ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Allowance for Doubtful Accounts [Roll Forward]
Balance at beginning of year	$ 6.4	$ 3.0
Provisions charged	1.4	0.2
Write-offs, net of recoveries	(1.5)	(0.1)
Balance at end of period	$ 6.3	$ 3.1