Income Taxes - Reconciliation of Income Taxes Computed at Statutory U.S. Federal Income Tax Rate to Income Tax Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax expense computed at the statutory U.S. federal income tax rate	$ 148	$ 154	$ 139
Foreign income taxed at different rates	(42)	(14)	(20)
Taxes on repatriation of dividends	(105)	9	4
Remeasurement of estimated tax on unremitted earnings	0	(4)	0
State and local taxes on income, net of U.S. federal income tax benefit	3	11	8
Changes in valuation allowance for tax loss carryforwards and credits	18	13	12
Foreign tax holidays	0	(7)	(6)
Investment and R&D tax credits	(6)	(26)	(10)
Foreign earnings subject to U.S. federal income tax	4	3	7
Adjustment of prior years taxes	0	2	(2)
Tax contingencies	(7)	4	0
Other	(13)	1	(1)
Income tax expense	$ 0	$ 146	$ 131