|
Financial Instruments (Details 1) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2012
|
Dec. 31, 2011
|
|
| Summary of reconciliation of the carrying amount of derivative financial instruments, net liability position | ||
| Beginning balance | $ (37) | |
| Total losses for the period included in net loss | (12) | |
| Net settlement of foreign exchange derivative contracts related to euro denominated debt | 16 | |
| Termination of foreign exchange derivative contracts (settlement pending) | 9 | |
| Settlement of interest rate derivative contracts | 2 | |
| Ending balance | $ (22) | $ (37) |