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Risk Management Counterparties Representing 10% or More of Assets and Liabilities from price risk management activities (Details) | Mar. 31, 2021 | Dec. 31, 2020
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Assets from price risk management activities: |  |
Counterparty A | 14.00% | 12.00%
Counterparty B | 13.00% | 17.00%
Counterparty C | 17.00% | 21.00%
Counterparty D | 14.00% | 16.00%
Concentration of Risk, Derivative Instruments, Assets | 58.00% | 66.00%
Liabilities from price risk management activities: |  |
Counterparty E | 89.00% | 93.00%

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- Definition Assets from price risk management activities: [Abstract] + References No definition available. + Details
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- Definition Represents aggregate of individually significant counterparties of total assets arising from derivative instruments from price risk management activities. + References No definition available. + Details
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- Definition Represents aggregate of individually significant counterparties of total liabilities arising from derivative instruments from price risk management activities. + References No definition available. + Details
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- Definition Individually significant counterparty of total assets arising from derivative instruments from price risk management activities. + References No definition available. + Details
Name: | por_CounterpartyA
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- Definition Individually significant counterparty of total assets arising from derivative instruments from price risk management activities. + References No definition available. + Details
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- Definition Individually significant counterparty of total assets arising from derivative instruments from price risk management activities. + References No definition available. + Details
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- Definition Counterparty D + References No definition available. + Details
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- Definition Liabilities from price risk management activities: [Abstract] + References No definition available. + Details
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