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Financial Instruments And Derivatives (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Financial Instruments And Derivatives [Line Items] | |||
| Estimated fair value of total long-term debt, including capitalized lease obligations | $ 9,800,000,000 | $ 12,800,000,000 | |
| Recorded book values of total long-term debt, including capitalized lease obligations | 9,322,000,000 | 12,227,000,000 | |
| Derivative asset at fair value, net | 172,000,000 | ||
| Derivative liability at fair value, net | 3,000,000 | ||
| Gain (loss) before-tax earnings impact of derivatives | 131,000,000 | 221,000,000 | (73,000,000) |
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Cash Flow Hedges [Member]
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| Financial Instruments And Derivatives [Line Items] | |||
| Gain (loss) before-tax earnings impact of derivatives | $ 136,000,000 | ||
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- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value as of the balance sheet date of the gross assets less the gross liabilities of a derivative asset or group of derivative assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value as of the balance sheet date of the gross assets less the gross liabilities of a derivative liability or group of derivative liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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