ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Allowance for Doubtful Accounts [Roll Forward]
Balance at beginning of year			$ 3.2	$ 4.8
Provisions charged (credited)	0.6	(0.2)	1.0	0.2
Write-offs, net			(0.1)
Recoveries, net				0.6
Balance at end of period	$ 4.1	$ 5.6	$ 4.1	$ 5.6