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Related-Party Transactions (Tables)
12 Months Ended
Dec. 31, 2021
Related Party Transactions [Abstract]  
Schedule of Related-Party Transactions

December 31, 

(in millions)

    

2021

    

2020

Insurance receivable due from affiliate

$

$

268

Prepaid insurance1

 

52

 

56

1Reflected in "Prepaid expenses" on SCE's consolidated balance sheets.