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Price Risk Management (Tables) | 12 Months Ended
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Dec. 31, 2013
Price Risk Management [Abstract] |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] | PGE’s Assets and Liabilities from price risk management activities consist of the following (in millions):
| As of December 31, |
| 2013 |  | 2012 |
Current assets: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | $ | 9 |  |  | $ | 1 |  |
Natural gas | 4 |  |  | 3 |  |
Total current derivative assets | 13 |  | (1) | 4 |  | (1)
Noncurrent assets: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | 1 |  |  | — |  |
Natural gas | — |  |  | 2 |  |
Total noncurrent derivative assets | 1 |  |  | 2 |  |
Total derivative assets not designated as hedging instruments | $ | 14 |  | (2) | $ | 6 |  | (2)
Total derivative assets | $ | 14 |  |  | $ | 6 |  |
Current liabilities: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | $ | 20 |  |  | $ | 44 |  |
Natural gas | 29 |  |  | 83 |  |
Total current derivative liabilities | 49 |  |  | 127 |  |
Noncurrent liabilities: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | 107 |  |  | 38 |  |
Natural gas | 34 |  |  | 35 |  |
Total noncurrent derivative liabilities | 141 |  |  | 73 |  |
Total derivative liabilities not designated as hedging instruments | $ | 190 |  |  | $ | 200 |  |
Total derivative liabilities | $ | 190 |  |  | $ | 200 |  |
(1) | Included in Other current assets on the consolidated balance sheets.
(2) | Included in Other noncurrent assets on the consolidated balance sheet.
Schedule of Derivative Instruments [Table Text Block] | PGE’s net volumes related to its Assets and Liabilities from price risk management activities resulting from its derivative transactions, which are expected to deliver or settle at various dates through 2035, were as follows (in millions):
| As of December 31,
| 2013 |  | 2012
Commodity contracts: |  |  |  |  |  |  |
Electricity | 14 |  |  | MWh |  | 11 |  |  | MWh
Natural gas | 106 |  |  | Dth |  | 86 |  |  | Dth
Foreign currency exchange | $ | 7 |  |  | Canadian |  | $ | 7 |  |  | Canadian
Price risk management assets and liabilties subject to master netting agreements [Table Text Block] | price risk management liabilities subject to master netting agreements is as follows (in millions):
|  |  |  |  |  |  |  | Gross Amounts Not Offset in |  |
|  | Gross |  | Gross |  | Net |  | Condensed Consolidated |  |
|  | Amounts |  | Amounts |  | Amounts |  | Balance Sheets |  |
|  | Recognized |  | Offset |  | Presented |  | Derivatives |  | Cash Collateral(1) |  | Net Amount
As of December 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts: |  |  |  |  |  |  |  |  |  |  |  |
Electricity(2) |  | $ | 91 |  |  | $ | — |  |  | $ | 91 |  |  | $ | (91 | ) |  | $ | — |  |  | $ | — |
Natural gas(2) |  | 1 |  |  | — |  |  | 1 |  |  | (1 | ) |  | — |  |  | — |
|  | $ | 92 |  |  | $ | — |  |  | $ | 92 |  |  | $ | (92 | ) |  | $ | — |  |  | $ | — |
As of December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts: |  |  |  |  |  |  |  |  |  |  |  |
Electricity(2) |  | $ | 20 |  |  | $ | — |  |  | $ | 20 |  |  | $ | (20 | ) |  | $ | — |  |  | $ | — |
Natural gas(2) |  | 7 |  |  | — |  |  | 7 |  |  | (7 | ) |  | — |  |  | — |
|  | $ | 27 |  |  | $ | — |  |  | $ | 27 |  |  | $ | (27 | ) |  | $ | — |  |  | $ | — |
(1) | As of December 31, 2013 and 2012, the Company had collateral posted of $7 million and $18 million, respectively, which consists entirely of letters of credit.
(2) | Included in Liabilities from price risk management activities—current and Liabilities from price risk management activities—noncurrent.
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] | Net realized and unrealized losses on derivative transactions not designated as hedging instruments are classified in Purchased power and fuel in the consolidated statements of income and were as follows (in millions):
| Years Ended December 31,
| 2013 |  | 2012 |  | 2011
Commodity contracts: |  |  |  |  |
Electricity | $ | 78 |  |  | $ | 56 |  |  | $ | 117 |
Natural Gas | 28 |  |  | 19 |  |  | 98 |
Foreign currency exchange | 1 |  |  | — |  |  | — |
Net unrealized losses and certain net realized losses presented in the table above are offset within the statement of income by the effects of regulatory accounting. Of the net loss recognized in net income for the years ended December 31, 2013, 2012, and 2011, $120 million, $42 million, and $192 million, respectively, have been offset.
Schedule of Price Risk Derivatives [Table Text Block] | Assuming no changes in market prices and interest rates, the following table indicates the year in which the net unrealized loss recorded as of December 31, 2013 related to PGE’s derivative activities would be realized as a result of the settlement of the underlying derivative instrument (in millions):
| 2014 |  | 2015 |  | 2016 |  | 2017 |  | 2018 |  | Thereafter |  | Total
Commodity contracts: |  |  |  |  |  |  |  |  |  |  |  |  |
Electricity | $ | 11 |  |  | $ | 26 |  |  | $ | 12 |  |  | $ | 5 |  |  | $ | 5 |  |  | $ | 58 |  |  | $ | 117 |
Natural gas | 25 |  |  | 10 |  |  | 14 |  |  | 10 |  |  | — |  |  | — |  |  | 59 |
Net unrealized loss | $ | 36 |  |  | $ | 36 |  |  | $ | 26 |  |  | $ | 15 |  |  | $ | 5 |  |  | $ | 58 |  |  | $ | 176 |
Schedule of Concentration of Risk, by Counterparty [Table Text Block] | Counterparties representing 10% or more of Assets and Liabilities from price risk management activities were as follows:
| As of December 31,
| 2013 |  | 2012
Assets from price risk management activities: |  |  |
Counterparty A | 53 | % |  | — | %
Counterparty B | 5 |  |  | 21 |
Counterparty C | 5 |  |  | 11 |
Counterparty D | 4 |  |  | 13 |
Counterparty E | — |  |  | 10 |
| 67 | % |  | 55 | %
Liabilities from price risk management activities: |  |  |
Counterparty F | 43 | % |  | — | %
Counterparty G | 11 |  |  | — |
Counterparty H | 6 |  |  | 24 |
Counterparty I | 5 |  |  | 10 |
Counterparty A | 2 |  |  | 14 |
| 67 | % |  | 48 | %

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