Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 302	$ 165	$ 361
Other comprehensive income (loss), net of tax
Currency translation adjustments, net of tax of $(6), $(8) and $33, respectively	12	(81)	110
Available-for-sale securities:
Net unrealized gains (losses) on available-for-sale securities, net of tax of $0, $0, and $(1), respectively	0	0	1
Cash flow hedges:
Net unrealized holding gains (losses), net of tax of $7, $0, and $0, respectively	(20)	(2)	1
Reclassification of cash flow hedges to earnings, net of tax of $1, $1, and $(2), respectively	(3)	(2)	2
Minimum pension liability adjustment:
Pension and post-retirement benefits, net of tax of $6, $6, and $(4), respectively	(20)	(23)	11
Reclassification of pension and post-retirement benefits to earnings, net of tax of $(2), $(2), and $(3), respectively	6	5	5
Other comprehensive income (loss)	(25)	(103)	130
Total comprehensive income	$ 277	$ 62	$ 491