 28,750,000 common units, at a price of $20.00 per unit, which included 3,750,000 common units sold by ArcLight pursuant to an over-allotment option that was fully exercised by the underwriters. Enable received $464 million in net proceeds from the sale of the units, after deducting underwriting fees, structuring fees and other offering costs. In connection with Enable’s IPO, a portion of CenterPoint Energy’s common units were converted into subordinated units, as discussed further below. Subsequent to the IPO, Enable continues to be equally controlled by CenterPoint Energy and OGE; each own 50% of the management rights in the general partner of Enable. CenterPoint Energy and OGE also own a 40% and 60% economic interest, respectively, in the incentive distribution rights held by the general partner of Enable. As a result of Enable’s IPO, CenterPoint Energy’s limited partner interest in Enable was reduced from approximately 58.3% to approximately 54.7%. CenterPoint Energy accounted for the dilution of its investment in Enable as a result of Enable’s IPO as a failed partial sale of in-substance real estate. CenterPoint Energy did not receive any cash from Enable’s IPO and, as such, CenterPoint Energy did not recognize a gain or loss. CenterPoint Energy’s basis difference in Enable was reduced for the impact of the Enable IPO. In accordance with the Enable formation agreements, CenterPoint Energy had certain put rights, and Enable had certain call rights, exercisable with respect to the 25.05% interest in Southeast Supply Header, LLC (SESH) retained by CenterPoint Energy on the Closing Date, under which CenterPoint Energy would contribute its retained interest in SESH, in exchange for a specified number of limited partner units in Enable and a cash payment, payable either from CenterPoint Energy to Enable or from Enable to CenterPoint Energy, to the extent of changes in the value of SESH subject to certain restrictions. Specifically, the rights were and are exercisable with respect to (1) a 24.95% interest in SESH (24.95% Put), which closed on May 30, 2014 as discussed below and (2) a 0.1% interest in SESH, which may be exercised no earlier than June 2015 for 25,341 common units in Enable. On May 30, 2014, CenterPoint Energy closed its 24.95% Put and contributed to Enable its 24.95% interest in SESH in exchange for 6,322,457 common units of Enable, which increased CenterPoint Energy’s limited partner interest in Enable from approximately 54.7% to approximately 55.4%. No cash payment was required to be made pursuant to the Enable formation agreements in connection with CenterPoint Energy’s exercise of the 24.95% Put. CenterPoint Energy accounted for the contribution of its 24.95% interest in SESH to Enable in exchange for common units of Enable as a non-monetary transaction of in-substance real estate equity method investments. As such, CenterPoint Energy recorded the 6,322,457 common units at the historical cost of the contributed 24.95% interest in SESH of $198 million and recorded no gain or loss in connection with its exercise of the 24.95% Put. As a result, CenterPoint Energy’s basis difference in Enable was reduced for the impact of its exercise of the 24.95% Put. CenterPoint Energy incurred natural gas expenses, including transportation and storage costs, of $27 million and $28 million, during the three months ended June 30, 2014 and 2013, respectively, and $75 million and $28 million during the six months ended June 30, 2014 and 2013, respectively, for transactions with Enable occurring on or after the Closing Date. CenterPoint Energy had accounts payable to Enable of $15 million and $22 million at June 30, 2014 and December 31, 2013, respectively, from such transactions. As of June 30, 2014, CenterPoint Energy held an approximate 55.4% limited partner interest in Enable consisting of 94,126,366 common units and 139,704,916 subordinated units and a 0.1% interest in SESH. The principal difference between Enable common units and subordinated units is that in any quarter during the subordination period, holders of the subordinated units are not entitled to receive any distribution of available cash until the common units have received the minimum quarterly distribution plus any arrearages in the payment of the minimum quarterly distribution from prior quarters. If Enable does not pay distributions on its subordinated units, the subordinated units will not accrue arrearages for those unpaid distributions. At the end of the subordination period, CenterPoint Energy’s subordinated units in Enable will be converted to common units in Enable on a one-for-one basis. On June 30, 2014, Enable’s common units closed at $26.19 per unit on the New York Stock Exchange. Investment in Unconsolidated Affiliates:
Equity in Earnings of Unconsolidated Affiliates, net:
Summarized unaudited consolidated income information for Enable is as follows:
Enable concluded that its formation was considered a business combination, in which the fair value of the consideration paid for Enogex, LLC (Enogex), the businesses contributed by OGE, was allocated to the assets acquired and liabilities assumed by Enable on the Closing Date. In the third quarter of 2013, Enable completed its valuation of Enogex, and Enogex's assets, liabilities and equity, and the related depreciation and amortization for the two-month period ended June 30, 2013, was accordingly adjusted to estimated fair value as of the Closing Date. CenterPoint Energy’s equity in earnings, net of basis difference, in the second quarter of 2013 was not materially different as a result of the final fair value determination. Summarized unaudited consolidated balance sheet information for Enable is as follows:
Cash distributions received from Enable and SESH were approximately $90 million and $4 million, respectively, during the three months ended June 30, 2014 and were $-0- and $8 million, respectively, during the three months ended June 30, 2013. Cash distributions received from Enable and SESH were approximately $157 million and $7 million, respectively, during the six months ended June 30, 2014 and were $-0- and $17 million, respectively, during the six months ended June 30, 2013. |
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The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Goodwill
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Jun. 30, 2014
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| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Text Block] | Goodwill Goodwill by reportable business segment as of both June 30, 2014 and December 31, 2013 is as follows (in millions):
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The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Capital Stock
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Jun. 30, 2014
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| Class of Stock Disclosures [Abstract] | |
| Capital Stock | Capital Stock CenterPoint Energy, Inc. has 1,020,000,000 authorized shares of capital stock, comprised of 1,000,000,000 shares of $0.01 par value common stock and 20,000,000 shares of $0.01 par value preferred stock. At June 30, 2014, 429,795,996 shares of CenterPoint Energy, Inc. common stock were issued and 429,795,830 shares were outstanding. At December 31, 2013, 428,798,612 shares of CenterPoint Energy, Inc. common stock were issued and 428,798,446 shares were outstanding. Outstanding common shares exclude 166 treasury shares at both June 30, 2014 and December 31, 2013. |
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The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Short-Term Borrowings and Long-term Debt
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Jun. 30, 2014
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| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Short-term Borrowings and Long-term Debt [Text Block] | Short-term Borrowings and Long-term Debt
Inventory Financing. Gas Operations has asset management agreements associated with its utility distribution service in Arkansas, north Louisiana and Oklahoma that extend through 2015. Pursuant to the provisions of the agreements, Gas Operations sells natural gas and agrees to repurchase an equivalent amount of natural gas during the winter heating seasons at the same cost, plus a financing charge. These transactions are accounted for as a financing and had an associated principal obligation of $42 million and $43 million as of June 30, 2014 and December 31, 2013, respectively.
On March 17, 2014, CenterPoint Energy Houston Electric, LLC issued $600 million principal amount of 4.50% General Mortgage Bonds due 2044. Debt Repayments. Approximately $44 million aggregate principal amount of pollution control bonds issued on behalf of CenterPoint Houston were redeemed on March 3, 2014 at 101% of their principal amount plus accrued interest. The bonds had an interest rate of 4.25%, were scheduled to mature in 2017 and were collateralized by general mortgage bonds of CenterPoint Houston. Approximately $56 million aggregate principal amount of pollution control bonds issued on behalf of CenterPoint Houston were purchased by CenterPoint Houston on March 3, 2014 at 101% of their principal amount plus accrued interest pursuant to the mandatory tender provisions of the bonds. The bonds had an interest rate of 5.60% prior to CenterPoint Houston's purchase and have a variable rate thereafter. The bonds mature in 2027 and are collateralized by general mortgage bonds of CenterPoint Houston. The purchased pollution control bonds may be remarketed. Approximately $84 million aggregate principal amount of pollution control bonds issued on behalf of CenterPoint Houston were redeemed on June 2, 2014 at 100% of their principal amount plus accrued interest. The bonds had an interest rate of 4.25%, were scheduled to mature in 2017 and were collateralized by general mortgage bonds of CenterPoint Houston. Credit Facilities. As of June 30, 2014 and December 31, 2013, CenterPoint Energy, CenterPoint Houston and CERC Corp. had the following revolving credit facilities and utilization of such facilities (in millions):
CenterPoint Energy’s $1.2 billion revolving credit facility, which is scheduled to terminate on September 9, 2018, can be drawn at the London Interbank Offered Rate (LIBOR) plus 125 basis points based on CenterPoint Energy’s current credit ratings. The revolving credit facility contains a financial covenant which limits CenterPoint Energy’s consolidated debt (excluding transition and system restoration bonds) to an amount not to exceed 65% of CenterPoint Energy’s consolidated capitalization. The financial covenant limit will temporarily increase from 65% to 70% if CenterPoint Houston experiences damage from a natural disaster in its service territory and CenterPoint Energy certifies to the administrative agent that CenterPoint Houston has incurred system restoration costs reasonably likely to exceed $100 million in a consecutive twelve-month period, all or part of which CenterPoint Houston intends to seek to recover through securitization financing. Such temporary increase in the financial covenant would be in effect from the date CenterPoint Energy delivers its certification until the earliest to occur of (i) the completion of the securitization financing, (ii) the first anniversary of CenterPoint Energy’s certification or (iii) the revocation of such certification. CenterPoint Houston’s $300 million revolving credit facility, which is scheduled to terminate on September 9, 2018, can be drawn at LIBOR plus 112.5 basis points based on CenterPoint Houston’s current credit ratings. The revolving credit facility contains a financial covenant which limits CenterPoint Houston’s consolidated debt (excluding transition and system restoration bonds) to an amount not to exceed 65% of CenterPoint Houston's consolidated capitalization. CERC Corp.’s $600 million revolving credit facility, which is scheduled to terminate on September 9, 2018, can be drawn at LIBOR plus 150 basis points based on CERC Corp.’s current credit ratings. The revolving credit facility contains a financial covenant which limits CERC’s consolidated debt to an amount not to exceed 65% of CERC’s consolidated capitalization. CenterPoint Energy, CenterPoint Houston and CERC Corp. were in compliance with all financial covenants in their respective revolving credit facilities as of June 30, 2014. |
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- Definition
The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Income Taxes
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6 Months Ended |
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Jun. 30, 2014
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| Income Tax Disclosure [Abstract] | |
| Income Taxes | Income Taxes The effective tax rate reported for both the three and six months ended June 30, 2014 was 37%, compared to 169% and 88%, respectively, for the same periods in 2013. The higher effective rate for the three and six months ended June 30, 2013 was primarily associated with the formation of Enable. As a result of the formation of Enable, a deferred tax liability of $225 million was recorded for the book-to-tax basis difference in CenterPoint Energy’s investment resulting from the goodwill that was contributed by CenterPoint Energy. In addition, CenterPoint Energy recognized a tax benefit of $29 million associated with the remeasurement of state deferred taxes related to Enable's formation. CenterPoint Energy reported no uncertain tax liability as of June 30, 2014 and expects no significant change to the uncertain tax liability over the next twelve months ending June 30, 2015. The consolidated federal income tax return filed for the year ended December 31, 2012 is currently under audit by the Internal Revenue Service, and all other consolidated federal income tax returns have been audited and settled through tax year 2011. |
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- Definition
The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commitments and Contingencies
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Jun. 30, 2014
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| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||
| Commitments and Contingencies | Commitments and Contingencies
Natural gas supply commitments include natural gas contracts related to CenterPoint Energy’s Natural Gas Distribution and Energy Services business segments, which have various quantity requirements and durations, that are not classified as non-trading derivative assets and liabilities in CenterPoint Energy’s Consolidated Balance Sheets as of June 30, 2014 and December 31, 2013 as these contracts meet an exception as “normal purchases contracts” or do not meet the definition of a derivative. Natural gas supply commitments also include natural gas transportation contracts that do not meet the definition of a derivative. As of June 30, 2014, minimum payment obligations for natural gas supply commitments are approximately $259 million for the remaining six months in 2014, $528 million in 2015, $454 million in 2016, $384 million in 2017, $376 million in 2018 and $174 million after 2018.
Legal Matters Gas Market Manipulation Cases. CenterPoint Energy, CenterPoint Houston or their predecessor, Reliant Energy, Incorporated (Reliant Energy), and certain of their former subsidiaries have been named as defendants in certain lawsuits described below. Under a master separation agreement between CenterPoint Energy and a former subsidiary, Reliant Resources, Inc. (RRI), CenterPoint Energy and its subsidiaries are entitled to be indemnified by RRI and its successors for any losses, including certain attorneys’ fees and other costs, arising out of these lawsuits. In May 2009, RRI sold its Texas retail business to a subsidiary of NRG and RRI changed its name to RRI Energy, Inc. In December 2010, Mirant Corporation merged with and became a wholly owned subsidiary of RRI, and RRI changed its name to GenOn Energy, Inc. (GenOn). In December 2012, NRG acquired GenOn through a merger in which GenOn became a wholly owned subsidiary of NRG. None of the sale of the retail business, the merger with Mirant Corporation, or the acquisition of GenOn by NRG alters RRI’s (now GenOn’s) contractual obligations to indemnify CenterPoint Energy and its subsidiaries, including CenterPoint Houston, for certain liabilities, including their indemnification obligations regarding the gas market manipulation litigation, nor does it affect the terms of existing guarantee arrangements for certain GenOn gas transportation contracts discussed below. A large number of lawsuits were filed against numerous gas market participants in a number of federal and western state courts in connection with the operation of the natural gas markets in 2000-2002. CenterPoint Energy and its affiliates have since been released or dismissed from all but one such case. CenterPoint Energy Services, Inc. (CES), a subsidiary of CERC Corp., is a defendant in a case now pending in federal court in Nevada alleging a conspiracy to inflate Wisconsin natural gas prices in 2000-2002. In July 2011, the court issued an order dismissing the plaintiffs’ claims against other defendants in the case, each of whom had demonstrated Federal Energy Regulatory Commission jurisdictional sales for resale during the relevant period, based on federal preemption. The plaintiffs appealed this ruling to the United States Court of Appeals for the Ninth Circuit, which reversed the trial court's dismissal of the plaintiffs' claims. In August 2013, the other defendants filed a petition for review with the U.S. Supreme Court, which the court granted on July 1, 2014. CenterPoint Energy believes that CES is not a proper defendant in this case and will continue to pursue a dismissal. CenterPoint Energy does not expect the ultimate outcome of this matter to have a material impact on its financial condition, results of operations or cash flows. Environmental Matters Manufactured Gas Plant Sites. CERC and its predecessors operated manufactured gas plants (MGPs) in the past. There are seven MGP sites in CERC’s Minnesota service territory. CERC believes it never owned or operated, and therefore has no liability with respect to, two of these sites. With respect to two other sites, CERC has completed state ordered remediation, other than ongoing monitoring and water treatment. At June 30, 2014, CERC had recorded a liability of $13 million for remediation of these Minnesota sites. The estimated range of possible remediation costs for the sites for which CERC believes it may have responsibility was $6 million to $41 million based on remediation continuing for 30 to 50 years. The cost estimates are based on studies of a site or industry average costs for remediation of sites of similar size. The actual remediation costs will be dependent upon the number of sites to be remediated, the participation of other potentially responsible parties (PRPs), if any, and the remediation methods used. The Minnesota Public Utilities Commission includes approximately $285,000 annually in rates to fund normal ongoing remediation costs. As of June 30, 2014, CERC had collected $6 million from insurance companies to be used for future environmental remediation. In addition to the Minnesota sites, the United States Environmental Protection Agency and other regulators have investigated MGP sites that were owned or operated by CERC or may have been owned by one of its former affiliates. CERC and CenterPoint Energy do not expect the ultimate outcome of these investigations will have a material adverse impact on the financial condition, results of operations or cash flows of either CenterPoint Energy or CERC. Asbestos. Some facilities owned by CenterPoint Energy contain or have contained asbestos insulation and other asbestos-containing materials. CenterPoint Energy or its subsidiaries have been named, along with numerous others, as a defendant in lawsuits filed by a number of individuals who claim injury due to exposure to asbestos. Some of the claimants have worked at locations owned by subsidiaries of CenterPoint Energy, but most existing claims relate to facilities previously owned by CenterPoint Energy’s subsidiaries, some of which are currently owned by an affiliate of NRG. CenterPoint Energy anticipates that additional claims like those received may be asserted in the future. In 2004 and early 2005, CenterPoint Energy sold its generating business, to which most of these claims relate, to a company which is now an affiliate of NRG. Under the terms of the arrangements regarding separation of the generating business from CenterPoint Energy and its sale of that business, ultimate financial responsibility for uninsured losses from claims relating to the generating business has been assumed by the NRG affiliate, but CenterPoint Energy has agreed to continue to defend such claims to the extent they are covered by insurance maintained by CenterPoint Energy, subject to reimbursement of the costs of such defense by the NRG affiliate. Although their ultimate outcome cannot be predicted at this time, CenterPoint Energy intends to continue vigorously contesting claims that it does not consider to have merit and, based on its experience to date, does not expect these matters, either individually or in the aggregate, to have a material adverse effect on CenterPoint Energy’s financial condition, results of operations or cash flows. Other Environmental. From time to time CenterPoint Energy identifies the presence of environmental contaminants on property where its subsidiaries conduct or have conducted operations. Other such sites involving contaminants may be identified in the future. CenterPoint Energy has and expects to continue to remediate identified sites consistent with its legal obligations. From time to time CenterPoint Energy has received notices from regulatory authorities or others regarding its status as a PRP in connection with sites found to require remediation due to the presence of environmental contaminants. In addition, CenterPoint Energy has been named from time to time as a defendant in litigation related to such sites. Although the ultimate outcome of such matters cannot be predicted at this time, CenterPoint Energy does not expect, based on its experience to date, these matters, either individually or in the aggregate, to have a material adverse effect on CenterPoint Energy’s financial condition, results of operations or cash flows. Other Proceedings CenterPoint Energy is involved in other legal, environmental, tax and regulatory proceedings before various courts, regulatory commissions and governmental agencies regarding matters arising in the ordinary course of business. From time to time, CenterPoint Energy is also a defendant in legal proceedings with respect to claims brought by various plaintiffs against broad groups of participants in the energy industry. Some of these proceedings involve substantial amounts. CenterPoint Energy regularly analyzes current information and, as necessary, provides accruals for probable liabilities on the eventual disposition of these matters. CenterPoint Energy does not expect the disposition of these matters to have a material adverse effect on CenterPoint Energy’s financial condition, results of operations or cash flows.
Prior to the distribution of CenterPoint Energy’s ownership in RRI to its shareholders, CERC had guaranteed certain contractual obligations of what became RRI’s trading subsidiary. When the companies separated, RRI agreed to secure CERC against obligations under the guarantees RRI had been unable to extinguish by the time of separation. Pursuant to such agreement, as amended in December 2007, RRI (now GenOn) agreed to provide to CERC cash or letters of credit as security against CERC’s obligations under its remaining guarantees for demand charges under certain gas transportation agreements if and to the extent changes in market conditions expose CERC to a risk of loss on those guarantees based on an annual calculation, with any required collateral to be posted each December. The undiscounted maximum potential payout of the demand charges under these transportation contracts, which will be in effect until 2018, was approximately $51 million as of June 30, 2014. Based on market conditions in the fourth quarter of 2013 at the time the most recent annual calculation was made under the agreement, GenOn was not obligated to post any security. If GenOn should fail to perform the contractual obligations, CERC could have to honor its guarantee and, in such event, any collateral then provided as security may be insufficient to satisfy CERC’s obligations. CenterPoint Energy has provided guarantees (CenterPoint Midstream Guarantees) with respect to the performance of certain obligations of Enable under long-term gas gathering and treating agreements with an indirect wholly owned subsidiary of Encana Corporation and an indirect wholly owned subsidiary of Royal Dutch Shell plc. As of June 30, 2014, CenterPoint Energy had guaranteed Enable's obligations up to an aggregate amount of $100 million under these agreements. Under the terms of the omnibus agreement entered into in connection with the closing of the formation of Enable, Enable and CenterPoint Energy have agreed to use commercially reasonable efforts and cooperate with each other to terminate the CenterPoint Midstream Guarantees and to release CenterPoint Energy from such guarantees by causing Enable or one of its subsidiaries to enter into substitute guarantees or to assume the CenterPoint Midstream Guarantees as applicable. CERC Corp. has also provided a guarantee of collection of $1.1 billion of Enable's Guaranteed Senior Notes. This guarantee is subordinated to all senior debt of CERC Corp. and is subject to automatic release on May 1, 2016. As of June 30, 2014, no amounts had been recorded in the Condensed Consolidated Balance Sheets related to these guarantees. |
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- Definition
The entire disclosure for commitments and contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Earnings Per Share
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Jun. 30, 2014
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| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share | Earnings Per Share The following table reconciles numerators and denominators of CenterPoint Energy’s basic and diluted earnings (loss) per share calculations:
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The entire disclosure for earnings per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reportable Business Segments
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Jun. 30, 2014
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reportable Business Segments | Reportable Business Segments CenterPoint Energy’s determination of reportable business segments considers the strategic operating units under which CenterPoint Energy manages sales, allocates resources and assesses performance of various products and services to wholesale or retail customers in differing regulatory environments. CenterPoint Energy uses operating income as the measure of profit or loss for its business segments. CenterPoint Energy’s reportable business segments include the following: Electric Transmission & Distribution, Natural Gas Distribution, Energy Services, Midstream Investments and Other Operations. The electric transmission and distribution function (CenterPoint Houston) is reported in the Electric Transmission & Distribution business segment. Natural Gas Distribution consists of intrastate natural gas sales to, and natural gas transportation and distribution for, residential, commercial, industrial and institutional customers. Energy Services represents CenterPoint Energy’s non-rate regulated gas sales and services operations. Midstream Investments consists primarily of CenterPoint Energy’s investment in Enable and its retained interest in SESH. Other Operations consists primarily of other corporate operations which support all of CenterPoint Energy’s business operations. Prior to May 1, 2013, CenterPoint Energy also reported an Interstate Pipelines business segment, which included CenterPoint Energy’s interstate natural gas pipeline operations, and a Field Services business segment, which included CenterPoint Energy’s non-rate regulated natural gas gathering, processing and treating operations. The formation of Enable closed on May 1, 2013. Enable now owns substantially all of CenterPoint Energy’s former Interstate Pipelines and Field Services business segments, except for a 0.1% interest in SESH. As a result, effective May 1, 2013, CenterPoint Energy reports equity earnings associated with its interest in Enable and equity earnings associated with its interest in SESH under a new Midstream Investments segment, and no longer has Interstate Pipelines and Field Services reporting segments prospectively. Financial data for business segments is as follows (in millions):
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- Definition
The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Subsequent Events
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6 Months Ended |
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Jun. 30, 2014
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| Subsequent Events [Abstract] | |
| Subsequent Events [Text Block] | Subsequent Events On July 24, 2014, CenterPoint Energy’s board of directors declared a regular quarterly cash dividend of $0.2375 per share of common stock payable on September 10, 2014, to shareholders of record as of the close of business on August 15, 2014. |
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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. No definition available.
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Employee Benefit Plans (Tables)
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Jun. 30, 2014
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| Compensation and Retirement Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Defined Benefit Plans Disclosures [Table Text Block] | CenterPoint Energy’s net periodic cost includes the following components relating to pension and postretirement benefits:
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CenterPoint Energy's changes in accumulated comprehensive loss related to defined benefit and postretirement plans are as follows:
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- Definition
Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Derivative Instruments (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2014
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| Derivative Instruments and Hedging Activities Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value of Derivative Instruments Table | The following tables present information about CenterPoint Energy’s derivative instruments and hedging activities. The first four tables provide a balance sheet overview of CenterPoint Energy’s Derivative Assets and Liabilities as of June 30, 2014 and December 31, 2013, while the last two tables provide a breakdown of the related income statement impacts for the three and six months ended June 30, 2014 and 2013.
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| Income Statement Impact of Derivative Activity Table | Realized and unrealized gains and losses on derivatives are recognized in the Condensed Statements of Consolidated Income as revenue for physical natural gas sales derivative contracts and as natural gas expense for financial natural gas derivatives and other physical natural gas derivatives. Unrealized gains and losses on indexed debt securities are recorded as Other Income (Expense) in the Condensed Statements of Consolidated Income.
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- Definition
Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair Value Measurements (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2014
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair value, assets measured on a recurring basis | The following tables present information about CenterPoint Energy’s assets and liabilities (including derivatives that are presented net) measured at fair value on a recurring basis as of June 30, 2014 and December 31, 2013, and indicate the fair value hierarchy of the valuation techniques utilized by CenterPoint Energy to determine such fair value.
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| Assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs | The following table presents additional information about assets or liabilities, including derivatives that are measured at fair value on a recurring basis for which CenterPoint Energy has utilized Level 3 inputs to determine fair value:
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| Estimated fair value of financial instruments, debt instruments | Estimated Fair Value of Financial Instruments The fair values of cash and cash equivalents, investments in debt and equity securities classified as “trading” and short-term borrowings are estimated to be approximately equivalent to carrying amounts and have been excluded from the table below. The carrying amounts of non-trading derivative assets and liabilities and CenterPoint Energy’s 2.0% Zero-Premium Exchangeable Subordinated Notes due 2029 (ZENS) indexed debt securities derivative are stated at fair value and are excluded from the table below. The fair value of each debt instrument is determined by multiplying the principal amount of each debt instrument by the market price. These assets and liabilities, which are not measured at fair value in the Condensed Consolidated Balance Sheets but for which the fair value is disclosed, would be classified as Level 1 or Level 2 in the fair value hierarchy.
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- Definition
Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Unconsolidated Affiliates (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2014
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| Equity Method Investments and Joint Ventures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investments [Table Text Block] | Investment in Unconsolidated Affiliates:
Equity in Earnings of Unconsolidated Affiliates, net:
Summarized unaudited consolidated income information for Enable is as follows:
Enable concluded that its formation was considered a business combination, in which the fair value of the consideration paid for Enogex, LLC (Enogex), the businesses contributed by OGE, was allocated to the assets acquired and liabilities assumed by Enable on the Closing Date. In the third quarter of 2013, Enable completed its valuation of Enogex, and Enogex's assets, liabilities and equity, and the related depreciation and amortization for the two-month period ended June 30, 2013, was accordingly adjusted to estimated fair value as of the Closing Date. CenterPoint Energy’s equity in earnings, net of basis difference, in the second quarter of 2013 was not materially different as a result of the final fair value determination. Summarized unaudited consolidated balance sheet information for Enable is as follows:
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- Definition
Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Goodwill (Tables)
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Jun. 30, 2014
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| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||
| Schedule of Goodwill [Table Text Block] | Goodwill by reportable business segment as of both June 30, 2014 and December 31, 2013 is as follows (in millions):
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- Definition
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Short-Term Borrowings and Long-term Debt Credit Facilities (Tables)
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Jun. 30, 2014
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| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Line of Credit Facilities [Table Text Block] | Credit Facilities. As of June 30, 2014 and December 31, 2013, CenterPoint Energy, CenterPoint Houston and CERC Corp. had the following revolving credit facilities and utilization of such facilities (in millions):
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- Definition
Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Earnings Per Share (Tables)
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Jun. 30, 2014
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| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following table reconciles numerators and denominators of CenterPoint Energy’s basic and diluted earnings (loss) per share calculations:
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- Definition
Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reportable Business Segments (Tables)
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Jun. 30, 2014
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Segment Reporting Information, by Segment [Table Text Block] | Financial data for business segments is as follows (in millions):
________________
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- Definition
Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Background and Basis of Presentation (Details)
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Jun. 30, 2014
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Apr. 16, 2014
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Mar. 31, 2014
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| Number Of Vies Consolidated In Financial Statements | 4 | ||
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CERC Corp [Member] | Midstream Partnership [Member]
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| Equity Method Investment, Ownership Percentage | 55.40% | 54.70% | 58.30% |
| X | ||||||||||
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- Definition
The number of variable interest entities (VIE's) consolidated in the financials. No definition available.
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| X | ||||||||||
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- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Before tax amount of the income statement impact of the reclassification adjustment recognized as a component of net periodic benefit cost No definition available.
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| X | ||||||||||
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- Definition
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Actuarial gains, Recognized in Net Periodic Benefit Cost, before tax No definition available.
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| X | ||||||||||
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- Definition
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost, Recognized in Net Periodic Benefit Cost, before tax No definition available.
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| X | ||||||||||
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- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of gains or losses recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the transition obligation or asset recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The increase in the fair value of plan assets from contributions made by the employer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. No definition available.
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| X | ||||||||||
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- Definition
Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Regulatory Accounting (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
| Amount of allowed equity return on the true-up balance that has not been recognized | $ 476 | $ 476 | ||
| Amount of allowed equity return on the true-up balance that was recognized in the period | $ 17 | $ 12 | $ 32 | $ 20 |
| X | ||||||||||
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- Definition
Amount of allowed equity return on the true-up balance that was recognized in the period No definition available.
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| X | ||||||||||
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- Definition
Amount of allowed equity return on the true-up balance that has not been recognized as it will be recognized as it is recovered in rates. No definition available.
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Derivative Instruments (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
Years
MMcf
|
Jun. 30, 2013
|
Dec. 31, 2013
MMcf
|
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| Derivatives, Fair Value [Line Items] | ||||||||||||||||||||||||||
| Term of normal weather used as the basis for weather hedges (in years) | 10 | |||||||||||||||||||||||||
| Gains (Losses) Recognized Related to Weather Hedges | $ 0 | $ (3) | $ (8) | $ (6) | ||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Asset, Fair Value | 46 | 46 | 43 | |||||||||||||||||||||||
| Derivative Liability, Fair Value | 484 | 484 | 485 | |||||||||||||||||||||||
| Derivative gross volumes on natural gas contracts (MMcf) | 603,000 | 607,000 | ||||||||||||||||||||||||
| Net long position (MMcf) | 97,000 | 46,000 | ||||||||||||||||||||||||
| Amount of net long position constituted by basis swaps (MMcf) | 97,000 | 99,000 | ||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | (41) | (18) | 11 | (67) | ||||||||||||||||||||||
| Derivative Instruments, Assets, Physical Forwards Purchased | 1 | |||||||||||||||||||||||||
| Derivative, Fair Value, Net [Abstract] | ||||||||||||||||||||||||||
| Net Amount Presented in the Consolidated Balance Sheets | 24 | 24 | 13 | |||||||||||||||||||||||
| Derivative, fair value, offsets, net | 1 | |||||||||||||||||||||||||
| Total fair value of the derivative instruments that contain credit risk contingent features that are in a net liability position | 1 | 1 | 1 | |||||||||||||||||||||||
| The aggregate fair value of assets already posted as collateral | 1 | 1 | 1 | |||||||||||||||||||||||
| Credit Risk Contingent Features assets | 1 | 1 | 1 | |||||||||||||||||||||||
|
Natural gas derivatives [Member]
|
||||||||||||||||||||||||||
| Derivative, Fair Value, Net [Abstract] | ||||||||||||||||||||||||||
| Gross Amounts Recognized | 24 | [1] | 24 | [1] | 13 | [1] | ||||||||||||||||||||
| Net Amount Presented in the Consolidated Balance Sheets | 24 | [2] | 24 | [2] | 13 | [2] | ||||||||||||||||||||
| Derivative, fair value, offsets, net | 0 | 0 | 0 | |||||||||||||||||||||||
|
Natural gas derivatives [Member] | Gains (Losses) in Revenue [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | 5 | 27 | (96) | 13 | ||||||||||||||||||||||
|
Natural gas derivatives [Member] | Gains (Losses) in Expense: Natural Gas [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | 4 | [3] | (18) | [3] | 114 | [3] | (2) | [3] | ||||||||||||||||||
| Derivative Instruments physical purchase | 0 | 2 | ||||||||||||||||||||||||
|
Natural gas derivatives [Member] | Current Assets [Member]
|
||||||||||||||||||||||||||
| Derivative, Fair Value, Net [Abstract] | ||||||||||||||||||||||||||
| Gross Amounts Recognized | 32 | [1] | 32 | [1] | 32 | [1] | ||||||||||||||||||||
| Gross Amounts Offset in the Consolidated Balance Sheets | (6) | (6) | (8) | |||||||||||||||||||||||
| Net Amount Presented in the Consolidated Balance Sheets | 26 | [2] | 26 | [2] | 24 | [2] | ||||||||||||||||||||
|
Natural gas derivatives [Member] | Other Assets [Member]
|
||||||||||||||||||||||||||
| Derivative, Fair Value, Net [Abstract] | ||||||||||||||||||||||||||
| Gross Amounts Recognized | 14 | [1] | 14 | [1] | 11 | [1] | ||||||||||||||||||||
| Gross Amounts Offset in the Consolidated Balance Sheets | (2) | (2) | (1) | |||||||||||||||||||||||
| Net Amount Presented in the Consolidated Balance Sheets | 12 | [2] | 12 | [2] | 10 | [2] | ||||||||||||||||||||
|
Natural gas derivatives [Member] | Current Liabilities [Member]
|
||||||||||||||||||||||||||
| Derivative, Fair Value, Net [Abstract] | ||||||||||||||||||||||||||
| Gross Amounts Recognized | (18) | [1] | (18) | [1] | (25) | [1] | ||||||||||||||||||||
| Gross Amounts Offset in the Consolidated Balance Sheets | 6 | 6 | 8 | |||||||||||||||||||||||
| Net Amount Presented in the Consolidated Balance Sheets | (12) | [2] | (12) | [2] | (17) | [2] | ||||||||||||||||||||
|
Natural gas derivatives [Member] | Other Liabilities [Member]
|
||||||||||||||||||||||||||
| Derivative, Fair Value, Net [Abstract] | ||||||||||||||||||||||||||
| Gross Amounts Recognized | (4) | [1] | (4) | [1] | (5) | [1] | ||||||||||||||||||||
| Gross Amounts Offset in the Consolidated Balance Sheets | 2 | 2 | 1 | |||||||||||||||||||||||
| Net Amount Presented in the Consolidated Balance Sheets | (2) | [2] | (2) | [2] | (4) | [2] | ||||||||||||||||||||
|
Indexed Debt Securities Derivative [Member] | Gains (losses) in Other Income (Expense) [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | (50) | (27) | (7) | (78) | ||||||||||||||||||||||
|
Not Designated as Hedging Instrument [Member] | Natural gas derivatives [Member] | Current Assets [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Asset, Fair Value | 31 | [4],[5] | 31 | [4],[5] | 28 | [6],[7],[8] | ||||||||||||||||||||
| Derivative Liability, Fair Value | 5 | [4],[5] | 5 | [4],[5] | 4 | [6],[7],[8] | ||||||||||||||||||||
| Derivative Instruments, Assets, Physical Forwards Purchased | 1 | |||||||||||||||||||||||||
|
Not Designated as Hedging Instrument [Member] | Natural gas derivatives [Member] | Other Assets [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Asset, Fair Value | 14 | [4],[5] | 14 | [4],[5] | 10 | [6],[7] | ||||||||||||||||||||
| Derivative Liability, Fair Value | 2 | [4],[5] | 2 | [4],[5] | 0 | [6],[7] | ||||||||||||||||||||
|
Not Designated as Hedging Instrument [Member] | Natural gas derivatives [Member] | Current Liabilities [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Asset, Fair Value | 1 | [4],[5] | 1 | [4],[5] | 4 | [6],[7] | ||||||||||||||||||||
| Derivative Liability, Fair Value | 13 | [4],[5] | 13 | [4],[5] | 21 | [6],[7] | ||||||||||||||||||||
|
Not Designated as Hedging Instrument [Member] | Natural gas derivatives [Member] | Other Liabilities [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Asset, Fair Value | 0 | [4],[5] | 0 | [4],[5] | 1 | [6],[7] | ||||||||||||||||||||
| Derivative Liability, Fair Value | 2 | [4],[5] | 2 | [4],[5] | 5 | [6],[7] | ||||||||||||||||||||
|
Not Designated as Hedging Instrument [Member] | Indexed Debt Securities Derivative [Member] | Current Liabilities [Member]
|
||||||||||||||||||||||||||
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] | ||||||||||||||||||||||||||
| Derivative Asset, Fair Value | 0 | 0 | 0 | |||||||||||||||||||||||
| Derivative Liability, Fair Value | 462 | 462 | 455 | |||||||||||||||||||||||
|
Natural Gas Distribution [Member] | 2012 - 2013 [Member]
|
||||||||||||||||||||||||||
| Derivatives, Fair Value [Line Items] | ||||||||||||||||||||||||||
| Weather Hedge, Amount, maximum | 15.0 | |||||||||||||||||||||||||
|
Natural Gas Distribution [Member] | 2013 - 2014 [Member]
|
||||||||||||||||||||||||||
| Derivatives, Fair Value [Line Items] | ||||||||||||||||||||||||||
| Weather Hedge, Amount, maximum | 16.0 | |||||||||||||||||||||||||
|
Electric Transmission and Distribution [Member]
|
||||||||||||||||||||||||||
| Derivatives, Fair Value [Line Items] | ||||||||||||||||||||||||||
| Weather Hedge, Amount, maximum | $ 8.0 | |||||||||||||||||||||||||
|
||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Derivative, fair value, offsets, net No definition available.
|
| X | ||||||||||
|
- Definition
The amount of net long position constituted by basis swaps. No definition available.
|
| X | ||||||||||
|
- Definition
Net long position volume amount taken by the company in its natural gas derivative contracts. No definition available.
|
| X | ||||||||||
|
- Definition
Derivative Gross Volumes on Natural Gas Contracts No definition available.
|
| X | ||||||||||
|
- Definition
Derivative Instruments, Assets, Physical Forwards Purchased No definition available.
|
| X | ||||||||||
|
- Definition
Derivative Instruments Physical Forwards Purchased No definition available.
|
| X | ||||||||||
|
- Definition
Weather Hedge Caps No definition available.
|
| X | ||||||||||
|
- Definition
Period of time used as the basis for weather hedges entered into by the company. No definition available.
|
| X | ||||||||||
|
- Definition
The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net amount as of the balance sheet date of the fair value of derivative assets and derivative liabilities that in accordance with the entity's accounting policy were offset against collateral under a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against an obligation to return collateral. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against the right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value of the assets less the liabilities of a derivative or group of derivatives. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Fair Value Measurements (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Dec. 31, 2013
|
||||||||||||||
| Assets | ||||||||||||||||||
| Corporate equities | $ 812 | $ 812 | $ 770 | |||||||||||||||
| Investments, including money market funds | 51 | 51 | 61 | |||||||||||||||
| Natural gas derivatives | 46 | 46 | 43 | |||||||||||||||
| Natural gas derivatives, assets | 38 | 38 | 34 | [1] | ||||||||||||||
| Total assets | 901 | 901 | 865 | |||||||||||||||
| Liabilities | ||||||||||||||||||
| Indexed debt securities derivative | 462 | 462 | 455 | |||||||||||||||
| Natural gas derivatives | 484 | 484 | 485 | |||||||||||||||
| Natural gas derivatives, liabilities | 14 | 14 | 21 | |||||||||||||||
| Total liabilities | 476 | 476 | 476 | |||||||||||||||
| Cash collateral posted with counterparties | 0 | 0 | 1 | |||||||||||||||
| Derivative Instruments, Assets, Physical Forwards Purchased | 1 | |||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||||||||||||||||
| Beginning balance | 1 | 3 | 3 | 2 | ||||||||||||||
| Total gains | 2 | 1 | 0 | 3 | ||||||||||||||
| Total settlements | 1 | 0 | 2 | (1) | ||||||||||||||
| Transfers into Level 3 | 0 | 0 | (1) | 0 | ||||||||||||||
| Ending balance (1) | 4 | [2] | 4 | [2] | 4 | [2] | 4 | [2] | ||||||||||
| The amount of total gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the reporting date | 1 | 2 | 2 | 3 | ||||||||||||||
|
Fair Value, Inputs, Level 1 [Member]
|
||||||||||||||||||
| Assets | ||||||||||||||||||
| Corporate equities | 812 | 812 | 770 | |||||||||||||||
| Investments, including money market funds | 51 | 51 | 61 | |||||||||||||||
| Natural gas derivatives | 3 | 3 | ||||||||||||||||
| Natural gas derivatives, assets | 5 | |||||||||||||||||
| Total assets | 866 | 866 | 836 | |||||||||||||||
| Liabilities | ||||||||||||||||||
| Indexed debt securities derivative | 0 | 0 | 0 | |||||||||||||||
| Natural gas derivatives | 1 | 1 | 1 | |||||||||||||||
| Total liabilities | 1 | 1 | 1 | |||||||||||||||
|
Fair Value, Inputs, Level 2 [Member]
|
||||||||||||||||||
| Assets | ||||||||||||||||||
| Corporate equities | 0 | 0 | 0 | |||||||||||||||
| Investments, including money market funds | 0 | 0 | 0 | |||||||||||||||
| Natural gas derivatives | 37 | 37 | 33 | |||||||||||||||
| Natural gas derivatives, assets | 33 | |||||||||||||||||
| Total assets | 37 | 37 | 33 | |||||||||||||||
| Liabilities | ||||||||||||||||||
| Indexed debt securities derivative | 462 | 462 | 455 | |||||||||||||||
| Natural gas derivatives | 19 | 19 | 27 | |||||||||||||||
| Total liabilities | 481 | 481 | 482 | |||||||||||||||
|
Fair Value, Inputs, Level 3 [Member]
|
||||||||||||||||||
| Assets | ||||||||||||||||||
| Corporate equities | 0 | 0 | 0 | |||||||||||||||
| Investments, including money market funds | 0 | 0 | 0 | |||||||||||||||
| Natural gas derivatives | 6 | 6 | ||||||||||||||||
| Natural gas derivatives, assets | 5 | |||||||||||||||||
| Total assets | 6 | 6 | 5 | |||||||||||||||
| Liabilities | ||||||||||||||||||
| Indexed debt securities derivative | 0 | 0 | 0 | |||||||||||||||
| Natural gas derivatives | 2 | 2 | 2 | |||||||||||||||
| Total liabilities | 2 | 2 | 2 | |||||||||||||||
|
Netting Adjustments [Member]
|
||||||||||||||||||
| Assets | ||||||||||||||||||
| Corporate equities | 0 | [3] | 0 | [3] | 0 | [4] | ||||||||||||
| Investments, including money market funds | 0 | [3] | 0 | [3] | 0 | [4] | ||||||||||||
| Natural gas derivatives, netting adjustment | (8) | [3] | (8) | [3] | (9) | [1],[4] | ||||||||||||
| Liabilities | ||||||||||||||||||
| Indexed debt securities derivative | 0 | [3] | 0 | [3] | 0 | [4] | ||||||||||||
| Natural gas derivatives, netting adjustment | (8) | [3] | (8) | [3] | (9) | [4] | ||||||||||||
|
Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
|
||||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items] | ||||||||||||||||||
| Option volatilities | 0.00% | 0.00% | ||||||||||||||||
|
Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
|
||||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items] | ||||||||||||||||||
| Option volatilities | 62.00% | 62.00% | ||||||||||||||||
|
Forward Contracts [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
|
||||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items] | ||||||||||||||||||
| Illiquid forward price per mmbtu | 2.62 | |||||||||||||||||
|
Forward Contracts [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
|
||||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items] | ||||||||||||||||||
| Illiquid forward price per mmbtu | 4.98 | |||||||||||||||||
|
Reported Value Measurement [Member]
|
||||||||||||||||||
| Liabilities | ||||||||||||||||||
| Notes Receivable, Fair Value Disclosure | 363 | 363 | 363 | |||||||||||||||
| Long-term Debt | 8,318 | 8,318 | 8,171 | |||||||||||||||
|
Estimate of Fair Value Measurement [Member]
|
||||||||||||||||||
| Liabilities | ||||||||||||||||||
| Notes Receivable, Fair Value Disclosure | 369 | 369 | 363 | |||||||||||||||
| Long-term Debt | $ 9,103 | $ 9,103 | $ 8,670 | |||||||||||||||
|
||||||||||||||||||
| X | ||||||||||
|
- Definition
This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in assets still held at reporting period. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). No definition available.
|
| X | ||||||||||
|
- Definition
The amount of cash that is posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. No definition available.
|
| X | ||||||||||
|
- Definition
Derivative Instruments, Assets, Physical Forwards Purchased No definition available.
|
| X | ||||||||||
|
- Definition
This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis. No definition available.
|
| X | ||||||||||
|
- Definition
This element represents the net asset/liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. No definition available.
|
| X | ||||||||||
|
- Definition
No authoritative reference available. No definition available.
|
| X | ||||||||||
|
- Definition
Option volatilities No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. No definition available.
|
| X | ||||||||||
|
- Definition
Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into (out of) level 3 of the fair value hierarchy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. No definition available.
|
| X | ||||||||||
|
- Definition
The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
|
| X | ||||||||||
|
- Definition
Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract measured in energy volume but not the derivative contract itself. No definition available.
|
|
Unconsolidated Affiliates (Details) (USD $)
|
3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Dec. 31, 2013
|
Jun. 30, 2014
SESH [Member]
|
Jun. 30, 2013
SESH [Member]
|
Jun. 30, 2014
SESH [Member]
|
Jun. 30, 2013
SESH [Member]
|
Apr. 30, 2014
Midstream Partnership [Member]
|
Jun. 30, 2014
Midstream Partnership [Member]
|
Jun. 30, 2013
Midstream Partnership [Member]
|
Jun. 30, 2014
Midstream Partnership [Member]
|
Jun. 30, 2013
Midstream Partnership [Member]
|
Apr. 16, 2014
Midstream Partnership [Member]
|
Jun. 30, 2014
OGE [Member]
Midstream Partnership [Member]
|
Jun. 30, 2014
CERC Corp [Member]
Midstream Partnership [Member]
|
Apr. 16, 2014
CERC Corp [Member]
Midstream Partnership [Member]
|
Mar. 31, 2014
CERC Corp [Member]
Midstream Partnership [Member]
|
Apr. 30, 2014
ArcLight [Member]
Midstream Partnership [Member]
|
Jun. 30, 2014
Midstream Partnership [Member]
|
Jun. 30, 2013
Midstream Partnership [Member]
|
Jun. 30, 2014
Midstream Partnership [Member]
|
Jun. 30, 2013
Midstream Partnership [Member]
|
Dec. 31, 2013
Midstream Partnership [Member]
|
Jun. 30, 2014
SESH [Member]
|
Mar. 31, 2014
SESH [Member]
|
Dec. 31, 2013
SESH [Member]
|
May 30, 2014
May 2014 [Member]
SESH [Member]
|
Jun. 30, 2014
Common Stock [Member]
Midstream Partnership [Member]
|
May 30, 2014
Common Stock [Member]
Midstream Partnership [Member]
|
Jun. 30, 2014
Subordinated Units [Member]
Midstream Partnership [Member]
|
Jun. 01, 2015
Scenario, Unspecified [Domain]
Common Stock [Member]
Midstream Partnership [Member]
|
|||||||||||||||||||
| Term Loan of Affiliate | $ 51,000,000 | $ 51,000,000 | $ 1,100,000,000 | $ 1,100,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| Indebtedness to CERC | 363,000,000 | 363,000,000 | 363,000,000 | 363,000,000 | 363,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum | 2.10% | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 2.45% | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Interest Income (Expense), Net | 2,000,000 | 1,000,000 | 4,000,000 | 1,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| Interest Receivable | 5,000,000 | 5,000,000 | 4,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Transitional Services Costs to be Reimbursed | 37,000,000 | 28,000,000 | 82,000,000 | 28,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| Transitional Service cost receivable | 20,000,000 | 20,000,000 | 21,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Partners' Capital Account, Public Sale of Units Net of Offering Costs | 28,750,000 | 3,750,000 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Sale of Stock, Price Per Share | $ 26.19 | $ 26.19 | $ 20 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Proceeds from Issuance Initial Public Offering | 464,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest | 50.00% | 50.00% | |||||||||||||||||||||||||||||||||||||||||||||||||
| Incentive Distribution Right | 60.00% | 40.00% | |||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investment, Ownership Percentage | 55.40% | 54.70% | 58.30% | 0.10% | 25.05% | ||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investment, Additional Contribution of Ownership Percentage | 0.10% | 24.95% | |||||||||||||||||||||||||||||||||||||||||||||||||
| equity method investment, Additional Contribution of ownership, value | 198,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Cost of natural gas purchases, affiliates | 27,000,000 | 28,000,000 | 75,000,000 | 28,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| Due to Affiliate | 15,000,000 | 15,000,000 | 22,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investment, Ownership, Shares | 94,126,366 | 6,322,457 | 139,704,916 | 25,341 | |||||||||||||||||||||||||||||||||||||||||||||||
| Investment in unconsolidated affiliates | 4,517,000,000 | 4,517,000,000 | 4,518,000,000 | 4,517,000,000 | 4,517,000,000 | 4,319,000,000 | 0 | [1] | 199,000,000 | [1] | |||||||||||||||||||||||||||||||||||||||||
| Equity in earnings of unconsolidated affiliates, net | 71,000,000 | 37,000,000 | 162,000,000 | 42,000,000 | 2,000,000 | [2] | 4,000,000 | [2] | 5,000,000 | [2] | 9,000,000 | [2] | 69,000,000 | [3] | 33,000,000 | [3] | 157,000,000 | [3] | 33,000,000 | [3] | |||||||||||||||||||||||||||||||
| Operating revenues | 826,000,000 | 502,000,000 | [4] | 1,828,000,000 | 502,000,000 | [4] | |||||||||||||||||||||||||||||||||||||||||||||
| Cost of sales, excluding depreciation and amortization | 478,000,000 | 295,000,000 | [4] | 1,111,000,000 | 295,000,000 | [4] | |||||||||||||||||||||||||||||||||||||||||||||
| Operating income | 139,000,000 | 75,000,000 | [4] | 301,000,000 | 75,000,000 | [4] | |||||||||||||||||||||||||||||||||||||||||||||
| Net income attributable to Enable | 120,000,000 | 65,000,000 | [4] | 269,000,000 | 65,000,000 | [4] | |||||||||||||||||||||||||||||||||||||||||||||
| CenterPoint Energy's approximate interest | 67,000,000 | 38,000,000 | [4] | 154,000,000 | 38,000,000 | [4] | |||||||||||||||||||||||||||||||||||||||||||||
| Basis difference accretion (amortization) | 2,000,000 | 3,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Basis Difference Amortization | (5,000,000) | [4] | (5,000,000) | [4] | |||||||||||||||||||||||||||||||||||||||||||||||
| CenterPoint Energy's equity in earnings, net | 67,000,000 | 38,000,000 | [4] | 154,000,000 | 38,000,000 | [4] | |||||||||||||||||||||||||||||||||||||||||||||
| Current assets | 923,000,000 | 923,000,000 | 549,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Non-current assets | 10,815,000,000 | 10,815,000,000 | 10,683,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Current liabilities | 584,000,000 | 584,000,000 | 720,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Non-current liabilities | 2,343,000,000 | 2,343,000,000 | 2,331,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Non-controlling interest | 32,000,000 | 32,000,000 | 33,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Enable partners' capital | 8,779,000,000 | 8,779,000,000 | 8,148,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| CenterPoint Energy's ownership interest in Enable's partner capital | 4,862,000,000 | 4,862,000,000 | 4,753,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Total CenterPoint Energy's basis differences | (345,000,000) | (345,000,000) | (434,000,000) | ||||||||||||||||||||||||||||||||||||||||||||||||
| CenterPoint Energy's investment in Enable | 4,517,000,000 | 4,517,000,000 | 4,319,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Proceeds from Equity Method Investment, Dividends or Distributions | 4,000,000 | 8,000,000 | 7,000,000 | 17,000,000 | 90,000,000 | 0 | 157,000,000 | 0 | |||||||||||||||||||||||||||||||||||||||||||
| Income Loss From Equity Method Investments, net of basis difference | $ 69,000,000 | $ 33,000,000 | [4] | $ 157,000,000 | $ 33,000,000 | [4] | |||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Basis Difference Accretion Gain No definition available.
|
| X | ||||||||||
|
- Definition
Basis Difference Amortization No definition available.
|
| X | ||||||||||
|
- Definition
Cost of natural gas purchased and associated transportation and storage costs during the period from unconsolidated affiliates No definition available.
|
| X | ||||||||||
|
- Definition
Equity Method Investment, Additional Contribution of Ownership Percentage No definition available.
|
| X | ||||||||||
|
- Definition
equity method investment, Additional Contribution of ownership, value No definition available.
|
| X | ||||||||||
|
- Definition
equity method investment, basis difference, Total No definition available.
|
| X | ||||||||||
|
- Definition
Equity Method Investment, Ownership, Shares No definition available.
|
| X | ||||||||||
|
- Definition
Equity Method Investment, Summarized Fnancial Information, Operating Income No definition available.
|
| X | ||||||||||
|
- Definition
Equity Method Investments Underlying Equity in Net Assets, Net of Basis Difference No definition available.
|
| X | ||||||||||
|
- Definition
Gross equity in earnings No definition available.
|
| X | ||||||||||
|
- Definition
Incentive Distribution Right No definition available.
|
| X | ||||||||||
|
- Definition
Income Loss From Equity Method Investments, net of basis difference No definition available.
|
| X | ||||||||||
|
- Definition
Transitional Service Costs to be Reimbursed No definition available.
|
| X | ||||||||||
|
- Definition
Transitional Services Receivable No definition available.
|
| X | ||||||||||
|
- Definition
Maximum contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Minimum contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due after 1 year (or 1 business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of the cost of sales reported by an equity method investment of the entity. No definition available.
|
| X | ||||||||||
|
- Definition
The amount of current assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of current liabilities reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of equity, including noncontrolling interest, reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of equity attributable to noncontrolling interests of an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of net income (loss) reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of noncurrent assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of noncurrent liabilities reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity. No definition available.
|
| X | ||||||||||
|
- Definition
This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net amount of operating interest income (expense). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Price of a single share of a number of saleable stocks of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Goodwill (Details) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Goodwill [Line Items] | ||
| Goodwill | $ 840 | $ 840 |
|
Natural Gas Distribution [Member]
|
||
| Goodwill [Line Items] | ||
| Goodwill | 746 | 746 |
|
Energy Services [Member]
|
||
| Goodwill [Line Items] | ||
| Goodwill | 83 | 83 |
|
Corporate and Other [Member]
|
||
| Goodwill [Line Items] | ||
| Goodwill | $ 11 | $ 11 |
| X | ||||||||||
|
- Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Capital Stock (Details) (USD $)
|
Jun. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Capital stock shares authorized (in shares) | 1,020,000,000 | |
| Common stock shares authorized (in shares) | 1,000,000,000 | |
| Common stock shares par value (in dollars per share) | $ 0.01 | |
| Cumulative preferred stock shares authorized (in shares) | 20,000,000 | |
| Cumulative preferred stock par value (in dollars per share) | $ 0.01 | |
| Total common stock issued (in shares) | 429,795,996 | 428,798,612 |
| Total common stock outstanding (in shares) | 429,795,830 | 428,798,446 |
| Treasury stock (in shares) | 166 | 166 |
| X | ||||||||||
|
- Definition
The maximum number of capital shares permitted to be issued by an entity's charter and bylaws. No definition available.
|
| X | ||||||||||
|
- Definition
Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Short-Term Borrowings and Long-term Debt (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Dec. 31, 2013
|
Jun. 30, 2014
Bank loans due 2016 [Member]
CenterPoint Houston [Member]
|
Dec. 31, 2013
Bank loans due 2016 [Member]
CenterPoint Houston [Member]
|
Jun. 30, 2014
Bank loans due 2016 [Member]
CenterPoint Energy [Member]
|
Dec. 31, 2013
Bank loans due 2016 [Member]
CenterPoint Energy [Member]
|
Jun. 30, 2014
Bank loans due 2016 [Member]
CERC Corp [Member]
|
Dec. 31, 2013
Bank loans due 2016 [Member]
CERC Corp [Member]
|
Jun. 30, 2014
March 2014 [Member]
Bonds Pollution Control Due2017 [Member]
CenterPoint Houston [Member]
|
Jun. 30, 2014
March 2014 [Member]
Bonds Pollution Control Due2027 [Member]
CenterPoint Houston [Member]
|
Jun. 30, 2014
June 2014 [Member]
Bonds Pollution Control Due2017 [Member]
CenterPoint Houston [Member]
|
Jun. 30, 2014
June 2014 [Member]
Bonds Pollution Control Due2017 [Member]
CenterPoint Houston [Member]
|
Jun. 30, 2014
Product Financing Arrangement [Member]
|
Dec. 31, 2013
Product Financing Arrangement [Member]
|
Jun. 30, 2014
Bonds General Mortgage Due 2044 [Member]
CenterPoint Houston [Member]
|
|
| Debt Instrument [Line Items] | |||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 4.25% | 5.60% | 4.25% | 4.25% | 4.50% | ||||||||||
| Debt Instrument, Maturity Date | Mar. 01, 2017 | Mar. 01, 2027 | Dec. 01, 2017 | Apr. 01, 2044 | |||||||||||
| Extinguishment Of Debt Purchase Price Percentage Of Principal | 101.00% | 101.00% | 100.00% | ||||||||||||
| Extinguishment of Debt, Amount | $ 44 | $ 56 | $ 84 | ||||||||||||
| Total short term borrowings | 42 | 43 | 42 | 43 | |||||||||||
| Debt Instrument, Face Amount | 600 | ||||||||||||||
| Long-term Debt [Abstract] | |||||||||||||||
| Total credit facility amount | 2,100 | 2,100 | 300 | 300 | 1,200 | 1,200 | 600 | 600 | |||||||
| Loans Outstanding | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Letters of Credit outstanding | 10 | 10 | 4 | 4 | 6 | 6 | 0 | 0 | |||||||
| Commercial Paper Outstanding | 41 | 118 | 0 | 0 | 41 | 0 | 0 | 118 | |||||||
| Revolving credit facility borrowing rate | LIBOR plus 112.5 | London Interbank Offered Rate (LIBOR) plus 125 | LIBOR plus 150 | ||||||||||||
| Percentage on limitation of debt to total capitalization under covenant (in hundredths) | 65.00% | 65.00% | 65.00% | ||||||||||||
| Percentage on limitation of debt to total capitalization under covenant amended (in hundredths) | 70.00% | ||||||||||||||
| System restoration costs threshold for increase in permitted debt to EBITDA covenant ratio | $ 100 | ||||||||||||||
| Consecutive Period for System Restoration Costs to Exceed $100 million (in months) | 12 | ||||||||||||||
| X | ||||||||||
|
- Definition
Consecutive Period for System Restoration Costs to Exceed $100 million (in months) No definition available.
|
| X | ||||||||||
|
- Definition
Repurchase price of debt obligations expressed as a percentage of principal amount No definition available.
|
| X | ||||||||||
|
- Definition
Temporary increased percentage on limitation of debt to total capitalization under covenant (in hundredths) No definition available.
|
| X | ||||||||||
|
- Definition
Percentage on limitation of debt to total capitalization under covenant. No definition available.
|
| X | ||||||||||
|
- Definition
The minimum amount of estimated restoration cost in a calendar year in order for a temporary increase in debt to EBITDA covenant No definition available.
|
| X | ||||||||||
|
- Definition
Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Gross amount of debt extinguished. No definition available.
|
| X | ||||||||||
|
- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
|
| X | ||||||||||
|
- Definition
Amount borrowed under the credit facility as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term unsecured obligations issued by corporations and other borrowers to investors (with maturities initially due after one year or beyond the operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Income Taxes (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
| Effective Income Tax Rate Reconciliation, Percent | 37.00% | 169.00% | 37.00% | 88.00% |
| Deferred income taxes | $ 13 | $ 257 | ||
|
Midstream Partnership [Member]
|
||||
| Deferred Tax Liabilities, Goodwill and Intangible Assets | 225 | 225 | ||
| Deferred income taxes | $ (29) | |||
| X | ||||||||||
|
- Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Commitments and Contingencies (Details) (USD $)
|
6 Months Ended |
|---|---|
|
Jun. 30, 2014
|
|
| Recorded Unconditional Purchase Obligation | |
| Remainder of 2014 | $ 259,000,000 |
| 2015 | 528,000,000 |
| 2016 | 454,000,000 |
| 2017 | 384,000,000 |
| 2018 | 376,000,000 |
| After 2018 | 174,000,000 |
| Loss Contingency Pending Gas Market Manipulation Lawsuits Number | 1 |
| Legal Environmental And Other Regulatory Matters | |
| Number of remaining sites in the Minnesota service territory (in number of sites) | 7 |
| Number of the remaining sites in the Minnesota service territory where the company believes it has no liability (in number of sites) | 2 |
| Number of sites where remediation is complete, other than ongoing operations (in number of sites) | 2 |
| Amount accrued for remediation of Minnesota sites (in number of sites) | 13,000,000 |
| Annual amount included in rates to fund normal on-going remediation costs | 285,000 |
| Amount collected from insurance companies to be used for future environmental remediation | 6,000,000 |
| Approximate amount of undiscounted maximum obligation under guarantee | 51,000,000 |
|
CenterPoint Energy [Member]
|
|
| Legal Environmental And Other Regulatory Matters | |
| Guarantee Obligations Maximum Amount Upon Completion Of Gathering Systems | 100,000,000 |
|
Midstream Partnership [Member]
|
|
| Legal Environmental And Other Regulatory Matters | |
| Approximate amount of undiscounted maximum obligation under guarantee | 1,100,000,000 |
|
Minimum [Member]
|
|
| Legal Environmental And Other Regulatory Matters | |
| Maximum estimated remediation costs for the Minnesota sites | 6,000,000 |
| Years of remediation for the Minnesota sites (in years) | 30 |
|
Maximum [Member]
|
|
| Legal Environmental And Other Regulatory Matters | |
| Maximum estimated remediation costs for the Minnesota sites | $ 41,000,000 |
| Years of remediation for the Minnesota sites (in years) | 50 |
| X | ||||||||||
|
- Definition
Maximum amount of guarantees reduce to plus any additional amounts related to expansion of services upon completion of gathering systems. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The total number of pending lawsuits related to gas market manipulation. No definition available.
|
| X | ||||||||||
|
- Definition
Recorded Unconditional Purchase Obligation Due after Fourth Year No definition available.
|
| X | ||||||||||
|
- Definition
Number of manufactured gas plant sites where remediation is complete, other than ongoing operations. No definition available.
|
| X | ||||||||||
|
- Definition
Estimate of the reasonably possible loss exposure at an individual site. No definition available.
|
| X | ||||||||||
|
- Definition
Number of other sites in the company's Minnesota service territory. No definition available.
|
| X | ||||||||||
|
- Definition
Number of sites in Minnesota where the company believes it has no liability. No definition available.
|
| X | ||||||||||
|
- Definition
Total costs accrued as of the balance sheet date for environmental loss contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of any recovery from third parties that is credited to environmental remediation costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Recorded amount of the individual components comprising the asset for third-party recoveries related to environmental remediation obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of the recorded unconditional purchase obligation maturing in the fourth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of the recorded unconditional purchase obligation maturing in the remainder of the fiscal year following the latest fiscal year ended. No definition available.
|
| X | ||||||||||
|
- Definition
Amount of the recorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of the recorded unconditional purchase obligation maturing in the third fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of the recorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Estimated time frame for resolution of the uncertainty as to the loss for an individual site. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Earnings Per Share (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
| Net income (loss) | $ 107 | $ (100) | $ 292 | $ 47 |
| Basic weighted average shares outstanding | 429,773,000 | 428,571,000 | 429,470,000 | 428,268,000 |
| Plus: Incremental shares from assumed conversions: | ||||
| Stock options | 0 | 108,000 | 0 | 103,000 |
| Restricted stock | 1,636,000 | 1,875,000 | 1,636,000 | 1,875,000 |
| Diluted weighted average shares | 431,409,000 | 430,554,000 | 431,106,000 | 430,246,000 |
| Basic earnings (loss) per share: | ||||
| Net income (loss) | $ 0.25 | $ (0.23) | $ 0.68 | $ 0.11 |
| Diluted earnings (loss) per share: | ||||
| Net income (loss) | $ 0.25 | $ (0.23) | $ 0.68 | $ 0.11 |
| X | ||||||||||
|
- Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of contingently issuable shares. Contingently issuable shares are those shares that are issuable for little or no cash contingent on certain conditions being met. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Reportable Business Segments (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 2 Months Ended | 3 Months Ended | 6 Months Ended | 2 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Dec. 31, 2013
|
Jun. 30, 2014
Midstream Partnership [Member]
|
Dec. 31, 2013
Midstream Partnership [Member]
|
Jun. 30, 2014
SESH [Member]
|
Dec. 31, 2013
SESH [Member]
|
Jun. 30, 2014
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Consolidation, Eliminations [Member]
|
Dec. 31, 2013
Consolidation, Eliminations [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
Affiliates of NRG Energy, Inc. [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
Affiliates of NRG Energy, Inc. [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
Affiliates of NRG Energy, Inc. [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
Affiliates of NRG Energy, Inc. [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
Affiliates of Energy Future Holdings Corp. [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
Affiliates of Energy Future Holdings Corp. [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
Affiliates of Energy Future Holdings Corp. [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
Affiliates of Energy Future Holdings Corp. [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Electric Transmission and Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Electric Transmission and Distribution [Member]
Operating Segments [Member]
|
Dec. 31, 2013
Electric Transmission and Distribution [Member]
Operating Segments [Member]
|
Jun. 30, 2014
Natural Gas Distribution [Member]
|
Jun. 30, 2013
Natural Gas Distribution [Member]
|
Jun. 30, 2014
Natural Gas Distribution [Member]
|
Jun. 30, 2013
Natural Gas Distribution [Member]
|
Jun. 30, 2014
Natural Gas Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Natural Gas Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Natural Gas Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Natural Gas Distribution [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Natural Gas Distribution [Member]
Operating Segments [Member]
|
Dec. 31, 2013
Natural Gas Distribution [Member]
Operating Segments [Member]
|
Jun. 30, 2014
Energy Services [Member]
|
Jun. 30, 2013
Energy Services [Member]
|
Jun. 30, 2014
Energy Services [Member]
|
Jun. 30, 2013
Energy Services [Member]
|
Jun. 30, 2014
Energy Services [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Energy Services [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Energy Services [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Energy Services [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Energy Services [Member]
Operating Segments [Member]
|
Dec. 31, 2013
Energy Services [Member]
Operating Segments [Member]
|
Jun. 30, 2013
Interstate Pipelines [Member]
|
Jun. 30, 2013
Interstate Pipelines [Member]
|
Jun. 30, 2013
Interstate Pipelines [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Interstate Pipelines [Member]
Intersegment Eliminations [Member]
|
Dec. 31, 2013
Interstate Pipelines [Member]
Operating Segments [Member]
|
Jun. 30, 2013
Field Services [Member]
|
Jun. 30, 2013
Field Services [Member]
|
Jun. 30, 2013
Field Services [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Field Services [Member]
Intersegment Eliminations [Member]
|
Dec. 31, 2013
Field Services [Member]
Operating Segments [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
|
Jun. 30, 2013
Midstream Investments [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
|
Jun. 30, 2013
Midstream Investments [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
Midstream Partnership [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
Midstream Partnership [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
Midstream Partnership [Member]
|
Dec. 31, 2013
Midstream Investments [Member]
Midstream Partnership [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
CERC Remaining Interest in SESH [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
CERC Remaining Interest in SESH [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
CERC Remaining Interest in SESH [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
SESH [Member]
|
Dec. 31, 2013
Midstream Investments [Member]
SESH [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Midstream Investments [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Midstream Investments [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Midstream Investments [Member]
Operating Segments [Member]
|
Dec. 31, 2013
Midstream Investments [Member]
Operating Segments [Member]
|
Jun. 30, 2014
Other Operations [Member]
|
Jun. 30, 2013
Other Operations [Member]
|
Jun. 30, 2014
Other Operations [Member]
|
Jun. 30, 2013
Other Operations [Member]
|
Dec. 31, 2013
Other Operations [Member]
|
Jun. 30, 2014
Other Operations [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Other Operations [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Other Operations [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2013
Other Operations [Member]
Intersegment Eliminations [Member]
|
Jun. 30, 2014
Other Operations [Member]
Operating Segments [Member]
|
Dec. 31, 2013
Other Operations [Member]
Operating Segments [Member]
|
|||||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investment, Additional Contribution of Ownership Percentage | 0.10% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenues | $ 1,884 | $ 1,894 | $ 5,047 | $ 4,282 | $ (25) | $ (31) | $ (66) | $ (99) | $ 698 | [1] | $ 656 | [1] | $ 1,327 | [1] | $ 1,188 | [1] | $ 164 | $ 148 | $ 330 | $ 291 | $ 41 | $ 37 | $ 81 | $ 73 | $ 0 | $ 0 | $ 0 | $ 0 | $ 526 | $ 524 | $ 2,004 | $ 1,567 | $ (6) | $ (5) | $ (15) | $ (13) | $ 657 | $ 622 | $ 1,709 | $ 1,210 | $ (19) | $ (6) | $ (51) | $ (15) | $ 41 | [2] | $ 133 | [2] | $ (13) | [2] | $ (53) | [2] | $ 48 | [2] | $ 178 | [2] | $ (7) | [2] | $ (18) | [2] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 3 | $ 3 | $ 7 | $ 6 | $ 0 | $ 0 | $ 0 | $ 0 | |||||||||||||||||||||||||||||||||||||||||||||
| Operating Income (Loss) | 186 | 223 | 481 | 555 | 145 | 165 | 250 | 249 | 30 | 25 | 192 | 164 | 11 | 3 | 37 | 10 | 20 | [2] | 72 | [2] | 20 | [2] | 73 | [2] | 0 | [3] | 0 | [3] | 0 | [3] | 0 | [3] | 0 | (10) | 2 | (13) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assets | 21,920 | 21,920 | 21,870 | (1,193) | (1,150) | 9,809 | 9,605 | 4,989 | 4,976 | 896 | 895 | 0 | 0 | 4,517 | [3] | 4,518 | [3] | 2,902 | [4] | 3,026 | [4] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity in earnings of unconsolidated affiliates, net | 71 | 37 | 162 | 42 | 33 | 69 | 157 | 2 | 2 | 5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investment in unconsolidated affiliates | 4,517 | 4,517 | 4,518 | 4,517 | 4,319 | 0 | [5] | 199 | [5] | 4,517 | 4,517 | 4,517 | 4,319 | 0 | 199 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting Pension Plan Assets | $ 605 | $ 605 | $ 627 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Equity Method Investment, Additional Contribution of Ownership Percentage No definition available.
|
| X | ||||||||||
|
- Definition
This represents the assets recognized in the Other Operations segment that are associated with the defined benefit plans. No definition available.
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
|
- Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Subsequent Events (Details) (Dividend Declared [Member], USD $)
|
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2014
|
Jul. 24, 2014
Subsequent Event [Member]
|
|
| Subsequent Event [Line Items] | ||
| Dividends Payable, Date Declared | Jul. 24, 2014 | |
| Dividends Payable, Amount Per Share | $ 0.2375 | |
| Dividends Payable, Date to be Paid, Day, Month and Year | Sep. 10, 2014 | |
| Dividends Payable, Date of Record, Day, Month and Year | Aug. 15, 2014 |
| X | ||||||||||
|
- Definition
Date the declared dividend will be paid, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The per share amount of a dividend declared, but not paid, as of the financial reporting date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Date the dividend to be paid was declared, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. No definition available.
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