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Commitments and Contingencies (Wildfire Insurance Recovery) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Jun. 30, 2021
2017/2018 Wildfire/Mudslide Events |  |
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward] |  |
Balance ending | $ 666 |
SCE |  |
Loss Contingencies [Line Items] |  |
Wildfire insurance coverage |  | $ 1,000
Self insurance |  | $ 50
SCE | 2017/2018 Wildfire/Mudslide Events |  |
Loss Contingencies [Line Items] |  |
Wildfire insurance coverage | 1,000 |
Self insurance | 10 |
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward] |  |
Balance beginning | 708 |
Insurance recoveries | (42) |
Balance ending | 666 |
SCE | December 2017 - Thomas and Koenigstein Wildfires |  |
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward] |  |
Balance ending | 0 |
SCE | November 2018 - Woolsey Wildfires |  |
Loss Contingencies [Line Items] |  |
Wildfire insurance coverage | 1,000 |
Self insurance | 10 |
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward] |  |
Balance ending | $ 666 |

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- Definition Wildfire Insurance Coverage + References No definition available. + Details
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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=120391452&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=120395209&loc=SL114868664-224227 + Details
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