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Debt (Components of Long-Term Debt) (Detail) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Long-term Line of Credit $ 340 $ 0
Debt discount (8) (10)
Other debt, primarily foreign instruments 163 107
Total other long-term debts 3,062 2,690
Less: short-term debt, including current maturities of long-term debt (138) (127)
Total long-term debt 2,924 2,563
Tranche B Term Loan [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 691 698
Tranche C Term Loan [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross $ 1,876 $ 1,895