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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 483,656 | $ 857,658 | $ 712,486
Defined benefit pension plans |  |  |
Actuarial gain (loss), net of tax of $(7), $122, and $15, respectively | (22) | 367 | 46
Amortization of actuarial (gain) loss, net of tax of $8, $21, and $(4), respectively | 25 | 62 | (15)
Effects of settlements, net of tax of $—, $32, and $—, respectively | 0 | 98 | 0
Other comprehensive income, net of tax | 3 | 527 | 31
Comprehensive income | $ 483,659 | $ 858,185 | $ 712,517

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