v3.25.1
Derivative Instruments and Fair Value Accounting Derivative Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 1,299.7 $ 1,307.2 $ 1,288.5 $ 1,275.5
Designated as Hedging Instrument [Member] | Interest Rate Swap, Expired, 2018 Secured Railcar Equipment Notes [Member]        
Derivative [Line Items]        
Derivative, Notional Amount $ 249.3      
Derivative, Average Fixed Interest Rate [1] 4.41%      
Derivative Asset $ 0.0      
Designated as Hedging Instrument [Member] | Interest Rate Swap, Expired, Tribute Rail Secured Railcar Equipment Notes        
Derivative [Line Items]        
Derivative, Notional Amount $ 256.0      
Derivative, Average Fixed Interest Rate [1] 2.86%      
Derivative Asset $ 0.0      
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member]        
Derivative [Line Items]        
Derivative, Notional Amount $ 169.3      
Derivative, Cap Interest Rate 3.00%      
Derivative Asset $ 0.0      
Designated as Hedging Instrument [Member] | Interest Rate Swap, 2017 Promissory Notes        
Derivative [Line Items]        
Derivative, Notional Amount $ 374.8      
Derivative, Average Fixed Interest Rate [1] 2.31%      
Derivative Asset $ 4.3      
Designated as Hedging Instrument [Member] | Interest Rate Swap, TRL-2023 Term Loan        
Derivative [Line Items]        
Derivative, Notional Amount $ 256.5      
Derivative, Average Fixed Interest Rate [1] 3.79%      
Derivative Liability $ (1.3)      
Designated as Hedging Instrument [Member] | Forward Interest Rate Swap, TILC        
Derivative [Line Items]        
Derivative, Notional Amount $ 280.0      
Derivative, Average Fixed Interest Rate [1] 3.72%      
Derivative Asset $ 0.9      
Derivative Liability (2.1)      
Derivative Assets (Liabilities), at Fair Value, Net [2] (1.2)      
Unrealized gains/(losses) on derivative financial instruments        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (3.0) $ (3.0)    
Unrealized gains/(losses) on derivative financial instruments | Designated as Hedging Instrument [Member] | Interest Rate Swap, Expired, 2018 Secured Railcar Equipment Notes [Member]        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0.1      
Unrealized gains/(losses) on derivative financial instruments | Designated as Hedging Instrument [Member] | Interest Rate Swap, Expired, Tribute Rail Secured Railcar Equipment Notes        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0.1      
Unrealized gains/(losses) on derivative financial instruments | Designated as Hedging Instrument [Member] | Interest Rate Cap [Member]        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (0.1)      
Unrealized gains/(losses) on derivative financial instruments | Designated as Hedging Instrument [Member] | Interest Rate Swap, 2017 Promissory Notes        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (4.0)      
Unrealized gains/(losses) on derivative financial instruments | Designated as Hedging Instrument [Member] | Interest Rate Swap, TRL-2023 Term Loan        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1.3      
Unrealized gains/(losses) on derivative financial instruments | Designated as Hedging Instrument [Member] | Forward Interest Rate Swap, TILC        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1.2      
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Designated as Hedging Instrument [Member] | Interest Rate Swap, Expired, 2018 Secured Railcar Equipment Notes [Member]        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0.0      
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Designated as Hedging Instrument [Member] | Interest Rate Swap, Expired, Tribute Rail Secured Railcar Equipment Notes        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0.1      
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Designated as Hedging Instrument [Member] | Interest Rate Cap [Member]        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0.0      
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Designated as Hedging Instrument [Member] | Interest Rate Swap, 2017 Promissory Notes        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0.0      
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Designated as Hedging Instrument [Member] | Interest Rate Swap, TRL-2023 Term Loan        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0.0      
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Designated as Hedging Instrument [Member] | Forward Interest Rate Swap, TILC        
Derivative [Line Items]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 0.0      
[1] Weighted average fixed interest rate, except for the interest rate cap on the 2017 promissory notes
[2] We entered into forward starting interest rate swaps to hedge a portion of the risk of potential interest rate increases in anticipation of a debt refinancing, which was completed on April 30, 2025. See Note 8 for further information. The balance at March 31, 2025 is comprised of a derivative liability of $2.1 million with one counterparty and a derivative asset of $0.9 million with a different counterparty.