Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 817	$ 184	$ 3,087	$ 297
Other comprehensive income, net of tax
Change in actuarial gain (loss) and other for postretirement and postemployment plans	(3)	4	(6)	17
Change in derivative hedges unrecognized gain	7	1	23	20
Reclassification of de-designated forward interest rate swaps	0	0	0	(28)
Other	0	0	(1)	0
Other comprehensive income	4	5	16	9
Comprehensive income	$ 821	$ 189	$ 3,103	$ 306