CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS SUPPLEMENTAL DISCLOSURE OF NON-CASH ITEMS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS NON-CASH SUPPLEMENTAL DATA
Capital leases for the acquisition of promotional vehicles	$ 1.5	$ 1.9
Accounts payable for property and equipment purchases	12.4	0.1
Net change in accrued liabilities related to other intangible assets addition	6.2	$ 3.0
Accounts payable for short-term and long-term investments	$ 35.1