ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Allowance for Doubtful Accounts [Roll Forward]
Balance at beginning of year			$ 3.6	$ 3.2
Provisions charged	(0.1)	0.6	0.4	1.0
Write-offs, net of recoveries			(0.1)	(0.1)
Balance at end of period	$ 3.9	$ 4.1	$ 3.9	$ 4.1