v3.25.2
Debt (Schedule of Principal Debt Outstanding) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Principal Outstanding $ 6,508.5 $ 6,391.9
Unamortized Debt Issuance Costs (36.6) (37.7)
Unamortized Discount 0.7 1.3
Carrying Amount 6,471.2 6,352.9
Revolving Secured Line of Credit [Member]    
Debt Instrument [Line Items]    
Principal Outstanding [1] 1.5 0.1
Unamortized Debt Issuance Costs [1] 0.0 0.0
Unamortized Discount [1] 0.0 0.0
Carrying Amount [1] 1.5 0.1
Secured Financings [Member]    
Debt Instrument [Line Items]    
Principal Outstanding [2] 5,407.0 5,391.8
Unamortized Debt Issuance Costs [2] (23.0) (29.0)
Unamortized Discount [2] 0.7 1.3
Carrying Amount [2] 5,383.3 5,361.5
Senior Notes [Member]    
Debt Instrument [Line Items]    
Principal Outstanding 1,100.0 1,000.0
Unamortized Debt Issuance Costs (13.6) (8.7)
Unamortized Discount 0.0 0.0
Carrying Amount 1,086.4 991.3
Other Assets [Member]    
Debt Instrument [Line Items]    
Unamortized Debt Issuance Costs $ (5.4) $ (4.4)
[1] Excludes deferred debt issuance costs of $5.4 million and $4.4 million as of June 30, 2025 and December 31, 2024, respectively, which are included in other assets.
[2] Warehouse facilities and Term ABS financings.