v3.26.1
ACQUISITIONS AND DIVESTITURES - Divestitures (Details) - Disposed of by sale
 6 Months Ended
Jun. 30, 2026
franchise
dealershipLocation
Jun. 30, 2025
franchise
dealershipLocation
Mercedes-Benz; Sprinter    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 4  
Number of dealership locations, sold (in dealership locations) | dealershipLocation 2  
Audi    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 1  
Number of dealership locations, sold (in dealership locations) | dealershipLocation 1  
Nissan Franchise    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 1 1
Number of dealership locations, sold (in dealership locations) | dealershipLocation 1 1
Chrysler Jeep Dodge Ram Franchise    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 3 3
Number of dealership locations, sold (in dealership locations) | dealershipLocation 1 1
Land Rover    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 2  
Number of dealership locations, sold (in dealership locations) | dealershipLocation 2  
Porsche    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 1  
Number of dealership locations, sold (in dealership locations) | dealershipLocation 1  
BMW    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 1  
Number of dealership locations, sold (in dealership locations) | dealershipLocation 1  
Infiniti    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise 1  
Number of dealership locations, sold (in dealership locations) | dealershipLocation 1  
Volvo Franchise    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise   1
Number of dealership locations, sold (in dealership locations) | dealershipLocation   1
Chevrolet Franchise    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise   1
Number of dealership locations, sold (in dealership locations) | dealershipLocation   1
Ford Franchise    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise   1
Number of dealership locations, sold (in dealership locations) | dealershipLocation   1
Toyota Franchise    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of franchises, sold (in franchises) | franchise   2
Number of dealership locations, sold (in dealership locations) | dealershipLocation   2