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Commitments and Contingencies - Additional Information (Detail) (Indian Department of Central Excise Authority, Cadbury India Limited., Maximum, USD $)
In Millions, unless otherwise specified
1 Months Ended 11 Months Ended
Feb. 28, 2013
Dec. 31, 2013
Indian Department of Central Excise Authority | Cadbury India Limited. | Maximum
   
Loss Contingencies [Line Items]    
Formal claim of notice presented for unpaid excise tax $ 46 $ 20
Tax penalties and interest expense $ 46 $ 20