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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	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	$ 143,068	$ 219,587	$ 386,121	$ 740,298
Defined benefit pension plans
Amortization of actuarial loss, net of tax of $2, $6, $6, and $16, respectively	6	15	19	47
Effect of settlements, net of tax of $—, $—, $—, and $32, respectively	0	0	0	98
Other comprehensive income, net of tax	6	15	19	145
Comprehensive income	$ 143,074	$ 219,602	$ 386,140	$ 740,443

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