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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Statement of Comprehensive Income [Abstract]        
Net income $ 219,587 $ 91,699 $ 740,298 $ 543,411
Defined benefit pension plans        
Amortization of actuarial (gain) loss, net of tax 15 (3) 47 (10)
Effects of Settlements, net of tax 0 0 98 0
Other comprehensive income (loss), net of tax 15 (3) 145 (10)
Comprehensive income $ 219,602 $ 91,696 $ 740,443 $ 543,401