Basis of Presentation (Notes)	9 Months Ended
Sep. 30, 2014
Basis of Presentation [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION Nature of Business Portland General Electric Company (PGE or the Company) is a single, vertically integrated electric utility engaged in the generation, transmission, distribution, and retail sale of electricity in the state of Oregon. The Company also participates in the wholesale market by purchasing and selling electricity and natural gas in an effort to obtain reasonably-priced power for its retail customers. PGE operates as a single segment, with revenues and costs related to its business activities maintained and analyzed on a total electric operations basis. PGE’s corporate headquarters are located in Portland, Oregon and its approximately 4,000 square mile, state-approved service area allocation is located entirely within the state of Oregon, encompassing 52 incorporated cities, of which Portland and Salem are the largest. As of September 30, 2014, PGE served 843,110 retail customers with a service area population of approximately 1.7 million, comprising approximately 44% of the state’s population. Condensed Consolidated Financial Statements These condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (SEC). Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (GAAP) have been condensed or omitted pursuant to such regulations, although PGE believes that the disclosures provided are adequate to make the interim information presented not misleading. To conform with the 2014 presentation, PGE has reclassified Margin deposits of $9 million with Other current assets in the condensed consolidated balance sheet as of December 31, 2013. In addition, the Company has reclassified Power cost deferrals, net of amortization of $4 million to Other non-cash income and expenses, net in the operating activities section of the condensed consolidated statement of cash flows for the nine months ended September 30, 2013. The financial information included herein for the three and nine month periods ended September 30, 2014 and 2013 is unaudited; however, such information reflects all adjustments, consisting of normal recurring adjustments, that are, in the opinion of management, necessary for a fair presentation of the condensed consolidated financial position, condensed consolidated statements of income and comprehensive income, and condensed consolidated cash flows of the Company for these interim periods. Certain costs are estimated for the full year and allocated to interim periods based on estimates of operating time expired, benefit received, or activity associated with the interim period; accordingly, such costs may not be reflective of amounts to be recognized for a full year. Due to seasonal fluctuations in electricity sales, as well as the price of wholesale energy and natural gas, interim financial results do not necessarily represent those to be expected for the year. The financial information as of December 31, 2013 is derived from the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2013, included in Item 8 of PGE’s Annual Report on Form 10-K, filed with the SEC on February 14, 2014, which should be read in conjunction with such condensed consolidated financial statements. Comprehensive Income PGE had no material components of other comprehensive income to report for the three and nine month periods ended September 30, 2014 and 2013. Use of Estimates The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of gain or loss contingencies, as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results experienced by the Company could differ materially from those estimates. Customer Billing Matter In May 2013, PGE discovered that it had over-billed an industrial customer during a period of several years as a result of a meter configuration error. An analysis of the data determined that the Company’s revenues were overstated by approximately $3 million in 2012 and in 2011, $2 million in 2010, and $1 million in 2009. PGE believes the customer billing error is not material to any annual reporting period. The Company corrected this matter in the second quarter of 2013 as an out of period adjustment, and recorded, as a reduction to Revenues, net, a refund to the customer in the amount of $9 million. Recent Accounting Pronouncements Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers (Topic 606) (ASU 2014-09), creates a new Topic 606 and supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. ASU 2014-09 provides a five-step analysis of transactions to determine when and how revenue is recognized that consists of: i) identify the contract with the customer; ii) identify the performance obligations in the contract; iii) determine the transaction price; iv) allocate the transaction price to the performance obligations; and v) recognize revenue when or as each performance obligation is satisfied. Companies can transition to the requirements of this ASU either retrospectively or as a cumulative-effect adjustment as of the date of adoption, which is January 1, 2017 for the Company, with early adoption prohibited. The impact on the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows of the adoption of ASU 2014-09 is not known at this time. ASU 2014-15, Disclosure of Uncertainties about an Entity’s Going Concern Presumption (Topic 205) (ASU 2014-15), requires entities to perform a going concern assessment at each annual and interim reporting period by evaluating their ability to meet their financial obligations for a look-forward period of one year from the financial issuance date, or the date the financial statements are available to be issued. Disclosure is required if it is probable an entity will be unable to meet its obligations within the look-forward period, with incremental substantial doubt disclosure required if the probability is not mitigated by management’s plans. The provisions of ASU 2014-15 are effective for annual periods ending after December 15, 2016, or December 31, 2016 for PGE, and interim periods in fiscal years beginning after December 15, 2016, or January 1, 2017 for the Company. Early adoption is permitted. The adoption of the provisions of ASU 2014-15 is not expected to have a material impact on PGE’s consolidated financial position, consolidated results of operations, or consolidated cash flows.

BASIS OF PRESENTATION

Nature of Business

Portland General Electric Company (PGE or the Company) is a single, vertically integrated electric utility engaged in the generation, transmission, distribution, and retail sale of electricity in the state of Oregon. The Company also participates in the wholesale market by purchasing and selling electricity and natural gas in an effort to obtain reasonably-priced power for its retail customers. PGE operates as a single segment, with revenues and costs related to its business activities maintained and analyzed on a total electric operations basis. PGE’s corporate headquarters are located in Portland, Oregon and its approximately 4,000 square mile, state-approved service area allocation is located entirely within the state of Oregon, encompassing 52 incorporated cities, of which Portland and Salem are the largest. As of September 30, 2014, PGE served 843,110 retail customers with a service area population of approximately 1.7 million, comprising approximately 44% of the state’s population.

Condensed Consolidated Financial Statements

These condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (SEC). Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (GAAP) have been condensed or omitted pursuant to such regulations, although PGE believes that the disclosures provided are adequate to make the interim information presented not misleading.

To conform with the 2014 presentation, PGE has reclassified Margin deposits of $9 million with Other current assets in the condensed consolidated balance sheet as of December 31, 2013. In addition, the Company has reclassified Power cost deferrals, net of amortization of $4 million to Other non-cash income and expenses, net in the operating activities section of the condensed consolidated statement of cash flows for the nine months ended September 30, 2013.

The financial information included herein for the three and nine month periods ended September 30, 2014 and 2013 is unaudited; however, such information reflects all adjustments, consisting of normal recurring adjustments, that are, in the opinion of management, necessary for a fair presentation of the condensed consolidated financial position, condensed consolidated statements of income and comprehensive income, and condensed consolidated cash flows of the Company for these interim periods. Certain costs are estimated for the full year and allocated to interim periods based on estimates of operating time expired, benefit received, or activity associated with the interim period; accordingly, such costs may not be reflective of amounts to be recognized for a full year. Due to seasonal fluctuations in electricity sales, as well as the price of wholesale energy and natural gas, interim financial results do not necessarily represent those to be expected for the year. The financial information as of December 31, 2013 is derived from the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2013, included in Item 8 of PGE’s Annual Report on Form 10-K, filed with the SEC on February 14, 2014, which should be read in conjunction with such condensed consolidated financial statements.

Comprehensive Income

PGE had no material components of other comprehensive income to report for the three and nine month periods ended September 30, 2014 and 2013.

Use of Estimates

The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of gain or loss contingencies, as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results experienced by the Company could differ materially from those estimates.

Customer Billing Matter

In May 2013, PGE discovered that it had over-billed an industrial customer during a period of several years as a result of a meter configuration error. An analysis of the data determined that the Company’s revenues were overstated by approximately $3 million in 2012 and in 2011, $2 million in 2010, and $1 million in 2009. PGE believes the customer billing error is not material to any annual reporting period. The Company corrected this matter in the second quarter of 2013 as an out of period adjustment, and recorded, as a reduction to Revenues, net, a refund to the customer in the amount of $9 million.

Recent Accounting Pronouncements

Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers (Topic 606) (ASU 2014-09), creates a new Topic 606 and supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. ASU 2014-09 provides a five-step analysis of transactions to determine when and how revenue is recognized that consists of: i) identify the contract with the customer; ii) identify the performance obligations in the contract; iii) determine the transaction price; iv) allocate the transaction price to the performance obligations; and v) recognize revenue when or as each performance obligation is satisfied. Companies can transition to the requirements of this ASU either retrospectively or as a cumulative-effect adjustment as of the date of adoption, which is January 1, 2017 for the Company, with early adoption prohibited. The impact on the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows of the adoption of ASU 2014-09 is not known at this time.

ASU 2014-15, Disclosure of Uncertainties about an Entity’s Going Concern Presumption (Topic 205) (ASU 2014-15), requires entities to perform a going concern assessment at each annual and interim reporting period by evaluating their ability to meet their financial obligations for a look-forward period of one year from the financial issuance date, or the date the financial statements are available to be issued. Disclosure is required if it is probable an entity will be unable to meet its obligations within the look-forward period, with incremental substantial doubt disclosure required if the probability is not mitigated by management’s plans. The provisions of ASU 2014-15 are effective for annual periods ending after December 15, 2016, or December 31, 2016 for PGE, and interim periods in fiscal years beginning after December 15, 2016, or January 1, 2017 for the Company. Early adoption is permitted. The adoption of the provisions of ASU 2014-15 is not expected to have a material impact on PGE’s consolidated financial position, consolidated results of operations, or consolidated cash flows.