RESTRUCTURING CHARGES - Summary of the Restructuring and Other Related Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 4,766	$ 7,502	$ 6,482	$ 10,581
Personnel related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,878	722	2,138	1,084
Facilities & Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,122	4,283	2,289	6,807
Facility and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,766	2,497	2,055	2,690
Cost of goods and services
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,455	3,337	2,777	3,878
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,311	$ 4,165	$ 3,705	$ 6,703