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Summary of Significant Accounting Policies - Additional Information (Details)
$ in Millions
3 Months Ended
Jan. 19, 2024
USD ($)
Dec. 31, 2024
USD ($)
Segment
Dec. 31, 2023
USD ($)
Sep. 30, 2024
USD ($)
Accounting Policies [Line Items]        
Number of reportable segments | Segment   3    
Restricted cash   $ 30.4 $ 20.5 $ 30.4
MoGas Pipeline [Member]        
Accounting Policies [Line Items]        
Payments to acquire businesses, gross $ 176.1      
Other Income [Member]        
Accounting Policies [Line Items]        
Gain on discontinuation of cash flow hdge due to forecasted transaction probable of not occurring     $ 8.2