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Regulatory Matters - Distribution Rate Orders (Details) | 12 Months Ended
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Dec. 31, 2019
CEI |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 51.00%
Allowed Equity | 49.00%
Approved ROE | 10.50%
ME |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 48.80%
Allowed Equity | 51.20%
MP |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 54.00%
Allowed Equity | 46.00%
JCP&L |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 55.00%
Allowed Equity | 45.00%
Approved ROE | 9.60%
OE |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 51.00%
Allowed Equity | 49.00%
Approved ROE | 10.50%
PN |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 47.40%
Allowed Equity | 52.60%
Penn |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 49.90%
Allowed Equity | 50.10%
Penn | West Virginia |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 54.00%
Allowed Equity | 46.00%
Penn | Maryland |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 47.00%
Allowed Equity | 53.00%
Approved ROE | 9.65%
TE |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 51.00%
Allowed Equity | 49.00%
Approved ROE | 10.50%
WP |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 49.70%
Allowed Equity | 50.30%
ATSI | Regulated Transmission |
Public Utilities, General Disclosures [Line Items] |
Approved ROE | 10.38%
MAIT | Regulated Transmission |
Public Utilities, General Disclosures [Line Items] |
Allowed Debt | 60.00%
Approved ROE | 10.30%
TrAIL | Regulated Transmission | TrAIL the Line and Black Oak SVC |
Public Utilities, General Disclosures [Line Items] |
Approved ROE | 12.70%
TrAIL | Regulated Transmission | All Other Projects |
Public Utilities, General Disclosures [Line Items] |
Approved ROE | 11.70%

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