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Credit Facilities and Long term Debt (Details) $ in Millions | Aug. 30, 2021 CAD ($) lineOfCredit | Aug. 01, 2021 USD ($) | Sep. 30, 2021
--- | --- | --- | ---
Line of Credit |  |  |
Short-term Debt [Line Items] |  |  |
Debt instrument, number | lineOfCredit | 3 |  |
Line of Credit | Revolving Credit Facility |  |  |
Short-term Debt [Line Items] |  |  |
Credit facility borrowing capacity (up to) | $ 50 |  |
Line of Credit | Floor Plan Financing for New and Used Vehicles |  |  |
Short-term Debt [Line Items] |  |  |
Credit facility borrowing capacity (up to) | 300 |  |
Line of Credit | Wholesale Lease Financing |  |  |
Short-term Debt [Line Items] |  |  |
Credit facility borrowing capacity (up to) | $ 350 |  |
Senior Notes | 5.250% Senior notes due 2025 |  |  |
Short-term Debt [Line Items] |  |  |
Aggregate principal amount |  | $ 300,000,000 |
Stated interest rate (percent) |  | 5.25% | 5.25%
Debt redemption price, percentage of principal amount redeemed |  | 102.625% |
Minimum | Line of Credit |  |  |
Short-term Debt [Line Items] |  |  |
Basis spread on variable rate | 0.25% |  |
Maximum | Line of Credit |  |  |
Short-term Debt [Line Items] |  |  |
Basis spread on variable rate | 1.50% |  |

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