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Equity Method Investments - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Undistributed earnings of equity method investees $ 31,100,000 $ 41,300,000  
Reimbursable costs included in revenues of equity method investees 5,126,600,000 4,453,700,000 $ 4,102,900,000
Provision for income taxes 75,079,000 75,757,000 $ 89,425,000
Accounts receivable – other 16,339,000 26,894,000  
Investees      
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Provision for income taxes 0    
Related Party      
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Accounts receivable – other $ 1,100,000 $ 1,500,000