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Goodwill and Intangible Assets - Additional Information (Detail)
$ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2016
USD ($)
May 31, 2016
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
Brand
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
May 02, 2016
USD ($)
Jul. 15, 2015
Goodwill and Intangible Assets Disclosure [Line Items]                  
Amortization expense for intangible assets     $ 44   $ 46 $ 88 $ 92    
Estimated amortization expense in year 1     185     185      
Estimated amortization expense in year 2     185     185      
Estimated amortization expense in year 3     185     185      
Estimated amortization expense in year 4     185     185      
Estimated amortization expense in year 5     185     185      
Asset impairment charges on intangible assets           26      
Number of brands | Brand       7          
Intangible asset, aggregate book value     17,618 $ 17,527   17,618      
Fair Value Over Book Value 10% or Less                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Intangible asset, aggregate book value       598          
Vietnam                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Percentage of equity interest acquired                 80.00%
Finite-lived intangible assets acquired           25      
Indefinite-lived intangible assets acquired           61      
Discontinued Operations, Disposed of by Sale | FINLAND                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Indefinite-lived Intangible assets, divested     $ 8     8   $ 8  
North America Segment                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Asset impairment charges on intangible assets           7      
Trademarks                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Asset impairment charges on intangible assets       $ 71          
Trademarks | Europe Segment                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Asset impairment charges on intangible assets $ 14 $ 5              
Trademarks | Planned Sale of Confectionery Business in France | Europe Segment                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Asset impairment charges on intangible assets           $ 19      
Weighted Average                  
Goodwill and Intangible Assets Disclosure [Line Items]                  
Life of our amortizable intangible assets (in years)           13 years 7 months 6 days