INCOME TAXES - NARRATIVE (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact the ETR	$ 144,300,000	$ 158,100,000
Unrecognized tax benefits, increase resulting from current period tax positions	1,200,000
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	12,400,000
Unrecognized tax benefits, decrease from acquisition	2,900,000
Unrecognized tax benefits, income tax penalties and interest accrued	28,000,000.0	$ 26,600,000
Minimum
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits is reasonably possible	0
Maximum
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits is reasonably possible	$ 47,800,000