CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 45	$ 450	$ 2,215	$ (1,052)
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)		$ 45	$ 450	$ 2,200	$ (1,052)

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