Stockholders' Equity - Summary of Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ (668)
Other comprehensive income (loss) before reclassifications	23
Amounts reclassified from accumulated other comprehensive income (loss)	(1)
Total before tax	22
Tax benefit (expense)	1
Total other comprehensive income (loss), net of taxes	23	$ (110)
Ending balance	(645)
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	1
Other comprehensive income (loss) before reclassifications	(2)
Total before tax	(2)
Total other comprehensive income (loss), net of taxes	(2)
Ending balance	(1)
Net Investment Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	(2)
Total before tax	(2)
Tax benefit (expense)	1
Total other comprehensive income (loss), net of taxes	(1)
Ending balance	(1)
Defined Benefit Pension and Postretirement Benefit Plans [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(79)
Amounts reclassified from accumulated other comprehensive income (loss)	1
Total before tax	1
Total other comprehensive income (loss), net of taxes	1
Ending balance	(78)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(590)
Other comprehensive income (loss) before reclassifications	25
Total before tax	25
Total other comprehensive income (loss), net of taxes	25
Ending balance	$ (565)