CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 481,447	$ (456,808)
Postretirement benefits:
Amortization of prior service costs/actuarial gain	12	73
Income tax (benefit) expense	(3)	2
Total comprehensive income (loss)	$ 481,456	$ (456,733)