CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 231	$ 1,173	$ 2,170	$ (1,502)
Change in value of pension and other postretirement liabilities:
Amortization of prior service cost and net gain, including gain on settlements and curtailments included in net periodic pension cost	[1]	0	0	1	0
Net actuarial loss incurred in period		0	0	(2)	0
Net tax loss attributable to pension termination		0	0	(14)	0
Total change in value of pension and postretirement liabilities		0	0	(15)	0
Comprehensive income (loss)		$ 231	$ 1,173	$ 2,155	$ (1,502)

[1] Settlement adjustment was less than $1 million for the three and six months ended June 30, 2022.