Annual report [Section 13 and 15(d), not S-K Item 405]

Business Acquisitions and Dispositions - Additional Information (Details)

v3.25.4
Business Acquisitions and Dispositions - Additional Information (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2025
USD ($)
store
Store
retail_Units
Dec. 31, 2024
USD ($)
store
Dec. 31, 2023
USD ($)
store
Dec. 31, 2025
USD ($)
Dec. 31, 2025
store
Dec. 31, 2025
Brand
Dec. 31, 2025
Dec. 31, 2025
retail_Units
Mar. 31, 2025
USD ($)
Luxury Franchise [Member]                        
Business Combination [Line Items]                        
Number of franchises disposed | store       1 2              
Number Of Franchises Disposed | store       1 2              
Northwest Motorsport                        
Business Combination [Line Items]                        
Number of Preowned Stores Closed 7     3                
Number of Preowned Stores Closed 7     3                
Echo Park [Member]                        
Asset Acquisition [Line Items]                        
Asset impairment charges $ 16,700,000                      
Asset impairment charges 16,700,000                      
Mid-line import franchise                        
Business Combination [Line Items]                        
Number of franchises disposed | store       1 2              
Number Of Franchises Disposed | store       1 2              
EchoPark Delivery/Buy Centers                        
Business Combination [Line Items]                        
Number of Preowned Stores Closed         14              
Number of Preowned Stores Closed         14              
Domestic Franchise                        
Business Combination [Line Items]                        
Number of franchises disposed | store       1                
Number Of Franchises Disposed | store       1                
EchoPark Stores [Member]                        
Business Combination [Line Items]                        
Number of terminated stores | store         7              
Number of Preowned Stores Closed         8              
Number of Preowned Stores Closed         8              
Number of franchise dealerships opened | store       5 2              
Cash generated from disposition 52,200,000     $ 9,600,000 $ 8,200,000              
Number of franchises terminated | retail_Units                     1  
Payments to Acquire Businesses, Gross       (440,300,000) $ (55,300,000) $ (75,100,000)            
Number of Powersports Stores Acquired | store         1 1            
Business Combination, Recognized Liability Assumed, Accounts Payable, Current             $ 3,200,000          
Number of Powersports Stores Acquired | store         1 1            
Restructuring Costs   $ 4,800,000 $ 75,200,000                  
Asset Acquisition [Line Items]                        
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Land 5,200,000       $ 5,200,000 $ 29,000,000.0            
Business Combination, Recognized Asset Acquired, Inventory, Current 17,200,000       17,200,000 11,100,000 166,100,000          
Business Combination, Recognized Asset Acquired, Other Asset, Current 100,000       100,000 100,000 1,800,000          
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment 300,000       300,000 700,000 9,400,000          
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill 7,800,000       7,800,000 11,900,000 64,200,000          
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill 6,900,000       6,900,000 22,600,000 202,000,000.0          
Business Combination, Recognized Liability Assumed, Liability (3,300,000)       (3,300,000)   300,000          
Restructuring Costs   4,800,000 75,200,000                  
Asset impairment charges       173,800,000 3,900,000 79,300,000            
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain       0 (3,500,000) 0            
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Right-of-use Asset       88,000,000.0 13,300,000              
Business Combination, Recognized Liability Assumed, Lease Obligation $ (13,300,000)       (13,300,000)   (88,000,000.0)          
Business Combination, Recognized Liability Assumed, Accounts Payable, Current             (3,200,000)          
Payments to Acquire Businesses, Gross       (440,300,000) (55,300,000) (75,100,000)            
Business Combination, Pro Forma Information, Pro Forma Revenue       15,511,000,000                
Business Acquisition, Pro Forma Earnings       183,500,000                
Business Combination, Acquiree's Revenue since Acquisition Date, Actual       284,900,000                
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual       8,300,000                
Severance Costs   900,000 2,200,000                  
Asset impairment charges       173,800,000 3,900,000 79,300,000            
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain       $ 0 (3,500,000) $ 0            
Equity Ownership, Excluding Consolidated Entity and Equity Method Investee, Percentage                   50.00%    
Business Acquisition, Earnings Reported by Acquired Entity for Last Annual Period         288,100,000              
Business Combination, Acquiree's Revenue, Prior Period         14,861,900,000              
Business Combination, Transaction Cost, Excluding Separately Recognized Transaction             0          
Business Combination, Goodwill, Expected Tax Deductible, Amount             266,200,000          
Franchised Awarded       1                
NumberOfPowerSportsTerminated | retail_Units       1                
North Point Volvo [Member]                        
Business Combination [Line Items]                        
Payments to Acquire Businesses, Gross       $ (21,100,000)                
Business Combination, Recognized Liability Assumed, Accounts Payable, Current             (3,000,000.0)          
Asset Acquisition [Line Items]                        
Business Combination, Recognized Asset Acquired, Inventory, Current             10,700,000          
Business Combination, Recognized Asset Acquired, Other Asset, Current             1,700,000          
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment             200,000         $ 12,400,000
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill             3,500,000          
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill             6,000,000.0          
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain       3,500,000                
Business Combination, Recognized Liability Assumed, Accounts Payable, Current             $ 3,000,000.0          
Payments to Acquire Businesses, Gross       (21,100,000)                
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain       $ 3,500,000                
Inventories                        
Business Combination [Line Items]                        
Restructuring Costs     10,000,000.0                  
Asset Acquisition [Line Items]                        
Restructuring Costs     10,000,000.0                  
Echo Park [Member]                        
Business Combination [Line Items]                        
Number of Stores | Store       18                
Number of Stores | Store       18                
Asset Acquisition [Line Items]                        
Asset impairment charges       $ (200,000) 2,700,000              
Asset impairment charges       $ (200,000) 2,700,000              
Franchised Dealerships [Member]                        
Business Combination [Line Items]                        
Number of Stores | Store       111                
Number of different brands of cars and light trucks | Brand                 24      
Number of Stores | Store       111                
Number of different brands of cars and light trucks | Brand                 24      
Asset Acquisition [Line Items]                        
Asset impairment charges         1,200,000              
Asset impairment charges         $ 1,200,000              
Powersports Dealerships                        
Business Combination [Line Items]                        
Number of businesses acquired | store         2 5            
Number of Stores       14       14        
Number of Stores       14       14        
Business Combination, Number of Businesses Acquired | store         2 5            
Asset Acquisition [Line Items]                        
Asset impairment charges       $ (7,200,000)                
Asset impairment charges       (7,200,000)                
Contract Termination                        
Business Combination [Line Items]                        
Restructuring Costs   3,900,000 400,000                  
Asset Acquisition [Line Items]                        
Restructuring Costs   $ 3,900,000 400,000                  
Contract Termination                        
Business Combination [Line Items]                        
Restructuring Costs     14,100,000                  
Asset Acquisition [Line Items]                        
Restructuring Costs     14,100,000                  
Property, Plant and Equipment                        
Business Combination [Line Items]                        
Restructuring Costs     32,500,000                  
Asset Acquisition [Line Items]                        
Restructuring Costs     32,500,000                  
Property, Plant and Equipment | Powersports Dealerships                        
Asset Acquisition [Line Items]                        
Asset impairment charges       (400,000)                
Asset impairment charges       $ (400,000)                
ROU Asset                        
Business Combination [Line Items]                        
Restructuring Costs     16,000,000.0                  
Asset Acquisition [Line Items]                        
Restructuring Costs     $ 16,000,000.0