Consolidated Statement of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 16	$ (5)	$ 22	$ (116)
Other comprehensive income (loss), net of tax:
Currency translation adjustments	4	(4)	3	(16)
Pension and other postretirement benefit plan obligation activity, net of tax	8	9	14	12
Other comprehensive income (loss), net of tax	12	$ 5	17	(4)
COMPREHENSIVE INCOME (LOSS), NET OF TAX	$ 28		$ 39	$ (120)