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Asset Retirement Obligations (Tables)

6 Months Ended

Mar. 31, 2025

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation Activity

Asset Retirement Obligation Activity (in millions)
			Nuclear						Non-nuclear						Total
Balance at September 30, 2024			$	3,814					$	6,992					$	10,806		(1)
Settlements			(9)						(114)						(123)
Revisions in estimate (non-cash)			2						(24)						(22)
Accretion (recorded as regulatory asset)			86						131						217
Balance at March 31, 2025			$	3,893					$	6,985					$	10,878		(1)

Note

(1) Includes $316 million and $283 million at March 31, 2025, and September 30, 2024, respectively, in Current liabilities.

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- References

No definition available.

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- Definition

Tabular disclosure of the carrying amount of a liability for asset retirement obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Paragraph 1
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

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