RESTRUCTURING CHARGES - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended		14 Months Ended	37 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	$ 24.4	$ 27.0
2018 Optimization Restructuring Program
Restructuring Cost and Reserve [Line Items]
Percent of restructuring charges expected to be paid in cash	88.00%		88.00%	88.00%
Payments for restructuring	$ 14.1	0.8	$ 25.9
Restructuring costs recognized to date	39.5	5.7	39.5	$ 39.5
2018 Optimization Restructuring Program | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	13.8	0.8
Restructuring costs recognized to date	20.3	4.5	20.3	20.3
2018 Optimization Restructuring Program | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs recognized to date	0.3	0.0	0.3	0.3
EA Integration Restructuring Program
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	8.0	21.4		71.9
Restructuring costs recognized to date	80.3	82.2	80.3	80.3
EA Integration Restructuring Program | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	7.7	21.1
Restructuring costs recognized to date	70.3	72.2	70.3	70.3
EA Integration Restructuring Program | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs recognized to date	5.1	$ 5.1	5.1	5.1
EA Integration Restructuring Program | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs recognized to date	$ 4.9		$ 4.9	$ 4.9