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Schedule of Liability Activity for Integration Programs (Detail) (Cadbury Integration Program, USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Cadbury Integration Program
 
Integration Program [Line Items]  
Balance at beginning of period $ 145
Charges (6)
Cash spent (51)
Currency / other (17)
Balance at end of period $ 71