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Amount and Location in the Income Statement for Derivatives Designed as Cash Flow Hedges (Detail) (Cash Flow Hedging [Member], USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2013
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Mar. 31, 2012
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) | $ (18) | $ (67) |
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Interest Rate Contracts | Interest Expense [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) | 1 | (8) |
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Foreign Exchange Contracts | Interest Expense [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) | (1) | (59) |
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Commodity Contracts | Fuel Expense [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) | $ (18) | $ 0 |
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- Details
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- Definition
The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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