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Assets And Liabilities Measured At Fair Value Realized Unrealized Gain Loss (Details) (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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| Realized and unrealized gains on financial instruments, net | $ (73) | $ (18) |
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Non-Strategic Securities [Member]
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| Realized and unrealized gains on financial instruments, net | 224 | 140 |
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Exchangeable Senior Debentures [Member]
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| Realized and unrealized gains on financial instruments, net | (310) | (182) |
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Other [Member]
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| Realized and unrealized gains on financial instruments, net | $ 13 | $ 24 |
| X | ||||||||||
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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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