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Revenues - Contract Balances (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2018 | Jan. 02, 2018 | Dec. 31, 2017
Contract Balances |  |  |
Accounts receivable, net | $ 919.6 | $ 977.3 | $ 954.9
Unearned revenues | 278.9 |  | 302.6
Revenue recognized from unearned revenue | 176.2 |  |
Contracts in transit |  |  |
Contract Balances |  |  |
Accounts receivable, net | 306.6 |  | 356.1
Vehicle receivables |  |  |
Contract Balances |  |  |
Accounts receivable, net | 246.0 |  | 233.0
Manufacturer receivables |  |  |
Contract Balances |  |  |
Accounts receivable, net | 206.1 |  | 230.1
Trade receivables |  |  |
Contract Balances |  |  |
Accounts receivable, net | $ 153.2 |  | $ 136.7

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