OTHER COMPREHENSIVE INCOME (LOSS) INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Reclassification adjustments
Cost of sales	$ (2,082.1)	$ (1,851.8)
SG&A	(1,008.5)	(947.2)
Interest expense, net	(56.4)	(62.5)
Subtotal	87.6	77.9	$ 71.2	$ (290.9)
Derivative gains reclassified from AOCI into income, net of tax	33.5	(6.7)
Pension and postretirement net actuarial losses and prior service cost reclassified from AOCI into income, net of tax	0.3	3.3
Derivative & Hedging Instruments.
Reclassification adjustments
Amount recognized in AOCI	(44.9)	(4.3)
Other activity	(0.3)	0.1
Tax impact	0.1	3.8
Subtotal	(2.1)	(9.2)
Derivative & Hedging Instruments. | Amount reclassified from AOCI
Reclassification adjustments
Cost of sales	1.9	2.5
SG&A	47.6	(10.2)
Interest expense, net	(6.5)	(1.1)
(Gains) losses reclassified from AOCI into income	43.0	(8.8)
Pension & Postretirement Benefits.
Reclassification adjustments
(Gains) losses reclassified from AOCI into income	7.7	4.9
Other activity	(5.5)
Tax impact	(1.9)	(1.6)
Subtotal	0.3	3.3
Pension & Postretirement Benefits. | Amount reclassified from AOCI
Reclassification adjustments
(Gains) losses reclassified from AOCI into income	$ 7.7	$ 4.9