|
Assets And Liabilities Measured At Fair Value Realized Unrealized Gain Loss (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2012
|
Mar. 31, 2011
|
|
| Realized and unrealized gains on financial instruments, net | $ (18) | $ (59) |
|
Non-Strategic Securities [Member]
|
||
| Realized and unrealized gains on financial instruments, net | 140 | 97 |
|
Exchangeable Senior Debentures [Member]
|
||
| Realized and unrealized gains on financial instruments, net | (182) | (187) |
|
Other [Member]
|
||
| Realized and unrealized gains on financial instruments, net | $ 24 | $ 31 |