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Debt - Short Term Borrowings (Parenthetical) (Detail)
12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2016
EUR (€)
Dec. 31, 2015
USD ($)
Short-term Debt [Line Items]      
Increase in restricted cash deposits $ 194,000,000    
Maximum borrowing capacity 2,750,000,000    
Short-term borrowings $ 623,000,000   $ 25,000,000
Bank Indebtedness [Member]      
Short-term Debt [Line Items]      
Covenant percentage USD cash deposit to outstanding euro balance 105.00%    
Gross amount outstanding under the credit facility $ 185,000,000 € 175,000,000  
Increase in restricted cash deposits 194,000,000    
Short-term borrowings 8,000,000   $ 25,000,000
U.S. Commercial Paper Notes [Member]      
Short-term Debt [Line Items]      
Maximum borrowing capacity 500,000,000    
Short-term borrowings $ 295,000,000    
Weighted-average interest rate on notes outstanding 1.04% 1.04%  
Debt maturity period Maturities generally less than three months.    
Euro-Commercial Paper Notes [Member]      
Short-term Debt [Line Items]      
Maximum borrowing capacity | €   € 500,000,000  
Short-term borrowings $ 320,000,000 € 304,000,000  
Weighted-average interest rate on notes outstanding (0.07%) (0.07%)  
Debt maturity period Maturities generally less than three months.    
Debt issuance description Under the euro-Program, the Company may issue euro-commercial paper notes [the "euro notes"] up to a maximum aggregate amount of €500 million or its equivalent in alternative currencies.    
Prepaid Expenses and Other [Member] | Bank Indebtedness [Member]      
Short-term Debt [Line Items]      
Net cash deposit $ 9,000,000