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Acquisitions - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
May 31, 2022
Jul. 30, 2021
Jul. 06, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Business Acquisition [Line Items]                
Amortization of intangible assets       $ 19,100 $ 27,000 $ 58,900 $ 76,100  
Revenues       1,134,370 956,050 3,092,160 2,710,103  
Goodwill       1,661,107   1,661,107   $ 1,412,690
Xator Corporation                
Business Acquisition [Line Items]                
Percentage of ownership interest acquired 100.00%              
Cash paid to acquire $ 388,300              
Borrowed under credit agreement to partially fund the acquisition 300,000              
Amortization of intangible assets       4,900   6,600    
Revenues       70,400   91,200    
Goodwill $ 252,994              
BlackHorse Solutions, Inc.                
Business Acquisition [Line Items]                
Percentage of ownership interest acquired     100.00%          
Cash paid to acquire     $ 205,000          
Amortization of intangible assets       3,500   10,600    
Revenues       $ 22,600 $ 16,700 $ 66,300 $ 16,700  
Goodwill deductible for tax purposes     10,600          
Goodwill     $ 143,086          
Echo Ridge LLC                
Business Acquisition [Line Items]                
Percentage of ownership interest acquired   100.00%            
Cash paid to acquire   $ 9,000            
Goodwill   $ 7,200