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Variable Interest Entities (Textual) (Details) - Southern California Edison - VIE | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 USD ($) MW | Jun. 30, 2019 USD ($) MW | Jun. 30, 2020 USD ($) MW | Jun. 30, 2019 USD ($) MW | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) $ / shares
SCE Power Purchase Contracts |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Power generating capacity (in megawatts) | MW | 6,583 | 4,874 | 6,583 | 4,874 |  |  |  |  |
Payments to unconsolidated VIEs for power purchase contracts | $ 150,000,000 | $ 122,000,000 | $ 301,000,000 | $ 275,000,000 |  |  |  |  |
Trust II | Trust Securities |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  |  |  |  | 5.10%
Liquidation preference | 400,000,000 | 400,000,000 | 400,000,000 | 400,000,000 |  |  |  |  | $ 400,000,000
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 25
Common stock |  |  |  |  |  |  |  |  | $ 10,000
Redemption of trust securities |  |  | 10,000 | 10,000 |  |  |  |  |
Trust II | Series G Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  |  |  |  | 5.10%
Liquidation preference | 400,000,000 | 400,000,000 | 400,000,000 | 400,000,000 |  |  |  |  | $ 400,000,000
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 2,500
Trust III | Trust Securities |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  |  |  | 5.75% |
Liquidation preference | 275,000,000 | 275,000,000 | 275,000,000 | 275,000,000 |  |  |  | $ 275,000,000 |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | 25
Redemption of trust securities |  |  | 10,000 | 10,000 |  |  |  |  |
Trust III | Series G Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | 2,500
Trust III | Series H Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  |  |  | 5.75% |
Liquidation preference | 275,000,000 | 275,000,000 | 275,000,000 | 275,000,000 |  |  |  | $ 275,000,000 |
Trust IV | Trust Securities |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  |  | 5.375% |  |
Liquidation preference | 325,000,000 | 325,000,000 | 325,000,000 | 325,000,000 |  |  | $ 325,000,000 |  |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | 25
Redemption of trust securities |  |  | 10,000 | 10,000 |  |  |  |  |
Trust IV | Series G Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | 2,500
Trust IV | Series J Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  |  | 5.375% |  |
Liquidation preference | 325,000,000 | 325,000,000 | 325,000,000 | 325,000,000 |  |  | $ 325,000,000 |  |
Trust V | Trust Securities |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  | 5.45% |  |  |
Liquidation preference | 300,000,000 | 300,000,000 | 300,000,000 | 300,000,000 |  | $ 300,000,000 |  |  |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | 25
Redemption of trust securities |  |  | 10,000 | 10,000 |  |  |  |  |
Trust V | Series G Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | 2,500
Trust V | Series K Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  |  | 5.45% |  |  |
Liquidation preference | 300,000,000 | 300,000,000 | 300,000,000 | 300,000,000 |  | $ 300,000,000 |  |  |
Trust VI | Trust Securities |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  | 5.00% |  |  |  |
Liquidation preference | 475,000,000 | 475,000,000 | 475,000,000 | 475,000,000 | $ 475,000,000 |  |  |  |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | 25
Redemption of trust securities |  |  | 10,000 | 10,000 |  |  |  |  |
Trust VI | Series G Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Liquidation value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 2,500
Trust VI | Series L Preferred Stock |  |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |  |
Security dividend rate |  |  |  |  | 5.00% |  |  |  |
Liquidation preference | $ 475,000,000 | $ 475,000,000 | $ 475,000,000 | $ 475,000,000 | $ 475,000,000 |  |  |  |

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