RESTRUCTURING CHARGES - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended			24 Months Ended	48 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		$ 21.8	$ 36.2
Payments for restructuring		27.0	45.2
2018 Optimization Restructuring Program
Restructuring Cost and Reserve [Line Items]
Additional capital expenditures, expected cost		10.0		$ 10.0
Restructuring charges and other, net		$ 5.7
Percent of restructuring charges expected to be paid in cash		85.00%		85.00%
Payments for restructuring		$ 0.8
Restructuring costs recognized to date		5.7		$ 5.7
2018 Optimization Restructuring Program | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related charges		30.0		30.0
2018 Optimization Restructuring Program | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related charges		40.0		40.0
2018 Optimization Restructuring Program | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		4.5
Payments for restructuring		0.8
Restructuring costs recognized to date		4.5		4.5
2018 Optimization Restructuring Program | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		1.2
Payments for restructuring		0.0
Restructuring costs recognized to date		0.0		0.0
EA Integration Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		10.0	37.7
Payments for restructuring		21.4	42.5	63.9
Restructuring costs recognized to date		82.2	72.2	82.2
EA Integration Restructuring Program | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		9.4	31.3
Payments for restructuring		21.1	37.0
Restructuring costs recognized to date		72.2	62.8	72.2
EA Integration Restructuring Program | Employee-related costs | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring costs recognized to date		72.2		72.2
EA Integration Restructuring Program | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		0.1
Restructuring costs recognized to date		5.1	5.0	5.1
EA Integration Restructuring Program | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		0.6	6.4
Payments for restructuring		0.3	$ 5.5
Restructuring costs recognized to date		4.9		$ 4.9
Scenario, Forecast | 2018 Optimization Restructuring Program | Minimum
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	$ 25.0
Scenario, Forecast | 2018 Optimization Restructuring Program | Maximum
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	$ 33.0
Scenario, Forecast | EA Integration Restructuring Program | Minimum
Restructuring Cost and Reserve [Line Items]
Payments for restructuring					$ 80.0
Scenario, Forecast | EA Integration Restructuring Program | Maximum
Restructuring Cost and Reserve [Line Items]
Payments for restructuring					$ 85.0
Restructuring Charges | 2018 Optimization Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		4.5
Selling, General and Administrative Expenses | 2018 Optimization Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		1.2
Selling, General and Administrative Expenses | 2018 Optimization Restructuring Program | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other, net		$ 1.2