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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Repayment of Sellers' Floor Plan Notes Payable Dealership Acquisitions	$ 58.2	$ 101.6	$ 62.2
3.75% senior subordinated notes due 2020
Interest rate (as a percent)	3.75%	3.75%
5.50% senior subordinated notes due 2026
Interest rate (as a percent)	5.50%	5.50%	5.50%

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- Definition

Repayment of sellers' floor plan notes payable, dealership acquisitions.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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