OTHER (INCOME)/EXPENSES-NET - Components of Other Expenses/(Income) Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income and Expenses [Abstract]
Severance and other costs	$ 18.0	$ 1.3	$ 2.2
SEC Settlement	12.0	0.0	0.0
Loss on asset disposals	9.0	0.0	0.0
Foreign exchange losses—net	6.3	0.5	9.3
Marketable securities gain	(5.6)	0.0	0.0
Administrative penalty (China)	0.0	0.0	33.4
Gain on sale of investment	0.0	(4.0)	0.0
Pension curtailment gain	0.0	5.4	0.0
Other—net	(0.7)	(4.7)	3.6
Other (income)/expenses—net	$ 39.0	$ (12.3)	$ 48.5