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, 2021
Mar. 31, 2020
Dec. 31, 2020
Revenues:      
Revenues $ 2,786,798,000 $ 2,308,056,000  
Cost of Sales:      
Cost of Sales (2,385,905,000) (1,957,478,000)  
Operating income (loss) 87,850,000 (221,875,000)  
Assets:      
Receivables, net 373,518,000   $ 371,666,000
Liabilities:      
Other accrued liabilities 295,331,000   279,477,000
Deferred income taxes 771,000   345,000
Stockholders' Equity:      
Retained Earnings (Accumulated Deficit) 771,864,000   721,770,000
Parts, service and collision repair      
Revenues:      
Revenues 320,914,000 334,680,000  
Cost of Sales:      
Cost of Sales (165,864,000) (176,782,000)  
Finance, insurance and other, net      
Revenues:      
Revenues 144,661,000 $ 115,292,000  
ASU 2014-09 | Finance, insurance and other, net      
Assets:      
Contract assets $ 14,500,000   $ 21,700,000