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Store Divestitures (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 USD ($) store | Dec. 31, 2021 USD ($) store | Dec. 31, 2020 USD ($) store franchises | Dec. 31, 2019 USD ($) store
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Gain on disposal | $ | $ 10.6 | $ 13.3 | $ 2.5 | $ 29.7
Number of Franchises Terminated | franchises |  |  | 1 |
Dealerships Divested |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Number of businesses divested | 1 | 3 | 1 | 8
Collision Centers Divested [Member] |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Number of businesses divested | 17 | 18 | 2 | 2

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