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DERIVATIVE INSTRUMENTS - ADDITIONAL INFORMATION (Details) - certificate certificate in Millions	Jun. 30, 2025	Sep. 30, 2024
Physical commodity contracts | ES
Derivative [Line Items]
Number of SRECs (in certificates)	1.1	1.2

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Number of Solar Renewable Energy Certificates

+ References

No definition available.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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