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Related Parties Related Parties (Tables)

12 Months Ended

Sep. 30, 2025

Related Party Transactions [Abstract]

Related Party Transactions

Transactions with agencies of the federal government were as follows:

Related Party Transactions At or for the years ended September 30 (in millions)
			2025						2024						2023
Revenue from sales of electricity			$	132					$	118					$	120
Other income			309						273						282
Expenditures
Operating expenses			264						241						234
Additions to property, plant, and equipment			13						12						8
Cash and cash equivalents			31						31						31
Accounts receivable, net			89						81						87
Investment funds			534						495						391
Long-term accounts receivable			43						35						38
Accounts payable and accrued liabilities			41						45						42
Long-term power bonds, net			4						3						1
Return on power program appropriation investment			8						7						6

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- References

No definition available.

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- Definition

Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

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