RESTRUCTURING CHARGES - Restructuring Reserve (Details) - USD ($) $ in Millions	6 Months Ended	18 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Liability Balance at period start	$ 33.9
Expense (Income), Net	10.3
Foreign Currency Translation	(0.2)
Cash utilized, net	(14.1)
Non-cash utilized, net	0.0
Liability Balance at period end	29.9	$ 29.9
EA Integration Restructuring Program
Restructuring Reserve [Roll Forward]
Liability Balance at period start	29.7
Expense (Income), Net	8.4
Foreign Currency Translation	(0.2)
Cash utilized, net	(12.9)	(55.4)
Non-cash utilized, net	0.0
Liability Balance at period end	25.0	25.0
EA Integration Restructuring Program | Employee severance and other personnel benefits
Restructuring Reserve [Roll Forward]
Liability Balance at period start	25.8
Expense (Income), Net	9.9
Foreign Currency Translation	(0.2)
Cash utilized, net	(12.1)
Non-cash utilized, net	0.0
Liability Balance at period end	23.4	23.4
EA Integration Restructuring Program | Other
Restructuring Reserve [Roll Forward]
Liability Balance at period start	3.9
Expense (Income), Net	(1.5)
Foreign Currency Translation	0.0
Cash utilized, net	(0.8)
Non-cash utilized, net	0.0
Liability Balance at period end	1.6	1.6
EA Integration Restructuring Program | Inventory adjustments and other restructuring
Restructuring Reserve [Roll Forward]
Expense (Income), Net	0.3
Other immaterial actions | Employee severance and other personnel benefits
Restructuring Reserve [Roll Forward]
Liability Balance at period start	2.5
Expense (Income), Net	1.9
Foreign Currency Translation	0.0
Cash utilized, net	(1.2)
Non-cash utilized, net	0.0
Liability Balance at period end	3.2	3.2
Other immaterial actions | Other
Restructuring Reserve [Roll Forward]
Liability Balance at period start	1.7
Expense (Income), Net	0.0
Foreign Currency Translation	0.0
Cash utilized, net	0.0
Non-cash utilized, net	0.0
Liability Balance at period end	1.7	1.7
Other immaterial actions | Inventory adjustments and other restructuring
Restructuring Reserve [Roll Forward]
Liability Balance at period start	4.2
Expense (Income), Net	1.9
Foreign Currency Translation	0.0
Cash utilized, net	(1.2)
Non-cash utilized, net	0.0
Liability Balance at period end	4.9	$ 4.9
2015 Efficiency Program
Restructuring Reserve [Roll Forward]
Expense (Income), Net	7.6
Cash utilized, net	$ (7.2)