RESTRUCTURING INITIATIVES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring initiatives	$ 4,876	$ 7,331	$ 8,548	$ 12,170
Capital expenditures			137,039	122,986
Business Transformation
Restructuring Cost and Reserve [Line Items]
Restructuring initiatives	4,900	$ 7,300	8,500	$ 12,200
Expected implementation costs	125,000		125,000
Cumulative expense incurred	$ 121,500		121,500
Capital expenditures			$ 50,000