Statement of Cash Flows, Supplemental Disclosures	3 Months Ended
Dec. 31, 2020
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, 2020 and 2019, were $273 million and $254 million, respectively, and are excluded from the Statements of Consolidated Cash Flows for the three months ended December 31, 2020 and 2019, as non-cash investing activities.

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.

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

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