Commitments and Guarantees Schdule of Long term contracts for purchase of electric power (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) MW	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Priest Rapids and Wanapum [Member]
Long-term Contract for Purchase of Electric Power [Line Items]
Revenue Bonds issued by the Public Utility Districts	$ 1,883
PGE Share of Output	8.60%
PGE Share of Capacity | MW	163
commitment costs	$ 77	$ 45	$ 26
Wells [Member]
Long-term Contract for Purchase of Electric Power [Line Items]
Revenue Bonds issued by the Public Utility Districts	$ 347
PGE Share of Output	8.10%
PGE Share of Capacity | MW	16
commitment costs	$ 11	$ 12	$ 13