OTHER COMPREHENSIVE INCOME (LOSS) - Summary of OCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	$ 12,196	$ (3,044)
Total other comprehensive income (loss), tax	23	293
Total other comprehensive income (loss), net of taxes	12,219	(2,751)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	11,937	(2,319)
Total other comprehensive income (loss), tax	0	0
Total other comprehensive income (loss), net of taxes	11,937	(2,319)
Pension and other defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	1,088	846
Total other comprehensive income (loss), tax	(226)	(178)
Total other comprehensive income (loss), net of taxes	862	668
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	(829)	(1,571)
Total other comprehensive income (loss), tax	249	471
Total other comprehensive income (loss), net of taxes	$ (580)	$ (1,100)