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Risk Management Activities and Derivative Transactions (Details) - Commodity Derivatives Under the FHP $ in Millions	12 Months Ended
	Sep. 30, 2023 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Increase (Decrease) in Derivative Assets	$ 301

X

- References

No definition available.

+ Details

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- Definition

The increase (decrease) during the period in the carrying value of derivative instruments reported as assets that are due to be disposed of within one year (or the normal operating cycle, if longer).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

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