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RESTRUCTURING INITIATIVES - Business Transformation Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring reserve
Restructuring reserve, balance at the beginning of the period			$ 10,489
Net Charges	$ 4,876	$ 7,331	8,548	$ 12,170
Cash Paid			(13,047)
Interest and FX Impact			(156)
Restructuring reserve, balance at the end of the period	5,834		5,834
Employee severance
Restructuring reserve
Restructuring reserve, balance at the beginning of the period			7,956
Net Charges			144
Cash Paid			(3,616)
Interest and FX Impact			(130)
Restructuring reserve, balance at the end of the period	4,354		4,354
Professional fees and other costs
Restructuring reserve
Restructuring reserve, balance at the beginning of the period			2,533
Net Charges			8,404
Cash Paid			(9,431)
Interest and FX Impact			(26)
Restructuring reserve, balance at the end of the period	$ 1,480		$ 1,480