CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS SUPPLEMENTAL DISCLOSURE OF NON-CASH ITEMS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS NON-CASH SUPPLEMENTAL DATA
Capital leases for the acquisition of promotional vehicles	$ 2.0	$ 2.2
Accrued liabilities for property and equipment purchases	6.0	0.2
Net change in accrued liabilities related to other intangible assets addition	4.6	$ 2.3
Accounts payable for short-term investments	$ 4.2