|
Derivative and Financial Instruments - FX Balance Sheet (Details 3) (USD $)
In Millions, unless otherwise specified |
Sep. 30, 2012
|
Dec. 31, 2011
|
|---|---|---|
|
Prepaid Expenses and Other Current Assets [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Foreign currency exchange derivative assets | $ 72 | $ 12 |
|
Other Assets [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Foreign currency exchange derivative assets | 0 | 1 |
|
Other Accruals [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Foreign currency exchange derivative liabilities | 16 | 23 |
|
Other liabilities and deferred credits [Member]
|
||
| Derivatives, Fair Value [Line Items] | ||
| Foreign currency exchange derivative liabilities | $ 1 | $ 0 |