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Basis of Presentation Basis of Presentation (Policies)	12 Months Ended
	Dec. 31, 2023
Basis of Presentation [Abstract]
Consolidation, Policy [Policy Text Block]	The consolidated financial statements include the accounts of PGE and its wholly-owned subsidiaries. The Company’s ownership share of direct expenses and costs related to jointly-owned generating plants are also included in its consolidated financial statements. For further information on PGE’s jointly-owned plant, see Note 18, Jointly-Owned Plant. Intercompany balances and transactions have been eliminated. Miscellaneous Income, Net Miscellaneous income, net includes $19 million, $8 million, and $6 million in interest income from regulatory assets for the year ended December 31, 2023, 2022, and 2021, respectively, and $7 million realized and unrealized gains, $4 million realized and unrealized losses, and $5 million realized and unrealized gains on the non-qualified benefit plan trust assets. The remaining activity is comprised of $4 million in other miscellaneous income for the year ended December 31, 2023, $13 million in other miscellaneous income in 2022, which included an $11 million settlement gain related to the buyout of the Non-represented Retiree Medical Plan, and $2 million in other miscellaneous expense in 2021.

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Basis of Presentation [Abstract]

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Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483426/235-10-50-4

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-1

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