|
Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
| Income Statement [Abstract] | ||||
| Net (loss)/gain on disposal of discontinued operations, taxes | $ 1 | $ (2) | $ 2 | $ 0 |