Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income (loss)	$ (147)	$ 154	$ (137)	$ 578
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(11)	0	(187)	7
Net change in derivative financial instruments	(26)	(9)	48	40
Net change in defined benefit pensions and other items	0	0	0	(1)
Total other comprehensive income (loss)	(37)	(9)	(139)	45
Total comprehensive income (loss)	$ (185)	$ 144	$ (276)	$ 623