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v3.26.1

DEBT - Narrative (Details) $ in Millions, $ in Millions |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 27, 2026 USD ($) financeCompany financialInstitution | Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2025 | Feb. 27, 2026 CAD ($) financeCompany financialInstitution
Debt Instrument [Line Items] |  |  |  |  |
Proceeds from issuance of non-recourse notes payable |  | $ 1,057.7 | $ 564.0 |  |
Non-recourse | Asset Backed Funding Vehicles |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Proceeds from issuance of non-recourse notes payable |  | $ 1,057.7 |  |  |
Syndicated Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility | $ 6,500.0 |  |  |  |
Syndicated Credit Facility | New vehicle floor plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility | 2,700.0 |  |  |  |
Syndicated Credit Facility | Used vehicle floor plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility | 1,300.0 |  |  |  |
Syndicated Credit Facility | Service loaner floor plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility | 150.0 |  |  |  |
Syndicated Credit Facility | Revolving line of credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility | $ 2,400.0 |  |  |  |
Option to reallocate commitment, maximum aggregate commitment threshold (as a percent) | 50.00% |  |  |  | 50.00%
Syndicated Credit Facility | Line of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, number of counter-parties | financialInstitution | 18 |  |  |  | 18
Debt instrument, number of manufacturer-affiliated finance companies | financeCompany | 6 |  |  |  | 6
Basis spread on variable rate (as a percent) | 0.10% |  |  |  |
Syndicated Credit Facility | Line of Credit | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.40% |  |  |  |
Syndicated Credit Facility | Line of Credit | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.20% |  |  |  |
Syndicated Credit Facility | Line of Credit | New vehicle floor plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.10% |  |  |  |
Syndicated Credit Facility | Line of Credit | Used vehicle floor plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.20% |  |  |  |
Syndicated Credit Facility | Line of Credit | Service loaner floor plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.20% |  |  |  |
Syndicated Credit Facility | Line of Credit | Revolving line of credit | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.00% |  |  |  |
Syndicated Credit Facility | Line of Credit | Revolving line of credit | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 2.00% |  |  |  |
Syndicated Credit Facility, Upon Expansion of Original Line of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility | $ 7,000.0 |  |  |  |
Bank of Nova Scotia Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility |  |  |  |  | $ 1,100
Bank of Nova Scotia Credit Agreement | Working capital revolving facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility |  |  |  |  | 125
Bank of Nova Scotia Credit Agreement | Wholesale flooring facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility |  |  |  |  | 375
Bank of Nova Scotia Credit Agreement | Used vehicle flooring facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility |  |  |  |  | 100
Bank of Nova Scotia Credit Agreement | Wholesale leasing facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility |  |  |  |  | 500
Bank of Nova Scotia Credit Agreement | Daily rental facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing facility |  |  |  |  | $ 25
Bank of Nova Scotia Credit Agreement | Line of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, number of counter-parties | financialInstitution | 6 |  |  |  | 6
Debt instrument, number of manufacturer-affiliated finance companies | financeCompany | 2 |  |  |  | 2
Basis spread on variable rate (as a percent) | 0.30% |  |  |  |
Bank of Nova Scotia Credit Agreement | Line of Credit | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.25% |  |  |  |
Bank of Nova Scotia Credit Agreement | Line of Credit | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 2.25% |  |  |  |
Bank of Nova Scotia Credit Agreement | Line of Credit | Used vehicle floor plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.10% |  |  | 1.25% |

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