v3.25.3

Fair Value of Financial Instruments Unobservable Input Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance as of the beginning of the period	$ 31	$ 45	$ 34	$ 45
Net realized and unrealized (gains)/losses	(1)	15	3	15
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3		2		2
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3	5
Transfers out of Level 3 to Level 2			(2)
Balance as of the end of the period	$ 35	$ 62	35	62
Gain (Loss) from Price Risk Management Activity			$ 4	$ 1

Net Liabilities From Price Risk Management Activities Classified as Level 3

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- Definition

Realized and Unrealized Gains and Losses, Net, Commodity Contracts

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into level 3 of the fair value hierarchy.

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- Definition

Gain (loss) incurred in risk management activities.

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PORTLAND GENERAL ELECTRIC CO /OR/ 10-Q