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Goodwill and Intangible Assets - Additional Information (Detail)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
Brand
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
May 02, 2016
USD ($)
Goodwill and Intangible Assets Disclosure [Line Items]            
Amortization expense for intangible assets $ 44   $ 45 $ 132 $ 137  
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       30    
Number of brands | Brand   7        
Intangible asset, aggregate book value 17,603 $ 17,527   17,603    
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]            
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    
EEMEA Segment            
Goodwill and Intangible Assets Disclosure [Line Items]            
Asset impairment charges on intangible assets       4    
Trademarks            
Goodwill and Intangible Assets Disclosure [Line Items]            
Asset impairment charges on intangible assets   $ 71        
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