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Accumulated Other Comprehensive Income (Loss) - Components of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Currency Translation Adjustments     $ 11
Derivative Financial Instruments $ 134 $ 199 12
Defined Benefit Plans (3) (4) (6)
Total 131 195 17
Tax Effect [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Derivative Financial Instruments (52) (77) (5)
Defined Benefit Plans 2 2 2
Total (50) (75) (3)
Revenue [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Derivative Financial Instruments (5) (19) (26)
Total (5) (19) (26)
Cost of Revenue [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Derivative Financial Instruments 191 295 43
Total 191 295 43
Selling, General, and Administrative [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Defined Benefit Plans (5) (6) (8)
Total $ (5) $ (6) (8)
Other Income (Expense), Net [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Currency Translation Adjustments     11
Total     $ 11