SHAREHOLDERS' EQUITY (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended			36 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Apr. 24, 2017	Apr. 24, 2014
Stockholders' Equity Note [Abstract]
Authorized share repurchase program (in shares)					8.0
Stock Repurchased and Retired During Period, Shares	0.0	0.0	0.0
Cost of common stock repurchased and retired		$ 0.0	$ 0.0
Total repurchased shares under this program (in shares)				1.9
Remaining shares authorized to be purchased that expired (in shares)				6.1
Stock options exercised (in shares)	1.7	0.3	0.1
Total value of stock options exercised	$ 32.4	$ 4.1	$ 3.1
Foreign currency translation adjustment [Roll Forward]
Beginning balance	(24.1)	(12.1)	(2.3)
Unrealized losses, before Reclassification Adjustments and Tax	55.6	(22.4)	(15.7)
Reclassification adjustments into income	0.0	0.0	0.0
Tax (provision) benefit	(23.9)	10.4	5.9
Net Change in Foreign Currency Translation Adjustment	31.7	(12.0)	(9.8)
Ending balance	7.6	(24.1)	(12.1)
Unrealized gains (losses) on derivative contracts (net of taxes) [Roll Forward]
Beginning balance	12.8	(6.9)	(4.2)
Unrealized (Losses) Gains on Derivatives Arising During Period, before Tax	1.9	26.3	(13.9)
Reclassification Adjustment from AOCI on Derivatives, before Tax	(4.6)	5.8	9.7
Derivatives Qualifying as Hedges, Tax	1.0	(12.4)	1.5
Net Change in Derivatives Qualifying as Hedges	(1.7)	19.7	(2.7)
Ending balance	11.1	12.8	(6.9)
Pension and postretirement benefits (net of taxes) [Roll Forward]
Beginning balance	(498.7)	(473.5)	(436.6)
Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments and Tax	(27.3)	(61.0)	(125.3)
Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	26.9	20.4	65.6
Deferred tax benefit on pension and postretirement benefits	4.2	(15.4)	(22.8)
Net Change in Pension and Other Postretirement Benefit Plans	(4.6)	(25.2)	(36.9)
Ending balance	(503.3)	(498.7)	(473.5)
Accumulated other comprehensive loss [Roll Forward]
Beginning balance	(510.0)	(492.5)	(443.1)
Other Comprehensive Income (Loss), Net Gain (Loss) Recognized, Before Tax	30.2	(57.1)	(154.9)
Reclassification Adjustment from AOCI, before Tax	22.3	26.2	75.3
Other Comprehensive Income (Loss), Tax	(27.1)	13.4	30.2
Other Comprehensive Income (Loss), Net of Tax	25.4	(17.5)	(49.4)
Ending balance	$ (484.6)	$ (510.0)	$ (492.5)