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Contractual Guarantees, Litigation, Investigations, and Insurance (Details)
$ in Millions, $ in Millions
12 Months Ended
Apr. 12, 2022
USD ($)
Apr. 12, 2022
AUD ($)
Sep. 30, 2022
USD ($)
Sep. 28, 2012
MW
Loss Contingencies [Line Items]        
Recorded third-party environmental recoveries receivable     $ 27.0  
JKC Australia L N G Pty Limited        
Loss Contingencies [Line Items]        
Litigation settlement amount awarded to other party $ 475.0      
General Electric And G E Electrical International Incorporation        
Loss Contingencies [Line Items]        
Plant capacity (in MW) | MW       360
Litigation settlement amount awarded to other party   $ 640    
Gain (loss) related to settlement     $ 91.3  
UGL Infrastructure Pty Limited | Consortium Agreement        
Loss Contingencies [Line Items]        
Ownership percentage       50.00%