RESTRUCTURING CHARGES (Details 1) - USD ($) $ in Millions	12 Months Ended			73 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Accrued Restructuring Costs	$ 3.5	$ 3.1	$ 8.2	$ 3.5	$ 5.1
Restructuring charges	9.0	76.5	21.9	267.5
Amounts utilized	(8.6)	(81.6)	(18.8)
Employee severance and related benefit costs
Restructuring Cost and Reserve [Line Items]
Accrued Restructuring Costs	1.8	0.0	1.5	1.8	1.8
Restructuring charges	2.2	2.1	1.7	14.2
Amounts utilized	(0.4)	(3.6)	(2.0)
Lease and other contract termination costs
Restructuring Cost and Reserve [Line Items]
Accrued Restructuring Costs	1.7	3.1	6.0	1.7	3.3
Restructuring charges	1.4	0.9	5.6	48.7
Amounts utilized	(2.8)	(3.8)	(2.9)
Facility exit costs
Restructuring Cost and Reserve [Line Items]
Accrued Restructuring Costs	0.0	0.0	0.7	0.0	0.0
Restructuring charges	5.4	14.6	12.0	59.8
Amounts utilized	(5.4)	(15.3)	(11.3)
Write-off of equipment and facility
Restructuring Cost and Reserve [Line Items]
Accrued Restructuring Costs	0.0	0.0	0.0	0.0	$ 0.0
Restructuring charges	0.0	58.9	2.6	$ 143.1
Amounts utilized	$ 0.0	$ (58.9)	$ (2.6)