| Schedule of Debt [Table Text Block] |
| | | As of | |
| | | March 31, 2025 | | | December 31, 2024 | |
| Revolving credit facilities at a weighted average interest rate equal to 7.1% as of March 31, 2025 (7.0% as of December 31, 2024) secured by the financial and operating assets of CAR and/or certain receivables and restricted cash with a combined aggregate carrying amount of $2,792.5 million as of March 31, 2025 ($2,723.5 million as of December 31, 2024) | | | | | | | | |
| Revolving credit facility, not to exceed $65.0 million (expiring December 1, 2026) (1) (2) (3) | | $ | 31.6 | | | $ | 36.1 | |
| Revolving credit facility, not to exceed $50.0 million (expiring October 30, 2026) (2) (3) (4) (5) | | | 49.8 | | | | 49.8 | |
| Revolving credit facility, not to exceed $100.0 million (expiring December 15, 2025) (2) (3) (4) (5) (6) | | | — | | | | — | |
| Revolving credit facility, not to exceed $75.0 million (expiring July 20, 2026) (2) (3) (4) (5) | | | 66.8 | | | | 74.6 | |
| Revolving credit facility, not to exceed $40.0 million (expiring April 7, 2028) (2) (3) (4) (5) | | | 12.5 | | | | 14.5 | |
| Revolving credit facility, not to exceed $50.0 million (expiring July 15, 2027) (2) (3) (4) (5) | | | 49.7 | | | | 50.0 | |
| Revolving credit facility, not to exceed $300.0 million (expiring December 15, 2026) (3) (4) (5) (6) | | | 300.0 | | | | 300.0 | |
| Revolving credit facility, not to exceed $233.3 million (expiring May 15, 2026) (3) (4) (5) (6) | | | 233.3 | | | | 283.3 | |
| Revolving credit facility, not to exceed $325.0 million (expiring November 15, 2028) (2) (3) (4) (5) (6) | | 325.0 | | | | 325.0 | |
| Revolving credit facility, not to exceed $158.3 million (expiring August 5, 2026) (2) (3) (4) (5) (6) | | | — | | | | — | |
| Revolving credit facility, not to exceed $100.0 million (expiring March 15, 2027) (3) (4) (5) (6) | | | 100.0 | | | | 100.0 | |
| Revolving credit facility, not to exceed $25.0 million (expiring August 30, 2027) (2) (3) (4) (5) | | | 12.5 | | | | 12.5 | |
| Revolving credit facility, not to exceed $300.0 million (expiring February 15, 2028) (3) (4) (5) (6) | | | 300.0 | | | | 300.0 | |
| Revolving credit facility, not to exceed $150.0 million (expiring May 17, 2027) (3) (4) (5) (6) | | | 150.0 | | | | 150.0 | |
| Revolving credit facility, not to exceed $250.0 million (expiring November 15, 2028) (3) (4) (5) (6) | | | 250.0 | | | | 250.0 | |
| Revolving credit facility, not to exceed $150.0 million (expired April 28, 2025) (2) (3) (4) (5) (6) | | | — | | | | 140.0 | |
| Revolving credit facility, not to exceed $32.8 million (expired April 28, 2025) (2) (3) (4) | | | — | | | | 30.0 | |
| Revolving credit facility, not to exceed $100.0 million (expiring January 16, 2029) (3) (4) (5) (6) | | | 100.0 | | | | 100.0 | |
| Revolving credit facility, not to exceed $200.0 million (expiring September 15, 2028) (3) (4) (5) (6) | | | 200.0 | | | | — | |
| Revolving credit facility, not to exceed $200.0 million (expiring September 15, 2027) (3) (4) (5) (6) | | | 10.0 | | | | — | |
| | | | | | | | | |
| Other facilities | | | | | | | | |
| Other debt | | | 5.4 | | | | 5.5 | |
| Total notes payable before unamortized debt issuance costs and discounts | | | 2,196.6 | | | | 2,221.3 | |
| Unamortized debt issuance costs and discounts | | | (22.0 | ) | | | (21.9 | ) |
| Total notes payable outstanding, net | | $ | 2,174.6 | | | $ | 2,199.4 | |
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