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Asset Impairments and Assets Held for Sale (Details)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
AircraftEngines
Sep. 30, 2022
AircraftEngines
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Asset Impairment [Line Items]        
Asset Impairment Charges $ 1.2   $ 0.0  
Total 16.2     $ 40.0
Accumulated Foreign Currency Adjustment Attributable to Rail International        
Asset Impairment [Line Items]        
Asset Impairment Charges       1.2
Portfolio Management        
Asset Impairment [Line Items]        
Asset Impairment Charges 1.2     34.3
Total $ 15.2     25.1
Number of Specialized Gas Vessels Sold | AircraftEngines 1 2    
Rail North America        
Asset Impairment [Line Items]        
Asset Impairment Charges $ 0.0      
Total 1.0     1.2
Rail International        
Asset Impairment [Line Items]        
Asset Impairment Charges 0.0     14.6
Total 0.0     $ 13.7
Gain (Loss) on Disposition of Business $ 0.3