Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4	$ (4)	$ (3)	$ (6)
Other comprehensive income:
Foreign currency translation adjustments	(21)	5	(17)	10
Derivatives
Unrealized loss on derivatives, before tax	(3)	0	(3)	0
Unrealized loss on derivatives, tax portion	0	0	0	0
Unrealized loss on derivatives, net of tax	(3)	0	(3)	0
Defined benefit plans:
Defined benefit plan adjustment, before tax	4	1	4	2
Defined benefit plan adjustment, tax portion	(1)	0	(1)	0
Defined benefit plan adjustment, net of tax	3	1	3	2
Other comprehensive (loss) income	(21)	6	(17)	12
Comprehensive (loss) income	$ (17)	$ 2	$ (20)	$ 6

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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