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Inventory And Vehicle Floorplan Payable (Tables) | 6 Months Ended
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Jun. 30, 2017
Inventory And Vehicle Floorplan Payable [Abstract] |
Components Of Inventory | The components of inventory are as follows:
| June 30, 2017 |  | December 31, 2016
New vehicles | $ | 2,957.2 |  |  | $ | 2,761.5 |
Used vehicles | 553.3 |  |  | 559.1 |
Parts, accessories, and other | 202.7 |  |  | 199.5 |
Inventory | $ | 3,713.2 |  |  | $ | 3,520.1 |
Components Of Vehicle Floorplan Payable | The components of vehicle floorplan payable are as follows:
| June 30, 2017 |  | December 31, 2016
Vehicle floorplan payable - trade | $ | 2,264.7 |  |  | $ | 2,308.8 |
Vehicle floorplan payable - non-trade | 1,629.7 |  |  | 1,540.4 |
Vehicle floorplan payable | $ | 3,894.4 |  |  | $ | 3,849.2 |

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- Definition Inventory And Vehicle Floorplan Payable [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the components of vehicle floorplan payable. + References No definition available. + Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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