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Receivables, Contract Liabilities and Performance Obligations - Gross Contract Assets by Internal Risk Ratings (Detail) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]    
Contract assets, net of allowances $ 208,394 $ 272,287
Low risk    
Disaggregation of Revenue [Line Items]    
Contract assets, net of allowances 38,314  
Moderate risk    
Disaggregation of Revenue [Line Items]    
Contract assets, net of allowances 46,854  
High risk    
Disaggregation of Revenue [Line Items]    
Contract assets, net of allowances $ 123,226