PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2012
Stockholders' Equity Note [Abstract]
Stock Repurchased During Period, Shares			4.2
Treasury Stock, Carrying Basis						$ 700.0
Common stock, par value per share (in dollars per share)						$ 0.10
Preferred stock, shares authorized (in shares)						30.0
Preferred stock, par value per share (in dollars per share)						$ 0.10
Common stock, shares authorized (in shares)						265.0
Common shares issued and outstanding [Abstract]
Common shares issued	125.6		125.1	125.6	125.6	122.4	125.1	125.6	123.9
In treasury	(22.9)		(23.2)	(22.9)	(22.9)	(23.5)	(23.2)	(22.9)	(22.6)
Outstanding						98.9	101.9
Rollforward of common shares issued [Abstract]
Common shares issued, beginning balance (in shares)	125.6		125.1	125.6
Common stock issued under employee stock plans (in shares)	1.7	1.6	1.6
Common stock issued upon conversion of zero-coupon subordinated notes (in shares)	0.3	0.4	0.0
Common shares repurchased (in shares)	(2.5)	(0.3)	(4.3)
Common shares issued, ending balance (in shares)			122.4	125.1	125.6
Rollforward of common shares held in treasury [Abstract]
Common shares held in treasury, beginning balance	22.9		23.2	22.9
Surrender of restricted stock and performance share awards	0.3	0.3	0.3
Common shares held in treasury, ending balance			23.5	23.2	22.9
Share repurchase program [Abstract]
Purchase of common stock			$ (700.0)	$ (338.1)
Outstanding common stock repurchase authorization						$ 443.5
Foreign Currency Translation Adjustments
Foreign Currency Translation Adjustments, balance			(389.8)	(240.7)	$ (471.5)
Current year adjustments, Foreign Currency Translation Adjustments	$ 265.1		(176.6)	265.1	(250.8)
Tax effect of adjustments, Foreign Currency Translation Adjustments	(34.3)		27.5
Net Benefit Plan Adjustments
Net Benefit Plan Adjustments, balance	(110.4)		(93.0)	(110.4)
Tax effect of adjustments, Net Benefit Plan Adjustments	(3.5)		(9.6)
Net Benefit Plan Adjustments, balance			(73.3)	(93.0)	(110.4)
Accumulated Other Comprehensive Earnings
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax			(7.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	18.5		7.4
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	18.5		7.4
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax	2.4		29.4
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	0.0		0.0
Other Comprehensive Income (Loss), before Reclassifications, before Tax	267.5		(147.2)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax			0.0
Tax effect of adjustments, Accumulated Other Comprehensive Earnings	$ (37.8)		17.9	(37.8)	$ (3.8)
Accumulated Other Comprehensive Earnings, balance						463.1	$ 333.7		$ 287.0
AOCI Attributable to Parent [Member]
Share repurchase program [Abstract]
Purchase of common stock			$ 0.0	$ 0.0
Accumulated Other Comprehensive Earnings
Accumulated Other Comprehensive Earnings, balance						$ 463.1	$ 333.7	$ 581.9