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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2015
Dec. 31, 2014
Income Tax Contingency [Line Items]                
Impact on provision for income tax, out-of-period adjustments $ (5)     $ 20 $ 6 $ 15    
Effective tax rate 4.50%     16.50% 6.50% 12.50%   21.20%
Net unfavorable tax charge related to the sale of joint venture   $ 22 $ 32   $ 54      
Net favorable tax audit settlements and expirations of statutes of limitations $ 40     $ 109 75      
Gains on divestitures 7,122       $ 7,135      
Total favorable discrete items       65   $ 169    
Tax return to provision adjustments       $ 20        
Coffee Business                
Income Tax Contingency [Line Items]                
Gains on divestitures 7,122              
Tax expense on gains from divestitures 197              
Tax costs incurred to remit proceeds up from lower-tier foreign subsidiaries $ 21              
Scenario, Forecast                
Income Tax Contingency [Line Items]                
Estimated effective tax rate             23.10%