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Accumulated Other Comprehensive Income (Loss) - Components of 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]      
Accumulated other comprehensive income (loss), Beginning balance $ (1,553) $ (834) $ (4)
Accumulated other comprehensive income (loss) before reclassifications (30) (914) (847)
Amounts reclassified from accumulated other comprehensive income (loss) 131 195 17
Accumulated other comprehensive income (loss), Ending balance (1,452) (1,553) (834)
Currency Translation Adjustments [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income (loss), Beginning balance (1,279) (515) 17
Accumulated other comprehensive income (loss) before reclassifications (97) (764) (543)
Amounts reclassified from accumulated other comprehensive income (loss)     11
Accumulated other comprehensive income (loss), Ending balance (1,376) (1,279) (515)
Derivative Financial Instruments, Net of Tax [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income (loss), Beginning balance (205) (228) 5
Accumulated other comprehensive income (loss) before reclassifications 32 (176) (245)
Amounts reclassified from accumulated other comprehensive income (loss) 134 199 12
Accumulated other comprehensive income (loss), Ending balance (39) (205) (228)
Defined Benefit Plans, Net of Tax [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income (loss), Beginning balance (69) (91) (26)
Accumulated other comprehensive income (loss) before reclassifications 35 26 (59)
Amounts reclassified from accumulated other comprehensive income (loss) (3) (4) (6)
Accumulated other comprehensive income (loss), Ending balance $ (37) $ (69) $ (91)