POST EMPLOYMENT BENEFITS - Discount rate and Rate of compensation increases (Details)	12 Months Ended
Sep. 30, 2022
POST EMPLOYMENT BENEFITS
Discount rate	5.33%
Percentage of long-term rate of return assumption	4.96%

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant