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Commitments and Contingencies (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Loss Contingencies [Line Items]        
Level of risk retained by our captive insurance company (per claim) $ 10.0      
Loss Contingency, Receivable 22.5 $ 22.5    
Loan subject to loss-sharing arrangements, aggregate unpaid principal amount 18,300.0 15,400.0    
Loan loss accrual 29.0 24.6    
Insurance Claims [Member]        
Loss Contingencies [Line Items]        
Loss Contingency Accrual, Provision 1.3 1.6 $ 6.7  
Loss Contingency Accrual, Provision Adjustment (0.1) (10.5) (3.8)  
Loss Contingency Accrual, Payments (0.2) (38.1) (0.4)  
Loss Contingency Accrual $ 2.2 $ 1.2 $ 48.2 $ 38.1