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Supplemental Information (Uzbekistan Asset Purchase) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 25, 2023
Jun. 30, 2023
Jun. 30, 2023
Sep. 30, 2022
Asset Acquisition [Line Items]        
Financing receivables   $ 817.2 $ 817.2 $ 0.0
Natural Gas-To-Syngas Processing Facility        
Asset Acquisition [Line Items]        
Price of acquisition $ 1,000.0      
Sales contract term     15 years  
Financing receivables   800.0 $ 800.0  
Progress payments   $ 600.0