Other Comprehensive (Loss) Income and Shareholders' Equity - Accumulated Other Comprehensive (Loss) Income Activity (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	$ 5,357
Other comprehensive income (loss) before reclassifications	185	$ 18
Amounts reclassified from accumulated other comprehensive loss	0	1
Total other comprehensive income, net of tax	185	19
Balance at end of period	5,168
Other comprehensive income (loss) before reclassification related to foreign current translation adjustment, loss on intra-equity foreign currency transaction	16	20
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(503)	(192)
Other comprehensive income (loss) before reclassifications	188	22
Amounts reclassified from accumulated other comprehensive loss	0	0
Total other comprehensive income, net of tax	188	22
Balance at end of period	(315)	(170)
Derivative Instrument Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(5)	(8)
Other comprehensive income (loss) before reclassifications	(2)	(5)
Amounts reclassified from accumulated other comprehensive loss	0	1
Total other comprehensive income, net of tax	(2)	(4)
Balance at end of period	(7)	(12)
Available-For-Sale Securities Unrealized Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	6	4
Other comprehensive income (loss) before reclassifications	(1)	1
Amounts reclassified from accumulated other comprehensive loss	0	0
Total other comprehensive income, net of tax	(1)	1
Balance at end of period	5	5
Pension and Postretirement Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	5	0
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive loss	0	0
Total other comprehensive income, net of tax	0	0
Balance at end of period	5	0
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(497)	(196)
Total other comprehensive income, net of tax	185
Balance at end of period	$ (312)	$ (177)