Railcar Leasing and Services Group - Narrative (Details) - Leasing & Services $ in Millions |
Mar. 31, 2025
USD ($)
|
|---|---|
| Wholly-owned subsidiaries | |
| Segment Reporting Information [Line Items] | |
| Net book value of unpledged equipment | $ 445.2 |
| Wholly-owned subsidiaries | Secured Debt [Member] | |
| Segment Reporting Information [Line Items] | |
| Debt Instrument, Collateral Amount | 5,542.1 |
| TRIP Holdings [Member] | Secured Debt [Member] | |
| Segment Reporting Information [Line Items] | |
| Debt Instrument, Collateral Amount | 999.4 |
| RIV 2013 Holdings | Secured Debt [Member] | TRP 2021 Secured Railcar Equipment Notes - RIV 2013 [Member] | |
| Segment Reporting Information [Line Items] | |
| Debt Instrument, Collateral Amount | $ 404.8 |