Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 946	$ (1,451)	$ 480
Other comprehensive income (loss), net of tax
Change in actuarial gain (loss) and other for postretirement and postemployment plans	14	(30)	16
Change in derivative hedges unrecognized gain (loss)	23	(2)	2
Reclassification of de-designated forward interest rate swaps	(28)	0	0
Foreign currency translation adjustment related to sale of U.K. business	0	0	23
Other	0	0	1
Other comprehensive income (loss)	9	(32)	42
Comprehensive income (loss)	$ 955	$ (1,483)	$ 522