BENEFIT PLANS - THE AMOUNTS IN AOCI THAT ARE EXPECTED TO BE AMORTIZED AS NET EXPENSE (INCOME) DURING NEXT FISCAL YEAR (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Pension Plans, Defined Benefit
Schedule of Pension and Other Postretirment Benefits Expected Benefit Payments [Line Items]
Amount of net prior service (credit) cost	$ (0.2)
Amount of net loss	4.9
Other Postretirement Benefit Plans, Defined Benefit
Schedule of Pension and Other Postretirment Benefits Expected Benefit Payments [Line Items]
Amount of net prior service (credit) cost	0.0
Amount of net loss	$ 0.3