|
Assets And Liabilities Measured At Fair Value Non-recurring basis (details) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Goodwill and Intangible Asset Impairment | $ 92 | $ 0 | $ 0 |