Variable Interest Entities	12 Months Ended
Dec. 31, 2015
Variable interest Entities [Abstract]
VariableInterestEntities [Text Block]	VARIABLE INTEREST ENTITIES PGE has determined that as of December 31, 2015 it is the primary beneficiary of a VIE (two as of December 31, 2014), and, therefore, consolidates the VIE within the Company’s consolidated financial statements. The entity was formed for the sole purpose of designing, developing, constructing, owning, maintaining, operating, and financing photovoltaic solar power facilities located on real property owned by third parties, and selling the energy generated by the facilities. The Company is the Managing Member and a financial institution is the Investor Member in the Limited Liability Company (LLC), holding equity interests of less than 1% and more than 99%, respectively, in the entity. PGE has determined that its interest in this VIE contains the obligation to absorb the variability of the entity that could potentially be significant to the VIE, and the Company has the power to direct the activities that most significantly affect the entity’s economic performance. Determining whether PGE is the primary beneficiary of a VIE is complex, subjective, and requires the use of judgments and assumptions. Significant judgments and assumptions made by PGE in determining that it is the primary beneficiary of this LLC include the following: i) PGE has the experience to own and operate electric generating facilities and is authorized to operate the LLC pursuant to the operating agreement, and, therefore, PGE has control over the most significant activities of the LLC; ii) PGE expects to own 100% of the LLC shortly after five years have elapsed from when the facility was placed in service, at which time the facility will have approximately 75% of its estimated useful life remaining; and iii) based on projections prepared in accordance with the operating agreement, PGE expects to absorb a majority of any expected losses of the LLC. Included in PGE’s consolidated balance sheets as of December 31, 2015 and 2014 are LLC net assets of $3 million and $4 million, respectively, primarily comprised of Electric utility plant. These assets can only be used to settle the obligations of the consolidated VIE and its creditors have no recourse to the general credit of PGE. In January 2016, PGE acquired the equity interest held by the Investor Member of the LLC pursuant to the terms of the operating agreement. The transaction did not have a significant impact to the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows.

VARIABLE INTEREST ENTITIES

PGE has determined that as of December 31, 2015 it is the primary beneficiary of a VIE (two as of December 31, 2014), and, therefore, consolidates the VIE within the Company’s consolidated financial statements. The entity was formed for the sole purpose of designing, developing, constructing, owning, maintaining, operating, and financing photovoltaic solar power facilities located on real property owned by third parties, and selling the energy generated by the facilities. The Company is the Managing Member and a financial institution is the Investor Member in the Limited Liability Company (LLC), holding equity interests of less than 1% and more than 99%, respectively, in the entity. PGE has determined that its interest in this VIE contains the obligation to absorb the variability of the entity that could potentially be significant to the VIE, and the Company has the power to direct the activities that most significantly affect the entity’s economic performance.

Determining whether PGE is the primary beneficiary of a VIE is complex, subjective, and requires the use of judgments and assumptions. Significant judgments and assumptions made by PGE in determining that it is the primary beneficiary of this LLC include the following: i) PGE has the experience to own and operate electric generating facilities and is authorized to operate the LLC pursuant to the operating agreement, and, therefore, PGE has control over the most significant activities of the LLC; ii) PGE expects to own 100% of the LLC shortly after five years have elapsed from when the facility was placed in service, at which time the facility will have approximately 75% of its estimated useful life remaining; and iii) based on projections prepared in accordance with the operating agreement, PGE expects to absorb a majority of any expected losses of the LLC.

Included in PGE’s consolidated balance sheets as of December 31, 2015 and 2014 are LLC net assets of $3 million and $4 million, respectively, primarily comprised of Electric utility plant. These assets can only be used to settle the obligations of the consolidated VIE and its creditors have no recourse to the general credit of PGE.

In January 2016, PGE acquired the equity interest held by the Investor Member of the LLC pursuant to the terms of the operating agreement. The transaction did not have a significant impact to the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows.