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Segments Information - Summary of Business Segment Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Total revenues $ 4,195,272 $ 3,660,771 $ 3,918,946
Federal Solution Segment      
Segment Reporting Information [Line Items]      
Total revenues 2,212,987 1,888,050 1,911,910
Critical Infrastructure      
Segment Reporting Information [Line Items]      
Total revenues $ 1,982,285 $ 1,772,721 $ 2,007,036