Annual report pursuant to Section 13 and 15(d)

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

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Description of Business and Summary of Significant Accounting Policies - Cumulative Effect of Adjustments for Adoption of ASC 606 (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues:      
Total revenues $ 12,396,400,000 $ 9,767,000,000 $ 10,454,300,000
Cost of Sales:      
Total cost of sales (10,482,100,000) (8,343,400,000) (8,933,300,000)
Operating income (loss) 538,400,000 33,900,000 307,700,000
Assets:      
Receivables, net 401,100,000 371,700,000  
Liabilities:      
Other accrued liabilities 350,500,000 288,100,000  
Stockholders’ Equity:      
Retained Earnings (Accumulated Deficit) 1,051,700,000 721,800,000  
Parts, service and collision repair      
Revenues:      
Total revenues 1,396,800,000 1,233,700,000 1,395,300,000
Cost of Sales:      
Total cost of sales (722,800,000) (639,200,000) (727,300,000)
Finance, insurance and other, net      
Revenues:      
Total revenues 637,200,000 489,900,000 $ 476,900,000
ASU 2014-09 | Finance, insurance and other, net      
Assets:      
Contract with Customer, Asset, Net, Current $ 34,900,000 $ 21,700,000