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Related-Party Transactions (Tables) | 9 Months Ended
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Sep. 30, 2021
Related Party Transactions [Abstract] |
Schedule of Related-Party Transactions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
(in millions) |  | 2021 |  | 2020
Current insurance receivable due from affiliate | ​ | $ | — | ​ | $ | 268
Prepaid insurance1 | ​ |  | 79 | ​ |  | 56
1 | Reflected in "Prepaid expenses" on SCE's consolidated balance sheets.

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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