Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income (loss)	$ 341	$ 11
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(83)	(177)
Net change in derivative financial instruments	129	75
Net change in defined benefit pensions and other items	1	0
Total other comprehensive income (loss)	47	(101)
Total comprehensive income (loss)	$ 388	$ (91)