INCOME TAXES - Schedule of Reconciliations of the U.S. Federal Statutory Tax Rate (Details)	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	21.00%	21.00%	21.00%
State and local taxes, net of U.S. federal tax benefit	0.60%	0.80%	0.70%
Non-U.S. rate differential	2.00%	0.80%	1.20%
Non-U.S. tax holidays	(1.70%)	(0.80%)	(1.10%)
Research and development credits	(1.20%)	(0.50%)	(0.50%)
Foreign derived intangible income	(3.80%)	(2.60%)	(2.00%)
U.S. taxation of Non-U.S. Earnings	2.10%	1.30%	0.40%
Subsidiary restructuring	(2.90%)	0.00%	0.80%
Test & Measurement purchase accounting	0.017	0	0
Russia business exit	0.00%	0.20%	2.00%
Other	2.80%	1.90%	0.10%
Effective income tax rate	20.60%	22.10%	22.60%