Consolidated Statement of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
NET (LOSS) INCOME	$ (5)	$ 201	$ (116)	$ 183
Other comprehensive income (loss), net of tax:
Currency translation adjustments	(4)	1	(16)	4
Pension and other postretirement benefit plan obligation activity, net of tax	9		12	(1)
Other comprehensive income (loss), net of tax	5	1	(4)	3
COMPREHENSIVE INCOME (LOSS), NET OF TAX		$ 202	$ (120)	$ 186