CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 87	$ (826)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(52)	(219)
Defined benefit plans	3	4
Cash flow hedges	(2)	(2)
Other comprehensive income (loss), net of tax	(51)	(217)
Comprehensive income (loss)	36	(1,043)
Less: Comprehensive income (loss) attributable to noncontrolling interests	16	(7)
Comprehensive income (loss) attributable to common shareholders	$ 20	$ (1,036)