Financial Instruments (Realized And Unrealized Gains (Losses) On Financial Instruments) (Details) (USD $) In Millions |
3 Months Ended | 9 Months Ended | ||||||||
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Sep. 30, 2011 |
Sep. 30, 2010 |
Sep. 30, 2011 |
Sep. 30, 2010 |
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| Realized and unrealized gains on financial instruments, net | $ (257) | $ 70 | $ (81) | $ 124 | ||||||
| Net impact from Non-strategic Securities | (265) | 148 | 2 | 239 | ||||||
Non-Strategic Securities [Member] |
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| Realized and unrealized gains on financial instruments, net | (337) | [1] | 392 | [1] | 48 | [1] | 422 | [1] | ||
Borrowed Shares [Member] |
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| Realized and unrealized gains on financial instruments, net | 72 | [1] | (244) | [1] | (46) | [1] | (183) | [1] | ||
Equity Collars [Member] |
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| Realized and unrealized gains on financial instruments, net | 0 | 0 | 0 | (2) | ||||||
Exchangeable Senior Debentures [Member] |
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| Realized and unrealized gains on financial instruments, net | 0 | (76) | (85) | (82) | ||||||
Other Financial Instruments [Member] |
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| Realized and unrealized gains on financial instruments, net | $ 8 | $ (2) | $ 2 | $ (31) | ||||||
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- Definition Net impact from Non-strategic Securities. This is the difference between the Mark to market on the Non-strategic Securities and the borrowed shares positions on the same owned Non-strategic Securities.
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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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