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Receivables, Net and Contract Assets - Financial Assets (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Contracts-in-transit | $ 147,100,000 | $ 169,900,000
Vehicle receivables | 64,500,000 | 84,300,000
Total contracts-in-transit and vehicle receivables | 211,500,000 | 254,100,000
Less: allowance for doubtful accounts | 300,000 | 300,000
Total contracts-in-transit and vehicle receivables, net | 211,200,000 | 253,800,000
Accounts and notes receivable |  |
Accounts and notes receivable | 203,100,000 | 227,900,000
Less: allowance for doubtful accounts | 3,200,000 | 2,800,000
Total accounts and notes receivables, net | 200,000,000.0 | 225,100,000
Total contract assets | 35,300,000 | 21,600,000
Allowance for doubtful accounts | 0 | 0
Manufacturer receivables |  |
Accounts and notes receivable |  |
Accounts and notes receivable | 108,700,000 | 123,900,000
Parts and service receivables |  |
Accounts and notes receivable |  |
Accounts and notes receivable | 53,200,000 | 57,000,000.0
F&I receivables |  |
Accounts and notes receivable |  |
Accounts and notes receivable | 27,400,000 | 28,300,000
Other |  |
Accounts and notes receivable |  |
Accounts and notes receivable | $ 13,800,000 | $ 18,700,000

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