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Basis of Presentation - Additional Information (Detail)
$ in Millions
 3 Months Ended 6 Months Ended
Jan. 23, 2014
Jun. 30, 2015
USD ($)
Country
Mar. 31, 2015
USD ($)
Dec. 31, 2014
Jun. 30, 2014
USD ($)
 [1]
Mar. 31, 2014
USD ($)
Jun. 30, 2015
USD ($)
Country
Jun. 30, 2014
USD ($)
 [1]
Feb. 10, 2015
Feb. 08, 2013
Jan. 02, 2010
Summary Of Significant Accounting Policies [Line Items]                      
Change in accounting policy effect of change on net revenue             $ 39        
Change in accounting policy effect of change on operating results             19        
Net revenue   $ 7,661     $ 8,436   $ 15,423 $ 17,077      
Number of countries in which entity operates | Country   80         80        
Number of countries in which products are sold | Country             165        
Argentina                      
Summary Of Significant Accounting Policies [Line Items]                      
Net revenue   $ 185         $ 360        
Percentage of consolidated net revenues   2.40%         2.30%        
Russia                      
Summary Of Significant Accounting Policies [Line Items]                      
Net revenue     $ 210       $ 380        
Percentage of consolidated net revenues     2.70%       2.50%        
SICAD I                      
Summary Of Significant Accounting Policies [Line Items]                      
Foreign currency impacts relating to highly inflationary accounting           $ (142)          
SICAD                      
Summary Of Significant Accounting Policies [Line Items]                      
Foreign currency impacts relating to highly inflationary accounting     $ (11)                
Venezuelan bolívar fuerte                      
Summary Of Significant Accounting Policies [Line Items]                      
Foreign currency exchange rate translation   6.30         6.30     6.30 4.30
Venezuelan bolívar fuerte | SICAD I                      
Summary Of Significant Accounting Policies [Line Items]                      
Foreign currency exchange rate translation           10.70          
Venezuelan bolívar fuerte | SICAD                      
Summary Of Significant Accounting Policies [Line Items]                      
Foreign currency exchange rate translation     12.00 11.50         12.00    
Venezuelan bolívar fuerte | SIMADI                      
Summary Of Significant Accounting Policies [Line Items]                      
Foreign currency exchange rate translation   197.30         197.30        
Argentina, Pesos                      
Summary Of Significant Accounting Policies [Line Items]                      
Devalued percentage against US Dollar 15.00%           7.00%        
Russia, Rubles                      
Summary Of Significant Accounting Policies [Line Items]                      
Devalued percentage against US Dollar       50.00%              
Percentage strengthened against US Dollar             6.00%        
[1] During 2014, we realigned some of our products across product categories and as such, we reclassified the product category net revenues on a basis consistent with the 2015 presentation.