RESTRUCTURING INITIATIVES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring initiatives	$ 3,672	$ 4,839
Capital expenditures	63,884	61,625
Business Transformation
Restructuring Cost and Reserve [Line Items]
Restructuring initiatives	3,700	$ 4,800
Expected implementation costs	125,000
Cumulative expense incurred	116,700
Capital expenditures	$ 50,000