Income Taxes - Comparative Analysis of Components of Income Tax Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
U.S. federal	$ (9)	$ 64	$ 38
State and local	4	5	3
Foreign	85	83	92
Total current income tax expenses	80	152	133
Deferred
U.S. federal	(91)	(1)	2
State and local	(1)	1	7
Foreign	12	(6)	(11)
Total deferred income tax expenses	(80)	(6)	(2)
Income tax expense	$ 0	$ 146	$ 131