Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income (loss)	$ (155)	$ 126	$ (292)	$ 704
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	84	(2)	(104)	4
Net change in derivative financial instruments	(64)	62	(15)	102
Net change in defined benefit pensions and other items	0	0	0	(1)
Total other comprehensive income (loss)	20	60	(119)	105
Total comprehensive income (loss)	$ (135)	$ 186	$ (411)	$ 809