ACCUMULATED OTHER COMPREHENSIVE INCOME AND OTHER COMPREHENSIVE LOSS (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Other comprehensive loss
Other comprehensive loss, before income taxes	$ (27.2)	$ (11.0)
Total tax benefit for the period	(10.3)	(3.3)
Other comprehensive loss, net of tax	(16.9)	(7.7)
Pension and OPEB liability adjustments | Other comprehensive loss
Other comprehensive loss
Other comprehensive loss, before income taxes	(2.4)	0.5
Total tax benefit for the period	(0.9)	0.1
Other comprehensive loss, net of tax	(1.5)	0.4
Change in foreign currency translation adjustment | Other comprehensive loss
Other comprehensive loss
Other comprehensive loss, before income taxes	(24.5)	(11.5)
Total tax benefit for the period	(9.3)	(3.4)
Other comprehensive loss, net of tax	(15.2)	(8.1)
Unrealized loss on derivatives | Other comprehensive loss
Other comprehensive loss
Other comprehensive loss, before income taxes	(0.3)
Total tax benefit for the period	(0.1)
Other comprehensive loss, net of tax	$ (0.2)