Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Cumulative Effect of Adjustments for Adoption of ASC 606 (Details)

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Summary of Significant Accounting Policies - Cumulative Effect of Adjustments for Adoption of ASC 606 (Details) - USD ($)
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Revenues:      
Revenues $ 3,491,200,000 $ 3,456,200,000  
Cost of Sales:      
Cost of Sales (2,937,700,000) (2,884,900,000)  
Operating income (loss) 106,400,000 154,400,000  
Assets:      
Receivables, net 374,800,000   $ 462,400,000
Liabilities:      
Other accrued liabilities 359,900,000   352,400,000
Stockholders' Equity:      
Retained Earnings (Accumulated Deficit) 1,138,100,000   1,100,300,000
Parts, service and collision repair      
Revenues:      
Revenues 430,500,000 381,200,000  
Cost of Sales:      
Cost of Sales (217,600,000) (194,300,000)  
Finance, insurance and other, net      
Revenues:      
Revenues 168,600,000 $ 166,600,000  
ASU 2014-09 | Finance, insurance and other, net      
Assets:      
Contract assets $ 20,500,000   $ 38,700,000