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Related-Party Transactions | 9 Months Ended
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Sep. 30, 2021
Related Party Transactions [Abstract] |
Related-Party Transactions | Note 18. Related-Party Transactions In the second quarter of 2021, SCE entered into wildfire liability insurance contracts with premiums of approximately $160 million payable to Edison Insurance Services, Inc. ("EIS"), a wholly-owned subsidiary of Edison International. In the second quarter of 2020, SCE entered into wildfire liability insurance contracts with premiums payable to EIS of $176 million. The related-party transactions included in SCE's consolidated balance sheets for wildfire-related insurance purchased from EIS and related expected insurance recoveries were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 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.
The expense for wildfire-related insurance premiums paid to EIS was $41 million and $45 million for the three months ended September 30, 2021 and 2020, and $128 million and $145 million for the nine months ended September 30, 2021 and 2020, respectively. ​

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864 + Details
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