XML 51 R38.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Price Risk Management (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
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, |
| 2016 |  | 2015 |
Current assets: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | $ | 6 |  |  | $ | 7 |  |
Natural gas | 12 |  |  | 3 |  |
Total current derivative assets | 18 |  | (1) | 10 |  | (1)
Noncurrent assets: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | 1 |  |  | — |  |
Natural gas | 4 |  |  | — |  |
Total noncurrent derivative assets | 5 |  | (2) | — |  | (2)
Total derivative assets not designated as hedging instruments | $ | 23 |  |  | $ | 10 |  |
Total derivative assets | $ | 23 |  |  | $ | 10 |  |
Current liabilities: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | $ | 12 |  |  | $ | 36 |  |
Natural gas | 32 |  |  | 94 |  |
Total current derivative liabilities | 44 |  |  | 130 |  |
Noncurrent liabilities: |  |  |  |
Commodity contracts: |  |  |  |
Electricity | 106 |  |  | 97 |  |
Natural gas | 19 |  |  | 64 |  |
Total noncurrent derivative liabilities | 125 |  |  | 161 |  |
Total derivative liabilities not designated as hedging instruments | $ | 169 |  |  | $ | 291 |  |
Total derivative liabilities | $ | 169 |  |  | $ | 291 |  |
(1) | Included in Other current assets on the consolidated balance sheets.
(2) | Included in Other noncurrent assets on the consolidated balance sheets.
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,
| 2016 |  | 2015
Commodity contracts: |  |  |  |  |  |  |
Electricity | 8 |  |  | MWh |  | 12 |  |  | MWh
Natural gas | 107 |  |  | Dth |  | 124 |  |  | Dth
Foreign currency exchange | $ | 22 |  |  | Canadian |  | $ | 7 |  |  | Canadian
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 (gains) 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,
| 2016 |  | 2015 |  | 2014
Commodity contracts: |  |  |  |  |
Electricity | $ | 34 |  |  | $ | 72 |  |  | $ | 13 |
Natural Gas | (56 | ) |  | 103 |  |  | 72 |
Foreign currency exchange | — |  |  | 1 |  |  | — |
Net unrealized and certain net realized losses (gains) presented in the table above are offset within the consolidated statements of income by the effects of regulatory accounting. Net (gains) of $13 million and net losses of $160 million and $83 million for the years ended December 31, 2016, 2015, and 2014, respectively, have been offset in Net income.
Schedule of Price Risk Derivatives [Table Text Block] | Assuming no changes in market prices and interest rates, the following table presents the year in which the net unrealized loss recorded as of December 31, 2016 related to PGE’s derivative activities would be realized as a result of the settlement of the underlying derivative instrument (in millions):
| 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | Thereafter |  | Total
Commodity contracts: |  |  |  |  |  |  |  |  |  |  |  |  |
Electricity | $ | 6 |  |  | $ | 7 |  |  | $ | 7 |  |  | $ | 7 |  |  | $ | 7 |  |  | $ | 77 |  |  | $ | 111 |
Natural gas | 20 |  |  | 7 |  |  | 6 |  |  | 2 |  |  | — |  |  | — |  |  | 35 |
Net unrealized loss | $ | 26 |  |  | $ | 14 |  |  | $ | 13 |  |  | $ | 9 |  |  | $ | 7 |  |  | $ | 77 |  |  | $ | 146 |
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,
| 2016 |  | 2015
Assets from price risk management activities: |  |  |
Counterparty A | 22 | % |  | 5 | %
Counterparty B | 17 |  |  | 8 |
Counterparty C | 12 |  |  | 8 |
Counterparty D | 8 |  |  | 10 |
Counterparty E | 1 |  |  | 59 |
| 60 | % |  | 90 | %
Liabilities from price risk management activities: |  |  |
Counterparty F | 66 | % |  | 36 | %
Counterparty C | 7 | % |  | 10 | %
Counterparty B | 5 | % |  | 10 | %
| 78 | % |  | 56 | %

X
- Definition Price Risk Management [Abstract] + References No definition available. + Details
Name: | por_PriceRiskManagementAbstract
Namespace Prefix: | por_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of counterparties representing 10% or more of assets and liabilities from price risk management activities recorded in the reporting entity's statement of financial position. + References No definition available. + Details
Name: | por_ScheduleOfConcentrationOfRiskByCounterpartyTableTextBlock
Namespace Prefix: | por_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 + Details
Name: | us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41641-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41678-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41638-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579240-113959 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41620-113959 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ScheduleOfDerivativeInstrumentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for other derivative instruments not designated as hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
Name: | us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of price risk derivatives, including, but not limited to, the fair value of the derivatives, statement of financial position location, and statement of financial performance location of these instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
Name: | us-gaap_ScheduleOfPriceRiskDerivativesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration