INCOME TAX UNCERTAINTIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 M	Dec. 31, 2011
INCOME TAX UNCERTAINTIES
Income tax uncertainties	$ 9.2	$ 9.1
Change in income tax uncertainties	0.1
Amount of income tax uncertainties that, if recognized, would impact the effective tax rate	8.6	8.5
Decrease in liability for uncertain tax positions, high end of range	$ 5.0
Number of months liability for uncertain tax positions will decrease	12