FAIR VALUE (Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	$ 3.8	$ 3.7
Debt maturing within one year	(270.8)	(25.7)
Long-term debt	(1,629.6)	(1,872.2)
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	3.8	3.7
Debt maturing within one year	(270.5)	(25.7)
Long-term debt	(1,586.8)	(1,718.6)
Foreign Exchange Forward | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign exchange forward contracts	0.1	0.0
Foreign Exchange Forward | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign exchange forward contracts	$ 0.1	$ 0.0