v3.26.1
Intangible Assets - Narrative (Details) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Goodwill [Line Items]    
Goodwill $ 2,813,600,000 $ 2,435,700,000
Retail automotive dealership    
Goodwill [Line Items]    
Goodwill 2,237,100,000  
Retail commercial truck dealership    
Goodwill [Line Items]    
Goodwill 498,600,000  
Other    
Goodwill [Line Items]    
Goodwill 77,900,000  
Non-Automotive Investments    
Goodwill [Line Items]    
Goodwill $ 0