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Related-Party Transactions (Tables)
9 Months Ended
Sep. 30, 2020
Related Party Transactions [Abstract]  
Schedule of Related-Party Transactions 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:

(in millions)
September 30,
2020
December 31, 2019
Current insurance receivable due from affiliate$448 $— 
Long-term insurance receivable due from affiliate354 803 
Prepaid insurance1
85 10 
1    Reflected in "Prepaid expenses" on SCE's consolidated balance sheets.