CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 92,138	$ 481,447
Postretirement benefits:
Amortization of prior service costs/actuarial gain	(19)	12
Income tax expense (benefit)	4	(3)
Total comprehensive income	$ 92,123	$ 481,456