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Goodwill by Operating Segment (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Goodwill  
Balance December 31, 2012 $ 932
Additions 16
Currency Translation Adjustments (3)
Balance September 30, 2013 945
Americas
 
Goodwill  
Balance December 31, 2012 616
Additions 12
Currency Translation Adjustments (1)
Balance September 30, 2013 627
International
 
Goodwill  
Balance December 31, 2012 316
Additions 4
Currency Translation Adjustments (2)
Balance September 30, 2013 $ 318