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v3.23.3

Debt (Summary of Debt) (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Dec. 31, 2021 | Dec. 18, 2019
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |
Revolving secured line of credit balance outstanding |  | $ 102.1 | $ 30.9 |  |  |
Secured Debt |  | 4,034.2 | 3,756.4 |  |  |
Senior notes balance outstanding |  | 796.0 | 794.5 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | 435.1 | 410.0 | $ 384.7 | $ 410.9 |
Mortgage note | [1] | 8.5 | 8.9 |  |  |
Revolving Secured Line of Credit [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Revolving secured line of credit balance outstanding |  | 102.1 | 30.9 |  |  |
Amount available for borrowing | [2] | $ 307.9 | $ 379.1 |  |  |
Interest rate |  | 7.26% | 6.25% |  |  |
Warehouse Facility II [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 201.0 | $ 0.0 |  |  |
Amount available for borrowing | [2] | 199.0 | 400.0 |  |  |
Loans pledged as collateral |  | 244.9 | 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 9.7 | $ 1.0 |  |  |
Interest rate |  | 7.60% | 0.00% |  |  |
Warehouse Facility IV [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 0.0 | $ 0.0 |  |  |
Amount available for borrowing | [2] | 300.0 | 300.0 |  |  |
Loans pledged as collateral |  | 0.0 | 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 1.0 | $ 1.0 |  |  |
Interest rate |  | 0.00% | 0.00% |  |  |
Warehouse Facility V [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 0.0 | $ 0.0 |  |  |
Amount available for borrowing | [2] | 200.0 | 200.0 |  |  |
Loans pledged as collateral |  | 0.0 | 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 1.0 | $ 1.0 |  |  |
Interest rate |  | 0.00% | 0.00% |  |  |
Warehouse Facility VI [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 0.0 | $ 0.0 |  |  |
Amount available for borrowing | [2] | 75.0 | 75.0 |  |  |
Loans pledged as collateral |  | 0.0 | 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 0.0 | $ 0.0 |  |  |
Interest rate |  | 0.00% | 0.00% |  |  |
Warehouse Facility VIII [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 0.0 | $ 0.0 |  |  |
Amount available for borrowing | [2] | 200.0 | 200.0 |  |  |
Loans pledged as collateral |  | 0.0 | 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 0.0 | $ 0.0 |  |  |
Interest rate |  | 0.00% | 0.00% |  |  |
Term ABS 2019-2 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 500.0 | $ 500.0 |  |  |
Loans pledged as collateral |  | 554.8 | 627.5 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 45.7 | $ 51.0 |  |  |
Interest rate |  | 5.15% | 5.15% |  |  |
Term ABS 2019-3 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 0.0 | $ 64.4 |  |  |
Loans pledged as collateral |  | 0.0 | 200.9 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 0.0 | $ 24.5 |  |  |
Interest rate |  | 0.00% | 3.00% |  |  |
Term ABS 2020-1 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 0.0 | $ 144.6 |  |  |
Loans pledged as collateral |  | 0.0 | 362.5 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 0.0 | $ 38.8 |  |  |
Interest rate |  | 0.00% | 2.51% |  |  |
Term ABS 2020-2 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 62.9 | $ 307.0 |  |  |
Loans pledged as collateral |  | 289.1 | 452.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 34.2 | $ 43.9 |  |  |
Interest rate |  | 2.70% | 1.81% |  |  |
Term ABS 2020-3 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 196.1 | $ 520.7 |  |  |
Loans pledged as collateral |  | 467.1 | 655.1 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 45.4 | $ 53.9 |  |  |
Interest rate |  | 1.86% | 1.47% |  |  |
Term ABS 2021-1 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 100.0 | $ 100.0 |  |  |
Loans pledged as collateral |  | 112.7 | 115.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 8.9 | $ 8.5 |  |  |
Interest rate |  | 7.53% | 6.52% |  |  |
Term ABS 2021-2 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 269.0 | $ 500.0 |  |  |
Loans pledged as collateral |  | 460.3 | 572.9 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 39.7 | $ 44.5 |  |  |
Interest rate |  | 1.25% | 1.12% |  |  |
Term ABS 2021-3 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 338.9 | $ 450.0 |  |  |
Loans pledged as collateral |  | 438.0 | 519.9 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 36.4 | $ 38.8 |  |  |
Interest rate |  | 1.19% | 1.14% |  |  |
Term ABS 2021-4 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 250.1 | $ 250.1 |  |  |
Loans pledged as collateral |  | 267.9 | 278.5 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 22.0 | $ 21.8 |  |  |
Interest rate |  | 1.44% | 1.44% |  |  |
Term ABS 2022-1 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 350.0 | $ 350.0 |  |  |
Loans pledged as collateral |  | 379.1 | 434.7 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 26.6 | $ 27.7 |  |  |
Interest rate |  | 5.03% | 5.03% |  |  |
Term ABS 2022-2 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 200.0 | $ 200.0 |  |  |
Loans pledged as collateral |  | 214.4 | 229.3 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 15.0 | $ 25.6 |  |  |
Interest rate |  | 7.76% | 6.65% |  |  |
Term ABS 2022-3 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 389.9 | $ 389.9 |  |  |
Loans pledged as collateral |  | 423.9 | 429.2 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 29.3 | $ 27.6 |  |  |
Interest rate |  | 7.68% | 7.68% |  |  |
Term ABS 2023-1 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 400.0 |  |  |  |
Loans pledged as collateral |  | 629.9 | $ 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 39.4 |  |  |  |
Interest rate |  | 6.92% |  |  |  |
Term ABS 2023-2 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 400.0 |  |  |  |
Loans pledged as collateral |  | 694.6 | 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 41.9 |  |  |  |
Interest rate |  | 6.39% |  |  |  |
Term ABS 2023-3 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured Debt |  | $ 400.0 |  |  |  |
Loans pledged as collateral |  | 604.8 | 0.0 |  |  |
Restricted cash and cash equivalents pledged as collateral |  | $ 37.2 |  |  |  |
Interest rate |  | 6.86% |  |  |  |
2024 Senior Notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes balance outstanding |  | $ 400.0 | $ 400.0 |  |  | $ 400.0
Interest rate |  | 5.125% | 5.125% |  |  | 5.125%
2026 Senior Notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Senior notes balance outstanding |  | $ 400.0 | $ 400.0 |  |  |
Interest rate |  | 6.625% | 6.625% |  |  |
Mortgages [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate |  | 6.87% | 5.46% |  |  |
Mortgage note |  | $ 8.5 | $ 8.9 |  |  |
[1] | Measured at amortized cost with fair value disclosed.
[2] | Availability may be limited by the amount of assets pledged as collateral.

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