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Goodwill by Operating Segment (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Goodwill  
Balance December 31, 2012 $ 932
Additions 14
Currency Translation Adjustments (12)
Balance June 30, 2013 934
Americas
 
Goodwill  
Balance December 31, 2012 616
Additions 11
Currency Translation Adjustments (1)
Balance June 30, 2013 626
International
 
Goodwill  
Balance December 31, 2012 316
Additions 3
Currency Translation Adjustments (11)
Balance June 30, 2013 $ 308