v3.26.3
Derivative Instruments and Fair Value Accounting Derivative Instruments (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Derivative [Line Items]                    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 1,130.8 $ 1,250.4 $ 1,130.8 $ 1,250.4 $ 1,145.7 $ 1,145.7 $ 1,145.3 $ 1,257.8 $ 1,299.7 $ 1,307.2
Unrealized gains/(losses) on derivative financial instruments                    
Derivative [Line Items]                    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 19.4   19.4       $ (2.8)      
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]                    
Derivative [Line Items]                    
Derivative Asset 26.4   26.4              
Derivative Liability 0.0   0.0              
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net [1] (5.3)   (5.3)              
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:InterestIncomeExpenseNet                    
Derivative [Line Items]                    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax 0.0 (3.1) 0.2 (7.6)            
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Unrealized gains/(losses) on derivative financial instruments                    
Derivative [Line Items]                    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (27.0)   (27.0)              
Designated as Hedging Instrument [Member] | Open Interest Rate Swaps                    
Derivative [Line Items]                    
Derivative, Notional Amount 757.6   757.6              
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]                    
Derivative [Line Items]                    
Derivative Asset 0.0   0.0              
Derivative Liability 3.2   3.2              
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months [1] (0.6)   (0.6)              
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold                    
Derivative [Line Items]                    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax (2.3) (0.9) (7.8) 5.8            
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Unrealized gains/(losses) on derivative financial instruments                    
Derivative [Line Items]                    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1.7   1.7              
Not Designated as Hedging Instrument | TILC Warehouse Back to Back Swap Agreements - Open                    
Derivative [Line Items]                    
Derivative Asset [2] 5.1   5.1              
Derivative Liability [2] 0.0   0.0              
Not Designated as Hedging Instrument | TILC Warehouse Back to Back Swap Agreements - Open | Location, Statement of Income, Balance [Axis]: us-gaap:OtherOperatingIncomeExpenseNet                    
Derivative [Line Items]                    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax [2] (0.5) 2.0 (3.9) 5.9            
Not Designated as Hedging Instrument | TILC Back to Back Swap Agreements - Open                    
Derivative [Line Items]                    
Derivative Asset [2] 0.0   0.0              
Derivative Liability [2] 5.1   5.1              
Not Designated as Hedging Instrument | TILC Back to Back Swap Agreements - Open | Location, Statement of Income, Balance [Axis]: us-gaap:OtherOperatingIncomeExpenseNet                    
Derivative [Line Items]                    
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax [2] $ 0.5 $ (2.0) $ 3.9 $ (5.9)            
[1] Based on the fair value of open hedges as of September 30, 2026.
[2] Comprised of back-to-back interest rate caps entered into with the same counterparty in connection with our risk management objectives.