Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Summary of Reportable Operating Segment (Details)

v3.22.1
Segment Information - Summary of Reportable Operating Segment (Details) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Revenues:        
Total consolidated revenues $ 3,586,600,000 $ 2,786,800,000    
Segment income (loss):        
Segment income (loss) 154,400,000 87,900,000    
Interest expense, other, net (20,800,000) (10,300,000)    
Other income (expense), net 300,000 100,000    
Income (loss) from continuing operations before taxes 128,900,000 72,600,000    
Depreciation, Depletion and Amortization 29,900,000 23,600,000    
FloorPlanInterestExpense 5,000,000.0 5,100,000    
Interest Expense, Other 20,800,000 10,300,000    
Payments to Acquire Property, Plant, and Equipment 58,800,000 67,700,000    
Cash and cash equivalents 360,200,000 77,200,000 $ 299,400,000 $ 170,300,000
Other Assets 0 200,000    
Assets 5,006,200,000   4,975,100,000  
Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 2,961,300,000 2,279,700,000    
Segment income (loss):        
Interest expense, other, net (20,000,000.0) (10,000,000.0)    
Depreciation, Depletion and Amortization 24,900,000 20,400,000    
FloorPlanInterestExpense 3,300,000 4,100,000    
Interest Expense, Other 20,000,000.0 10,000,000.0    
Payments to Acquire Property, Plant, and Equipment 30,200,000 46,200,000    
Assets 3,986,900,000   3,934,900,000  
EchoPark Segment        
Revenues:        
Total consolidated revenues 625,300,000 507,100,000    
Segment income (loss):        
Interest expense, other, net (800,000) (300,000)    
Depreciation, Depletion and Amortization 5,000,000.0 3,200,000    
FloorPlanInterestExpense 1,700,000 1,000,000.0    
Interest Expense, Other 800,000 300,000    
Payments to Acquire Property, Plant, and Equipment 28,600,000 21,500,000    
Assets 659,100,000   $ 740,600,000  
Operating segments | Franchised Dealerships Segment        
Segment income (loss):        
Segment income (loss) 163,800,000 70,600,000    
Operating segments | EchoPark Segment        
Segment income (loss):        
Segment income (loss) (34,900,000) 2,000,000.0    
Reconciling items        
Segment income (loss):        
Other income (expense), net 128,900,000 72,600,000    
New vehicles        
Revenues:        
Total consolidated revenues 1,499,900,000 1,156,300,000    
New vehicles | Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 1,494,300,000 1,156,300,000    
Used vehicles        
Revenues:        
Total consolidated revenues 1,370,900,000 1,090,100,000    
Used vehicles | Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 853,700,000 661,500,000    
Used vehicles | EchoPark Segment        
Revenues:        
Total consolidated revenues 517,200,000 441,400,000    
Wholesale vehicles        
Revenues:        
Total consolidated revenues 168,700,000 74,800,000    
Wholesale vehicles | Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 106,300,000 56,200,000    
Wholesale vehicles | EchoPark Segment        
Revenues:        
Total consolidated revenues 62,400,000 18,600,000    
Parts, service and collision repair        
Revenues:        
Total consolidated revenues 380,500,000 320,900,000    
Parts, service and collision repair | Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 380,500,000 308,100,000    
Finance, insurance and other, net        
Revenues:        
Total consolidated revenues 166,600,000 144,700,000    
Finance, insurance and other, net | Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 126,500,000 97,600,000    
Finance, insurance and other, net | EchoPark Segment        
Revenues:        
Total consolidated revenues 40,100,000 47,100,000    
NewVehiclesMember | EchoPark Segment        
Revenues:        
Total consolidated revenues 5,600,000 0    
Retail New Vehicles [Member]        
Revenues:        
Total consolidated revenues 1,351,300,000 1,134,000,000    
Retail New Vehicles [Member] | Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 1,345,700,000 1,134,000,000    
Fleet New Vehicles [Member]        
Revenues:        
Total consolidated revenues 148,600,000 22,300,000    
Fleet New Vehicles [Member] | Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues $ 148,600,000 $ 22,300,000