Consolidated Statement of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 6	$ (111)
Other comprehensive income (loss), net of tax:
Currency translation adjustments	(1)	(12)
Pension and other postretirement benefit plan obligation activity, net of tax	6	3
Other comprehensive income (loss), net of tax	5	(9)
COMPREHENSIVE INCOME (LOSS), NET OF TAX	$ 11	$ (120)