Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 966	$ 16	$ 2,270	$ 113
Other comprehensive income (loss), net of tax
Change in actuarial gain (loss) and other for postretirement and postemployment plans	1	16	(3)	13
Change in derivative hedges unrecognized gain (loss)	4	(21)	16	19
Reclassification of de-designated forward interest rate swaps	0	(30)	0	(28)
Other	(1)	0	(1)	0
Other comprehensive income (loss)	4	(35)	12	4
Comprehensive income (loss)	$ 970	$ (19)	$ 2,282	$ 117