v3.25.1
Railcar Leasing and Services Group - Lease Portfolio Sales (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Property Subject to or Available for Operating Lease [Line Items]    
Proceeds From Sale Of Property Subject To Or Available For Operating Lease $ 33.7 $ 24.2
Gain (Loss) on Sale of Property, Plant and Equipment, Railroad Transportation Equipment 5.9 2.1
Operating Segments [Member] | Leasing & Services    
Property Subject to or Available for Operating Lease [Line Items]    
Gain (Loss) on Sale of Property, Plant and Equipment, Railroad Transportation Equipment [1] $ 5.9 $ 2.1
Operating Profit Margin 36.40% 35.20%
Operating Segments [Member] | Sales of Leased Railcars [Domain] | Leasing & Services    
Property Subject to or Available for Operating Lease [Line Items]    
Proceeds From Sale Of Property Subject To Or Available For Operating Lease $ 33.7 $ 24.2
Gain (Loss) on Sale of Property, Plant and Equipment, Railroad Transportation Equipment $ 5.9 $ 2.1
Operating Profit Margin 17.50% 8.70%
[1] Significant expense categories and amounts align with the segment-level information that is regularly provided to and reviewed by the CODM. Intersegment expenses are included within the amounts shown.