Inventories - Components of Inventories (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
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| Inventory Disclosure [Abstract] | ||
| New vehicles | $ 1,001,471 | $ 1,027,727 |
| Used vehicles | 311,417 | 293,179 |
| Service loaners | 147,451 | 141,542 |
| Parts, accessories and other | 61,228 | 66,013 |
| Net inventories | $ 1,521,567 | $ 1,528,461 |
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date for elements of machinery or equipment held for the purpose of replacing similar parts in the course of repair or maintenance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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