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Statement of Cash Flows, Supplemental Disclosures	3 Months Ended
	Dec. 31, 2023
Supplemental Cash Flow Elements [Abstract]
Cash Flow, Supplemental Disclosures	Supplemental Cash Flow Information Construction in progress and nuclear fuel expenditures included in Accounts payable and accrued liabilities at December 31, 2023 and 2022, were $552 million and $363 million, respectively, and are excluded from the Consolidated Statements of Cash Flows for the three months ended December 31, 2023 and 2022, as non-cash investing activities. ARO project accruals included in Accounts payable and accrued liabilities at December 31, 2023 and 2022 were $46 million and $62 million, respectively, and are excluded from the Consolidated Statements of Cash Flows for the three months ended December 31, 2023 and 2022, as non-cash operating 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
-Topic 230
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//230/tableOfContent

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- References

No definition available.

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