RESTRUCTURING INITIATIVES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring initiatives	$ 10,223	$ 3,415	$ 18,771	$ 15,585
Capital expenditures			216,689	173,365
Business Transformation
Restructuring Cost and Reserve [Line Items]
Restructuring initiatives	10,200	$ 3,400	18,800	$ 15,600
Expected implementation costs	135,000		135,000
Cumulative expense incurred	$ 131,800		131,800
Capital expenditures			$ 50,000