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Commitments and Contingencies (Insurance Recovery) (Details) - Southern California Edison Company - 2017/2018 Wildfire/Mudslide Events - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
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Feb. 27, 2020 | Dec. 31, 2019
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward] |  |
Balance at December 31, 2018 |  | $ 2,000
Insurance recoveries |  | (290)
Balance at December 31, 2019 |  | $ 1,710
Subsequent event |  |
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward] |  |
Insurance recoveries | $ (55) |

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- Definition Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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