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Auto Loans Receivable - Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | $ 174.2 |  | $ 285.4
Auto loans receivable, Originated in year before current year | 250.3 |  | 84.6
Auto loans receivable, Originated two years before current year | 74.5 |  | 51.7
Auto loans receivable, Originated three years before current year | 44.3 |  | 17.3
Auto loans receivable, Originated four years before current year | 14.3 |  | 10.6
Auto loans receivable, Originated five years or more before current year | 8.9 |  | 1.6
Total auto loans receivable | 566.5 |  | 451.2
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Current-period gross write-offs, 2024 origination | 0.1 |  |
Current-period gross write-offs, 2023 origination | 5.9 |  |
Current-period gross write-offs, 2022 origination | 4.3 |  |
Current-period gross write-offs, 2021 origination | 2.7 |  |
Current-period gross write-offs, 2020 origination | 0.8 |  |
Current-period gross write-offs, Prior to 2020 origination | 0.2 |  |
Current-period gross write-offs | 14.0 | $ 16.0 |
Palladium |  |  |
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | 15.8 |  |
Auto loans receivable, Originated in year before current year | 0.0 |  |
Auto loans receivable, Originated two years before current year | 0.0 |  |
Auto loans receivable, Originated three years before current year | 0.0 |  |
Auto loans receivable, Originated four years before current year | 0.0 |  |
Auto loans receivable, Originated five years or more before current year | 0.0 |  |
Total auto loans receivable | 15.8 |  |
Rhodium |  |  |
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | 27.6 |  | 27.6
Auto loans receivable, Originated in year before current year | 23.1 |  | 0.1
Auto loans receivable, Originated two years before current year | 0.1 |  | 0.0
Auto loans receivable, Originated three years before current year | 0.0 |  | 0.0
Auto loans receivable, Originated four years before current year | 0.0 |  | 0.0
Auto loans receivable, Originated five years or more before current year | 0.0 |  | 0.0
Total auto loans receivable | 50.8 |  | 27.7
Platinum |  |  |
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | 112.7 |  | 136.3
Auto loans receivable, Originated in year before current year | 118.5 |  | 14.7
Auto loans receivable, Originated two years before current year | 13.2 |  | 8.2
Auto loans receivable, Originated three years before current year | 7.2 |  | 3.3
Auto loans receivable, Originated four years before current year | 2.8 |  | 3.1
Auto loans receivable, Originated five years or more before current year | 2.6 |  | 0.5
Total auto loans receivable | 257.0 |  | 166.1
Gold |  |  |
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | 17.9 |  | 64.3
Auto loans receivable, Originated in year before current year | 57.6 |  | 35.9
Auto loans receivable, Originated two years before current year | 31.8 |  | 18.5
Auto loans receivable, Originated three years before current year | 16.1 |  | 6.8
Auto loans receivable, Originated four years before current year | 5.6 |  | 4.5
Auto loans receivable, Originated five years or more before current year | 4.0 |  | 0.8
Total auto loans receivable | 133.0 |  | 130.8
Silver |  |  |
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | 0.2 |  | 50.2
Auto loans receivable, Originated in year before current year | 45.0 |  | 33.0
Auto loans receivable, Originated two years before current year | 28.7 |  | 16.2
Auto loans receivable, Originated three years before current year | 13.7 |  | 5.2
Auto loans receivable, Originated four years before current year | 4.2 |  | 2.8
Auto loans receivable, Originated five years or more before current year | 2.1 |  | 0.3
Total auto loans receivable | 93.9 |  | 107.7
Bronze |  |  |
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | 0.0 |  | 6.7
Auto loans receivable, Originated in year before current year | 5.9 |  | 0.7
Auto loans receivable, Originated two years before current year | 0.6 |  | 6.0
Auto loans receivable, Originated three years before current year | 5.0 |  | 1.5
Auto loans receivable, Originated four years before current year | 1.3 |  | 0.1
Auto loans receivable, Originated five years or more before current year | 0.1 |  | 0.0
Total auto loans receivable | 12.9 |  | 15.0
Copper |  |  |
Auto Loans Receivable |  |  |
Auto loans receivable, Originated in current year | 0.0 |  | 0.3
Auto loans receivable, Originated in year before current year | 0.2 |  | 0.2
Auto loans receivable, Originated two years before current year | 0.1 |  | 2.8
Auto loans receivable, Originated three years before current year | 2.3 |  | 0.5
Auto loans receivable, Originated four years before current year | 0.4 |  | 0.1
Auto loans receivable, Originated five years or more before current year | 0.1 |  | 0.0
Total auto loans receivable | $ 3.1 |  | $ 3.9

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