SHAREHOLDERS' EQUITY (Details) - USD ($) shares in Millions, $ in Millions	2 Months Ended	3 Months Ended				6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Apr. 26, 2018
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased and retired						$ 9.1	$ 0.0
Stock options exercised						0.2	0.9
Total value of stock options exercised						$ 2.2	$ 15.8
Foreign Currency Translation Adjustment [Roll Forward]
Beginning Balance			$ 7.6		$ (24.1)	7.6	(24.1)
Unrealized Gain (Loss), before Reclassification Adjustments and Tax		$ (26.1)	12.4	$ 28.1	8.3
Reclassification adjustments into income (gains) losses		0.0	0.0	0.0	0.0
Tax Benefit (Provision)		0.0	0.0	(12.2)	(2.3)
Net Change in Foreign Currency Translation Adjustment						(13.7)	21.9
Income Tax Reclassification Adjustment, Foreign Currency Translation						15.3
Ending Balance	$ 9.2	9.2		(2.2)		9.2	(2.2)
Unrealized Gains (Losses) on Derivative Contracts (net of taxes) [Roll Forward]
Beginning Balance			11.1		12.8	11.1	12.8
Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax		(0.4)	2.1	(3.7)	(3.1)
Reclassification adjustments into income (gains) losses		(2.7)	(2.3)	(2.3)	(0.1)
Derivatives Qualifying as Hedges, Tax		0.7	0.1	2.3	1.2
Net Change in Derivatives Qualifying as Hedges, Net of Tax		(2.4)		(3.7)		(2.5)	(5.7)
Income Tax Reclassification Adjustment, Derivative Contracts						2.4
Ending Balance	11.0	11.0		7.1		11.0	7.1
Pension and Postretirement Benefits (net of taxes) [Roll Forward]
Beginning Balance			(503.3)		(498.7)	(503.3)	(498.7)
Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments and Tax		0.0	0.0	0.0	0.0
Reclassification adjustments into income (gains) losses		9.1	9.4	6.8	6.6
Deferred Tax Benefit (Provision) on Pension and Other Postretirement Benefit Plans		(1.0)	(4.0)	(2.3)	(2.7)
Net Change in Pension and Other Postretirement Benefit Plans, Net of Tax						13.5	8.4
Income Tax Reclassification Adjustment, Pension and Postretirement Benefits						(103.6)
Ending Balance	(593.4)	(593.4)		(490.3)		(593.4)	(490.3)
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning Balance			(484.6)		(510.0)	(484.6)	(510.0)
Unrealized gains (losses)		(26.5)	14.5	24.4	5.2
Reclassification adjustments into income (gains) losses		6.4	7.1	4.5	6.5
Tax benefit (provision)		(0.3)	$ (3.9)	(12.2)	$ (3.8)
Other Comprehensive Income (Loss), Net of Tax						(2.7)	24.6
Income tax reclassification adjustment						(85.9)
Ending Balance	$ (573.2)	(573.2)		$ (485.4)		$ (573.2)	$ (485.4)
2018 Share Repurchase Program | Common Stock
Equity, Class of Treasury Stock [Line Items]
Authorized share repurchase program (in dollars)								$ 500.0
Stock Repurchased and Retired During Period, Shares	0.3					0.3
Common stock repurchased and retired	$ 9.1					$ 9.1
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 490.9	$ 490.9				$ 490.9