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Derivative Financial Instruments - Summary of Maturities of Notional Amount of Derivatives (Detail)
€ in Millions, ¥ in Millions, ¥ in Millions, £ in Millions, R$ in Millions, $ in Millions
Dec. 31, 2018
USD ($)
Dec. 31, 2018
BRL (R$)
Dec. 31, 2018
EUR (€)
Dec. 31, 2018
GBP (£)
Dec. 31, 2018
JPY (¥)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
USD ($)
Dec. 31, 2017
BRL (R$)
Dec. 31, 2017
EUR (€)
Dec. 31, 2017
GBP (£)
Dec. 31, 2017
JPY (¥)
Swaps US Dollar-Mexican peso [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | $ $ 3,490           $ 2,800        
Swaps Yen-US Dollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | ¥         ¥ 13,000           ¥ 13,000
Swaps Euro-Brazilianreal [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | R$   R$ 300           R$ 450      
Forwards Brazilian Real - US Dollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | R$   2,823                  
Forwards Euro- Brazilian real [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | €     € 150           € 400    
Forwards US Dollar - Brazilian real [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | $ 150           100        
Forwards Euro-US Dollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | €     710           204    
Notional amount, Liabilities | €     950                
Swaps Dollar- Euro [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | $ 2,025           2,092        
Swaps Pound sterling-Euro [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | £       £ 740           £ 740  
Swap Pound sterling-USDollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | £       2,010           £ 2,010  
Forwards US Dollar-Mexican peso [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | $             $ 1,744        
Notional amount, Liabilities | $ 977                    
Put option [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | €     374           374    
Call spread option [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | €     3,000           € 3,000    
2019 [member] | Swaps Euro-Brazilianreal [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | €     300                
2019 [member] | Forwards Brazilian Real - US Dollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | R$   1,680                  
2019 [member] | Forwards Euro- Brazilian real [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | €     150                
2019 [member] | Forwards US Dollar - Brazilian real [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | $ 150                    
2019 [member] | Forwards Euro-US Dollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | €     710                
Notional amount, Liabilities | €     950                
2019 [member] | Swaps Dollar- Euro [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | $ 25                    
2019 [member] | Forwards US Dollar-Mexican peso [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | $ 977                    
2020 [member] | Swap Pound sterling-USDollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | £       550              
2020 [member] | Call spread option [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | €     3,000                
2021 [member] | Forwards Brazilian Real - US Dollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | R$   R$ 1,143                  
2022 [member] | Swaps US Dollar-Mexican peso [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | $ 1,600                    
2023 and Thereafter [member] | Swaps US Dollar-Mexican peso [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | $ 1,890                    
2023 and Thereafter [member] | Swaps Yen-US Dollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Asset | ¥           ¥ 13,000          
2023 and Thereafter [member] | Swaps Dollar- Euro [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | $ $ 2,000                    
2023 and Thereafter [member] | Swaps Pound sterling-Euro [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | £       740              
2023 and Thereafter [member] | Swap Pound sterling-USDollar [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | £       £ 1,460              
2023 and Thereafter [member] | Put option [member]                      
Disclosure of detailed information about financial instruments [line items]                      
Notional amount, Liabilities | €     € 374