SUPPLEMENTAL BALANCE SHEET INFORMATION - Narrative (Details)	12 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Trade receivables \| Customer concentration risk \| RMS \| One customer
Trade receivables and contract assets, net
Concentration risk percentage	13.60%	20.40%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration