RESTRUCTURING CHARGES - Summary of the restructuring and other related charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 92,468	$ 16,782	$ 21,418
Personnel related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	16,772	4,124	3,190
Facilities, exit costs and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	16,764	7,827	11,573
Non-cash facility and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	58,932	4,831	6,655
Cost of goods and services
Restructuring Cost and Reserve [Line Items]
Restructuring charges	82,028	7,964	7,923
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 10,440	$ 8,818	$ 13,495