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Capitalization (Details) - $ / shares | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 22, 2018
--- | --- | --- | ---
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 5,000,000 | 5,000,000 |
Par Value (in dollars per share) | $ 100 | $ 100 | $ 100
Penn |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 1,200,000 |  |
Par Value (in dollars per share) | $ 100 |  |
CEI |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 4,000,000 |  |
JCP&L |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 15,600,000 |  |
ME |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 10,000,000 |  |
PN |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 11,435,000 |  |
PE |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 10,000,000 |  |
Par Value (in dollars per share) | $ 0.01 |  |
WP |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 32,000,000 |  |
Preferred Stock With Par Value $100 | OE |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 6,000,000 |  |
Par Value (in dollars per share) | $ 100 |  |
Preferred Stock With Par Value $100 | TE |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 3,000,000 |  |
Par Value (in dollars per share) | $ 100 |  |
Preferred Stock With Par Value $100 | MP |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 940,000 |  |
Par Value (in dollars per share) | $ 100 |  |
Preferred Stock With Par Value $25 | OE |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 8,000,000 |  |
Par Value (in dollars per share) | $ 25 |  |
Preferred Stock With Par Value $25 | TE |  |  |
Preferred stock and preference stock authorizations |  |  |
Shares Authorized (in shares) | 12,000,000 |  |
Par Value (in dollars per share) | $ 25 |  |
Preference Stock | OE |  |  |
Preferred stock and preference stock authorizations |  |  |
Preference Shares Authorized (in shares) | 8,000,000 |  |
Preference Stock | CEI |  |  |
Preferred stock and preference stock authorizations |  |  |
Preference Shares Authorized (in shares) | 3,000,000 |  |
Preference Stock | TE |  |  |
Preferred stock and preference stock authorizations |  |  |
Preference Shares Authorized (in shares) | 5,000,000 |  |
Preference Stock Par Value (in dollars per share) | $ 25 |  |

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