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CREDIT FACILITIES AND LONG-TERM DEBT- Additional Information (Details) - Line of Credit | Jun. 03, 2022 CAD ($) | Jun. 02, 2022 USD ($)
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US Bank Credit Facility |  |
Debt Instrument [Line Items] |  |
Financing commitment amount |  | $ 3,750,000,000
Credit facility borrowing capacity (up to) |  | 4,500,000,000
US Bank Credit Facility | Used vehicle floor plan |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) |  | $ 1,000,000,000
US Bank Credit Facility | Used vehicle floor plan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 1.50%
US Bank Credit Facility | Revolving line of credit |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) |  | $ 1,500,000,000
Option to reallocate commitment, maximum aggregate commitment threshold percentage |  | 40.00%
Real property overall cap amount |  | $ 1,000,000,000
US Bank Credit Facility | New vehicle floor plan |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) |  | $ 1,200,000,000
US Bank Credit Facility | New vehicle floor plan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 1.20%
US Bank Credit Facility | Service loaner floor plan |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) |  | $ 50,000,000
Option to reallocate commitment, maximum aggregate commitment threshold percentage |  | 3.00%
US Bank Credit Facility | Service loaner floor plan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 1.30%
US Bank Credit Facility | Working capital revolver | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 1.10%
Bank Of Nova Scotia Credit Agreement |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) | $ 1,125,000,000 |
Bank Of Nova Scotia Credit Agreement | Minimum | Prime Rate |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 0.25% |
Bank Of Nova Scotia Credit Agreement | Minimum | Canadian Dollar Offered Rate |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 0.25% |
Bank Of Nova Scotia Credit Agreement | Maximum | Canadian Dollar Offered Rate |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.30% |
Bank Of Nova Scotia Credit Agreement | Wholesale Lease Financing |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) | $ 400,000,000 |
Bank Of Nova Scotia Credit Agreement | Motor Vehicle Leases |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) | 25,000,000 |
Bank Of Nova Scotia Credit Agreement | Wholesale Flooring Facility |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) | 500,000,000 |
Maximum borrowing capacity, accordion feature | 200,000,000 |
Bank Of Nova Scotia Credit Agreement | Financing Under Other Canadian Facilities |  |
Debt Instrument [Line Items] |  |
Maximum borrowing capacity, accordion feature | 200,000,000 |
Bank Of Nova Scotia Credit Agreement | Working Capital And General Corporate Purposes Financing |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) | 100,000,000 |
Bank Of Nova Scotia Credit Agreement | Used Motor Vehicles For Sale In Canada And For Export To United States |  |
Debt Instrument [Line Items] |  |
Credit facility borrowing capacity (up to) | $ 100,000,000 |

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