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Commitments and Contingencies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2013
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Feb. 12, 2013
|
|
| Collateral liability for unconsolidated subsidiary debt | $ 482 | |
| Cash paid for settlement of collateral liability | 602 | |
|
Station Venture Senior Secured Note Due In 2023 [Member]
|
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| Debt of unconsolidated variable interest entity | $ 816 | |
| Maturity year | 2023 |