Derivative Instruments and Fair Value Accounting Derivative Effect on Interest (Details) - Interest Expense [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Interest Rate Swap, Expired, 2018 Secured Railcar Equipment Notes [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]		Interest Income (Expense), Net	Interest Income (Expense), Net
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net		$ 0.2
Interest Rate Swap, Expired, TRIP Holdings Warehouse Loan [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]		Interest Income (Expense), Net	Interest Income (Expense), Net
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net		$ 0.0
Interest Rate Swap, Expired, Tribute Rail Secured Railcar Equipment Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]		Interest Income (Expense), Net	Interest Income (Expense), Net
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net		$ 0.7
Interest Rate Cap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]		Interest Income (Expense), Net	Interest Income (Expense), Net
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net		$ (0.1)
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]		Interest Income (Expense), Net	Interest Income (Expense), Net
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	[1]	$ (10.0)

[1] Based on the fair value of open hedges as of March 31, 2023.