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ASSETS HELD FOR SALE - Narrative (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) dealership franchise | Dec. 31, 2023 USD ($) dealership property franchise | Dec. 31, 2022 USD ($)
Long Lived Assets Held-for-sale [Line Items] |  |  |
Assets held for sale | $ 172.4 | $ 340.1 |
Liabilities associated with assets held for sale | $ 1.9 | $ 2.1 |
Number of franchise, sold (in franchises) | franchise | 5 | 1 |
Number of dealership locations, sold (in dealership locations) | dealership | 5 | 1 |
Gain on dealership divestitures, net | $ 8.6 | $ 13.5 | $ 207.1
Held-for-sale |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |
Number of real estate properties | franchise | 7 | 11 |
Number of dealership locations acquired (in dealership locations) | dealership | 6 | 11 |
Held-for-sale | Real Estate Not Currently Used in Operations |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |
Number of real estate properties | property |  | 1 |

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