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Statement of Cash Flows, Supplemental Disclosures	6 Months Ended
	Mar. 31, 2023
Supplemental Cash Flow Elements [Abstract]
Cash Flow, Supplemental Disclosures	Supplemental Cash Flow Information     Construction in progress and asset retirement obligation project accruals and nuclear fuel expenditures included in Accounts payable and accrued liabilities at March 31, 2023 and 2022, were $435 million and $503 million, respectively, and are excluded from the Consolidated Statements of Cash Flows for the six months ended March 31, 2023 and 2022, as non-cash investing activities. Cash flows from swap contracts that are accounted for as hedges are classified in the same category as the item being hedged or on a basis consistent with the nature of the instrument.

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- Definition

The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-URI https://asc.fasb.org/topic&trid=2134446

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- References

No definition available.

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