SHAREHOLDERS' EQUITY (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Jul. 21, 2011
SHAREHOLDERS' EQUITY [Abstract]
Authorized share repurchase program (in shares)			5
Stock repurchase program period in force (in years)			3
Common stock repurchased and retired (in shares)	0.1
Common stock repurchased and retired	$ 1.2
Total repurchased shares under this program (in shares)	0.3
Remaining shares authorized to be purchased (in shares)	4.7
Stock options exercised	0	0
Total value of stock options exercised	0.3	0.3
Foreign Currency Translation Adjustment [Abstract]
Beginning balance	1.8	0.4
Unrealized gains	0.3	1.3
Ending balance	2.1	1.7
Unrealized Gains (Losses) on Derivative Contracts (net of taxes) [Abstract]
Beginning balance	(5.3)	11.6
Unrealized gains	2.6	0.4
Reclassification adjustments into income	1.7	(3.5)
Ending balance	(1.0)	8.5
Pension and Postretirement Benefits (net of taxes) [Abstract]
Beginning balance	(290.7)	(273.8)
Unrealized gains	0	0
Reclassification adjustments into income	3.2	2.8
Ending balance	(287.5)	(271.0)
Accumulated Other Comprehensive Loss [Abstract]
Beginning balance	(294.2)	(261.8)
Unrealized gains	2.9	1.7
Reclassification adjustments into income	4.9	(0.7)
Ending balance	(286.4)	(260.8)
Deferred tax provision (benefit) on unrealized gains and losses on derivative contracts	2.6	(2.0)
Deferred tax provision pension and postretirement benefits	$ 2.0	$ 1.8