Consolidated Statement Of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income	$ 111	$ 80
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Currency translation adjustments	10	30
Hedging gains and losses	(8)	(4)
Defined benefit plans	7	5
Other comprehensive income	9	31
Total comprehensive income	120	111
Less: Comprehensive income attributable to noncontrolling interests	(2)	(7)
Less: Comprehensive (income) loss attributable to redeemable noncontrolling interests	(2)	1
Comprehensive income attributable to the parent company	$ 116	$ 105