CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,535)	$ 1,939
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	0	1
Net actuarial gain (loss) incurred in period	2	(2)
Net tax loss attributable to pension termination	0	(14)
Total change in value of pension and postretirement liabilities	2	(15)
Comprehensive income (loss)	$ (1,533)	$ 1,924