Annual report pursuant to Section 13 and 15(d)

Segment Information - Summary of Reportable Operating Segment (Details)

v3.24.0.1
Segment Information - Summary of Reportable Operating Segment (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Segment
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Segment Reporting Information [Line Items]          
Operating income (loss)   $ 423,600,000 $ 314,000,000.0 $ 538,400,000  
Interest expense, other, net   (114,600,000) (89,900,000) (48,000,000.0)  
Other income (expense), net   100,000 200,000 (15,500,000)  
Income (loss) before taxes   241,900,000 190,000,000.0 458,200,000  
Segment Schedule Footnotes          
Asset impairment charges   79,300,000 320,400,000 100,000  
Nonrecurring Compensation Expense       6,500,000  
Total floor plan interest expense   67,200,000 34,300,000 16,700,000  
Depreciation, Depletion and Amortization, Nonproduction   142,300,000 127,500,000 101,100,000  
Total assets $ 5,364,600,000 5,364,600,000 4,978,300,000    
Cash and cash equivalents 28,900,000 28,900,000 229,200,000 299,400,000 $ 170,300,000
Goodwill 253,800,000 253,800,000 231,000,000.0 416,400,000  
Intangible Assets, Net (Excluding Goodwill) 417,400,000 $ 417,400,000 396,700,000    
Number of operating segments | Segment   3      
Segment Income   $ 321,200,000 510,400,000 458,300,000  
EchoPark Segment Income   (132,500,000) (133,900,000) (72,000,000.0)  
Powersports Segment Segment Income   5,700,000 2,700,000 0  
Segment Retail Units Sold          
Franchised Dealerships Used Vehicle Revenue   3,050,300,000 3,391,500,000 2,901,000,000  
Franchised Dealerships Wholesale Revenue   204,500,000 314,000,000.0 257,200,000  
Franchised Dealerships Fixed Ops Revenue   1,714,200,000 1,588,000,000 1,340,400,000  
Franchised Dealerships F&I Revenue   498,600,000 510,100,000 443,500,000  
Franchised Dealerships Segment Revenue   11,774,800,000 11,484,600,000 10,051,100,000  
EchoPark New Vehicle Revenue   1,000,000.0 9,200,000 9,000,000.0  
EchoPark Used Vehicle Revenue   2,143,800,000 2,116,800,000 2,032,600,000  
EchoPark Wholesale Revenue   111,700,000 170,600,000 110,000,000.0  
EchoPark F&I Revenue   177,900,000 166,400,000 193,700,000  
EchoPark Segment Revenue   2,434,400,000 2,463,000,000 2,345,300,000  
Powersports Used Vehicle Revenue   19,500,000 7,100,000 0  
Powersports Wholesale Vehicle Revenue   2,600,000 300,000 0  
Powersports Fixed Ops Revenue   45,300,000 11,700,000 0  
Powersports F&I Revenue   7,200,000 2,600,000 0  
Powersports Segment Revenues   163,200,000 53,500,000 0  
Total revenues   14,372,400,000 14,001,100,000 12,396,400,000  
EchoPark Segment Assets 667,900,000 667,900,000 267,600,000    
PowerSport Segment Assets [Domain] 212,000,000.0 212,000,000.0 117,800,000    
Powersport Interest Expense, Other, Net   1,700,000 1,000,000.0 0  
Powersports Floorplan Exp   600,000 0 0  
Powersports Depreciation and Amortization   3,400,000 1,000,000.0 0  
Debt Extinguishment Costs       15,500,000  
Gain (Loss) on Disposition of Property Plant Equipment     9,100,000    
Gain (loss) pre-tax loss on long-term compensation expense     4,400,000    
Powersports Capital Expenditures   6,900,000 200,000 0  
Echo Park [Member]          
Segment Schedule Footnotes          
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal   19,700,000      
Asset impairment charges 16,700,000        
Property, Plant and Equipment | Echo Park [Member]          
Segment Schedule Footnotes          
Asset impairment charges $ 10,200,000        
Fleet new vehicles          
Segment Retail Units Sold          
Total revenues   92,200,000 99,400,000 124,600,000  
Total new vehicles          
Segment Retail Units Sold          
Total revenues   6,396,800,000 5,722,000,000 5,118,000,000  
Retail new vehicles          
Segment Retail Units Sold          
Powersports New Vehicle Revenue   88,600,000 31,800,000 0  
Total revenues   6,304,600,000 5,622,600,000 4,993,400,000  
Echo Park [Member]          
Segment Schedule Footnotes          
Asset impairment charges     204,900,000 100,000  
Echo Park [Member] | Property, Plant and Equipment          
Segment Schedule Footnotes          
Asset impairment charges   78,300,000      
EchoPark Total Impairment [Member]          
Segment Schedule Footnotes          
Asset impairment charges   78,300,000 204,900,000    
Franchised Dealership Impairment [Member]          
Segment Schedule Footnotes          
Asset impairment charges   1,000,000.0   0  
Franchised Dealership Impairment [Member] | Property, Plant and Equipment          
Segment Schedule Footnotes          
Asset impairment charges   1,000,000      
FranchisedDealershipMember [Member] | Fleet new vehicles          
Segment Retail Units Sold          
Total revenues   92,200,000 99,400,000 124,600,000  
FranchisedDealershipMember [Member] | TotalNewVehicle          
Segment Retail Units Sold          
Total revenues   6,307,200,000 5,681,000,000 5,109,000,000  
FranchisedDealershipMember [Member] | Retail new vehicles          
Segment Retail Units Sold          
Total revenues   $ 6,215,000,000 5,581,600,000 4,984,400,000  
Franchised Dealerships [Member]          
Segment Schedule Footnotes          
Asset impairment charges     $ 115,500,000    
PreOwnedStoreMember [Member]          
Segment Schedule Footnotes          
Asset impairment charges       $ 100,000