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Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Expected Insurance Recoveries The following table presents changes in expected insurance recoveries associated with the estimated losses for the 2017/2018 Wildfire/Mudslide Events since December 31, 2019:
(in millions)
 
Balance at December 31, 2019
$
1,710

Insurance recoveries1
(58
)
Balance at March 31, 2020
$
1,652

1 Additional insurance recoveries of $15 million were received in April 2020.