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Railcar Leasing and Services Group - Lease Portfolio Sales (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |  |
Proceeds From Sale Of Property Subject To Or Available For Operating Lease |  |  |  | $ 63.0 | $ 186.7
Gain (Loss) on Sale of Property, Plant and Equipment, Railroad Transportation Equipment |  | $ 7.8 | $ 22.7 | 13.7 | 24.8
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] | $ 7.8 | $ 22.7 | $ 13.7 | $ 24.8
Operating Profit Margin |  | 39.20% | 45.50% | 37.80% | 40.30%
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 |  | $ 29.3 | $ 162.5 | $ 63.0 | $ 186.7
Gain (Loss) on Sale of Property, Plant and Equipment, Railroad Transportation Equipment |  | $ 7.8 | $ 22.7 | $ 13.7 | $ 24.8
Operating Profit Margin |  | 26.60% | 14.00% | 21.70% | 13.30%
[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.

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