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Revenues - Contract Balances (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Contract Balances |  |
Accounts receivable, net | $ 756.6 | $ 960.3
Unearned revenues | 257.8 | 262.9
Revenue recognized from unearned revenue | 180.4 |
Contracts in transit |  |
Contract Balances |  |
Accounts receivable, net | 263.5 | 291.1
Vehicle receivables |  |
Contract Balances |  |
Accounts receivable, net | 220.6 | 249.8
Manufacturer receivables |  |
Contract Balances |  |
Accounts receivable, net | 135.9 | 244.6
Trade receivables |  |
Contract Balances |  |
Accounts receivable, net | $ 129.0 | $ 164.7

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 + Details
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