FAIR VALUE (Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions		Sep. 30, 2017	Dec. 31, 2016
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities		$ 3.4	$ 2.8
Debt maturing within one year	[1]	(16.1)	(18.1)
Long-term debt	[1]	(1,873.0)	(1,875.8)
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities		3.4	2.8
Debt maturing within one year	[1]	(16.1)	(18.1)
Long-term debt	[1]	(1,789.9)	(1,877.5)
Foreign Exchange Forward [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value, net asset (liability)		(0.2)	(2.4)
Foreign Exchange Forward [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value, net asset (liability)		$ (0.2)	$ (2.4)

[1] The carrying value of debt maturing within one year and long-term debt is presented net of debt issuance costs and includes any related discount or premium and unamortized deferred gains on terminated interest-rate swap agreements, as applicable.