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Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Payables And Accruals [Abstract] |  |
Salaries and wages | $ 90,023 | $ 72,498
Employee benefits | 264,912 | 293,768
Self-insurance liability | 23,737 | 32,447
Project cost accruals | 127,970 | 164,243
Other accrued expenses | 92,447 | 87,797
Total accrued expenses and other current liabilities | $ 599,089 | $ 650,753

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