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Variable Interest Entities (Textual) (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 27, 2017 USD ($) | Jun. 30, 2017 USD ($) $ / shares MW | Jun. 30, 2016 USD ($) MW | Jun. 30, 2017 USD ($) $ / shares MW | Jun. 30, 2016 USD ($) MW
Variable Interest Entity |  |  |  |  |
Redemption of preference stock |  |  |  |  | $ 125,000,000
Southern California Edison |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Redemption of preference stock |  |  |  |  | $ 125,000,000
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | SCE Power Purchase Contracts |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Power generating capacity (in megawatts) | MW |  | 4,900 | 4,349 | 4,900 | 4,349
Payments to unconsolidated VIEs for power purchase contracts |  | $ 106,000,000 | $ 92,000,000 | $ 246,000,000 | $ 219,000,000
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust I |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Common stock |  | 10,000 |  | $ 10,000 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust I | Trust Securities |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.625% |
Liquidation preference |  | $ 475,000,000 |  | $ 475,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 25 |  | $ 25 |
Common stock |  | $ 10,000 |  | $ 10,000 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust I | Trust Securities | Subsequent event |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Redemption of preference stock | $ 10,000 |  |  |  |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust I | Series F Preferred Stock |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.625% |
Liquidation preference |  | $ 475,000,000 |  | $ 475,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 2,500 |  | $ 2,500 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust II |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Common stock |  | $ 10,000 |  | $ 10,000 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust II | Trust Securities |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.10% |
Liquidation preference |  | $ 400,000,000 |  | $ 400,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 25 |  | $ 25 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust II | Series G Preferred Stock |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.10% |
Liquidation preference |  | $ 400,000,000 |  | $ 400,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 2,500 |  | $ 2,500 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust III |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Common stock |  | $ 10,000 |  | $ 10,000 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust III | Trust Securities |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.75% |
Liquidation preference |  | $ 275,000,000 |  | $ 275,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 25 |  | $ 25 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust III | Series H Preferred Stock |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.75% |
Liquidation preference |  | $ 275,000,000 |  | $ 275,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 2,500 |  | $ 2,500 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust IV |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Common stock |  | $ 10,000 |  | $ 10,000 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust IV | Trust Securities |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.375% |
Liquidation preference |  | $ 325,000,000 |  | $ 325,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 25 |  | $ 25 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust IV | Series J Preferred Stock |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.375% |
Liquidation preference |  | $ 325,000,000 |  | $ 325,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 2,500 |  | $ 2,500 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust V |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Common stock |  | $ 10,000 |  | $ 10,000 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust V | Trust Securities |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.45% |
Liquidation preference |  | $ 300,000,000 |  | $ 300,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 25 |  | $ 25 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust V | Series K Preferred Stock |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.45% |
Liquidation preference |  | $ 300,000,000 |  | $ 300,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 2,500 |  | $ 2,500 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust VI |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Common stock |  | $ 10,000 |  | $ 10,000 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust VI | Trust Securities |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.00% |
Liquidation preference |  | $ 475,000,000 |  | $ 475,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 25 |  | $ 25 |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust VI | Trust Securities | Subsequent event |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Redemption of preference stock | $ 475,000,000 |  |  |  |
Southern California Edison | Variable Interest Entity, Not Primary Beneficiary | Trust VI | Series L Preferred Stock |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Security dividend rate |  |  |  | 5.00% |
Liquidation preference |  | $ 475,000,000 |  | $ 475,000,000 |
Liquidation value (in dollars per share) | $ / shares |  | $ 2,500 |  | $ 2,500 |

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