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	$ (127)	$ 23	$ 154
Other comprehensive income (loss) before reclassifications, net of tax	24	(134)	(108)
Amounts reclassified from accumulated other comprehensive (income) loss net of tax	23	(16)	(23)
Other comprehensive income (loss), net of taxes	47	(150)	(131)
Accumulated Other Comprehensive Income (Loss), Ending balance	(80)	(127)	23
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance	(52)	(61)	(62)
Other comprehensive income (loss) before reclassifications, net of tax	(7)	30	6
Amounts reclassified from accumulated other comprehensive (income) loss net of tax	19	(21)	(5)
Other comprehensive income (loss), net of taxes	12	9	1
Accumulated Other Comprehensive Income (Loss), Ending balance	(40)	(52)	(61)
Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance	8	10	6
Other comprehensive income (loss) before reclassifications, net of tax	5	(2)	4
Other comprehensive income (loss), net of taxes	5	(2)	4
Accumulated Other Comprehensive Income (Loss), Ending balance	13	8	10
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance	(75)	84	208
Other comprehensive income (loss) before reclassifications, net of tax	26	(164)	(107)
Amounts reclassified from accumulated other comprehensive (income) loss net of tax	2	5	(17)
Other comprehensive income (loss), net of taxes	28	(159)	(124)
Accumulated Other Comprehensive Income (Loss), Ending balance	(47)	(75)	84
Post - Retirement Benefit Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance	(8)	(10)	2
Other comprehensive income (loss) before reclassifications, net of tax		2	(11)
Amounts reclassified from accumulated other comprehensive (income) loss net of tax	2		(1)
Other comprehensive income (loss), net of taxes	2	2	(12)
Accumulated Other Comprehensive Income (Loss), Ending balance	$ (6)	$ (8)	$ (10)