|
Impairments (Details 2) (USD $)
In Millions, except Per Share data, unless otherwise specified |
12 Months Ended |
|---|---|
|
Dec. 31, 2012
|
|
| Impairment of definite-lived intangible assets | |
| Impairment loss on definite-lived intangible asset | $ 22 |
|
Customer relationships
|
|
| Impairment of definite-lived intangible assets | |
| Impairment loss on definite-lived intangible asset | 22 |
| Impairment loss on finite-lived intangible asset, continuing operations | $ 17 |
| Impairment loss on long-lived assets per diluted share, continuing operations | $ 0.05 |