Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income (loss)	$ 240	$ (19)	$ 641	$ (2,715)
Other comprehensive income (loss), net of income taxes	0	2	2	22
Comprehensive income (loss)	240	(17)	643	(2,693)
Comprehensive (income) loss attributable to noncontrolling interest	(4)	1	(8)	4
Comprehensive income (loss) attributable to company shareholders	$ 236	$ (16)	$ 635	$ (2,689)