ACQUISITIONS AND DISPOSITIONS - Acquisitions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Components of the aggregate purchase prices of the completed acquisitions
Net tangible assets acquired	$ (2.9)	$ 2.4	$ 10.7	$ 3.5
Identifiable intangible assets
Customer relationships		2.0	2.5	2.6
Patents				2.5
Trademarks				0.1
Other technology				0.2
Total intangible assets		2.0	2.5	5.4
Goodwill	2.7	0.4	3.9	6.7
Total aggregate purchase price	(0.2)	4.8	17.1	15.6
Acquisition related liabilities and contingent consideration	1.2		(4.3)	(0.1)
Net cash paid for acquisitions, including acquisition related liabilities and contingent consideration	$ 1.0	$ 4.8	$ 12.8	$ 15.5
Weighted average useful lives of identifiable intangible assets acquired			5 years	9 years