v3.25.1
Investments, Equity Method and Joint Ventures (Details) - USD ($)
$ in Thousands
6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Sep. 30, 2024
Schedule of Equity Method Investments [Line Items]      
Payments to Acquire Investments $ 44,900 $ 380  
Equity Method Investments 44,900   $ 0
CB&I      
Schedule of Equity Method Investments [Line Items]      
Payments to Acquire Investments $ 44,900    
Equity Method Investment, Ownership Percentage 12.50%    
Equity Method Investments $ 44,900    
Income (Loss) from Equity Method Investments $ 0