Consolidated Statement Of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income	$ 73	$ 55	$ 153	$ 103
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Currency translation adjustments	(31)	(24)	(1)	6
Hedging gains and losses	5	(13)	1	(10)
Investment and other gains and losses		1		3
Defined benefit plans	5	6	10	13
Other comprehensive income (loss)	(21)	(30)	10	12
Total comprehensive income	52	25	163	115
Less: Comprehensive income attributable to noncontrolling interests	(6)	(2)	(13)	(6)
Less: Comprehensive loss attributable to redeemable noncontrolling interests			1
Comprehensive income attributable to the parent company	$ 46	$ 23	$ 151	$ 109