v3.26.1
SEGMENT INFORMATION - Segment Information (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Segment Reporting Information [Line Items]    
Assets $ 11,411.5 $ 11,618.2
Operating Segments    
Segment Reporting Information [Line Items]    
Assets 11,208.5 11,413.8
Operating Segments | Dealerships    
Segment Reporting Information [Line Items]    
Assets 10,136.6 10,389.5
Operating Segments | TCA    
Segment Reporting Information [Line Items]    
Assets 1,072.0 1,024.3
Intersegment Eliminations    
Segment Reporting Information [Line Items]    
Assets $ 203.0 $ 204.4