v3.25.1
Description of Business (Details)
$ in Millions
3 Months Ended
Mar. 31, 2025
USD ($)
Segment
Mar. 31, 2024
USD ($)
Schedule of Equity Method Investments [Line Items]    
Number of business segments | Segment 3  
Net gain on asset dispositions $ 33.4 $ 36.2
Asset impairments 3.6 0.0
Portfolio investments and capital additions 296.3 378.6
Rail International    
Schedule of Equity Method Investments [Line Items]    
Net gain on asset dispositions 1.3 1.3
Asset impairments 0.0  
Portfolio investments and capital additions $ 62.7 $ 49.9