Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income (loss)	$ 1,468	$ (2,942)	$ (1,129)
Other comprehensive income (loss), net of income taxes:
Defined benefit and other postretirement plans adjustments	179	(24)	(11)
Other	0	24	3
Other comprehensive income (loss), net of income taxes	179	0	(8)
Comprehensive income (loss)	1,647	(2,942)	(1,137)
Comprehensive income attributable to noncontrolling interest	(11)	(3)	(2)
Comprehensive income (loss) attributable to company shareholders	$ 1,636	$ (2,945)	$ (1,139)