ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
ACCUMULATED OTHER COMPREHENSIVE INCOME
Accumulated other comprehensive loss, balance at beginning of period	$ (40.9)
Other comprehensive income before reclassifications	0.1
Amounts reclassified out of accumulated other comprehensive loss	1.5
Net current period other comprehensive income	1.6
Accumulated other comprehensive loss, balance at end of period	(39.3)
Cash Flow Hedges
ACCUMULATED OTHER COMPREHENSIVE INCOME
Accumulated other comprehensive loss, balance at beginning of period	(5.2)
Other comprehensive income before reclassifications	0.1
Amounts reclassified out of accumulated other comprehensive loss	0.9
Net current period other comprehensive income	1.0
Accumulated other comprehensive loss, balance at end of period	(4.2)
Defined Benefit Pension Plans
ACCUMULATED OTHER COMPREHENSIVE INCOME
Accumulated other comprehensive loss, balance at beginning of period	(35.7)
Amounts reclassified out of accumulated other comprehensive loss	0.6
Net current period other comprehensive income	0.6
Accumulated other comprehensive loss, balance at end of period	$ (35.1)