v2.4.0.8
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