ACCUMULATED OTHER COMPREHENSIVE LOSS - Components of Accumulated Other Comprehensive Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ (208.2)
Currency translation adjustment, net of tax	(0.8)	[1]	1.2	[1]
Amortization of pension related costs, net of tax	1.9	[2],[3]	3.8	[2],[3]
Other comprehensive (loss) income	1.1		5.0
Ending Balance	(207.1)
Foreign Currency Translation [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	23.3
Currency translation adjustment, net of tax	(0.8)
Amortization of pension related costs, net of tax	0
Other comprehensive (loss) income	(0.8)
Ending Balance	22.5
Actuarial (Loss) Gain On Post-Retirement Benefits [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(231.5)
Currency translation adjustment, net of tax	0
Amortization of pension related costs, net of tax	1.9
Other comprehensive (loss) income	1.9
Ending Balance	$ (229.6)

[1] Net of tax of $0.3 million and $(0.7) million for the three months ended March 31, 2013 and 2012, respectively.

[2] Net of tax of $(0.3) million for each of the three months ended March 31, 2013 and 2012.

[3] This other comprehensive income component is included in the computation of net periodic benefit (income) costs. See Note 2, “Pension and Post-Retirement Benefits,” for additional information regarding net periodic benefit (income) costs.