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Regulatory Matters - Pennsylvania and West Virginia (Details) $ in Millions |  |  |  |  |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 17, 2020 | Aug. 30, 2019 USD ($) | Aug. 21, 2019 USD ($) | Jun. 01, 2019 proposal MW | May 23, 2019 USD ($) | Mar. 31, 2016 USD ($) | Oct. 11, 2019 MW
Pennsylvania | ME |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Approved amount of rate increase |  |  |  |  | $ 45.0 |  |
Pennsylvania | Penn |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Approved amount of rate increase |  |  |  |  | 26.0 |  |
Pennsylvania | WP |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Approved amount of rate increase |  |  |  |  | 51.0 |  |
Pennsylvania | PN |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Approved amount of rate increase |  |  |  |  | $ 25.0 |  |
Pennsylvania | PPUC | Pennsylvania Companies | DSP |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Number of RFP's | proposal |  |  |  | 2 |  |  |
Project term |  |  |  | 2 years |  |  |
New hourly priced default service threshold (in MW's) | MW |  |  |  | 0.1 |  |  |
Pennsylvania | PPUC | Pennsylvania Companies | DSP | 3 Month Period |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Energy contract term |  |  |  | 3 months |  |  |
Pennsylvania | PPUC | Pennsylvania Companies | DSP | 12 Month Period |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Energy contract term |  |  |  | 12 months |  |  |
Pennsylvania | PPUC | Pennsylvania Companies | DSP | 24 Month Period |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Energy contract term |  |  |  | 24 months |  |  |
Pennsylvania | PPUC | Pennsylvania Companies | EE&C |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Approved amount of rate increase |  |  |  |  |  | $ 390.0 |
Pennsylvania | PPUC | Pennsylvania Companies | New LTIP's |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Requested rate increase (decrease) |  | $ 572.0 |  |  |  |  |
Pennsylvania | PPUC | Pennsylvania Companies | Wavier of Distribution System Improvement Charge Cap |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Requested rate increase (decrease) (percent) |  | 11.81% |  |  |  |  |
West Virginia | WVPSC | MP and PE | ENEC |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Requested rate increase (decrease) |  |  | $ (6.1) |  |  |  |
Requested rate increase (decrease) (percent) |  |  | (0.40%) |  |  |  |
West Virginia | WVPSC | MP and PE | Termination Agreement of PURPA Power Purchase Agreement |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Proposed potential plant disposal capacity (in MW's) | MW |  |  |  |  |  |  | 50
West Virginia | WVPSC | MP and PE | Vegetation Management Surcharge Rates |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Requested rate increase (decrease) |  |  | $ 7.6 |  |  |  |
Requested rate increase (decrease) (percent) |  |  | 0.05% |  |  |  |
Subsequent Event | Pennsylvania | PPUC | Pennsylvania Companies | Wavier of Distribution System Improvement Charge Cap |  |  |  |  |  |  |
Regulatory Matters [Line Items] |  |  |  |  |  |  |
Proposed settled recoverability cap | 7.50% |  |  |  |  |  |

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