Commitments and Contingencies (Recovery of Wildfire-Related Costs) (Details) - USD ($) $ in Millions		1 Months Ended		9 Months Ended
	Jul. 12, 2019	Sep. 30, 2019	Apr. 30, 2019	Sep. 30, 2019
Loss Contingencies [Line Items]
Anticipated raise from issuance of equity				$ 1,200
Southern California Edison
Loss Contingencies [Line Items]
Initial contribution		$ 2,400
Annual contribution	$ 95
Anticipated issuance of long-term debt				$ 1,200
Maximum aggregate requirement to reimburse the insurance fund percent	20.00%
Initial Liability Cap	$ 2,500
Excluded wildfire risk mitigation capital expenditures	1,600
Southern California Edison | FERC
Loss Contingencies [Line Items]
Additional ROE		0.85%	6.00%
SCE, SDG&E and PG&E
Loss Contingencies [Line Items]
Annual contribution	3,000
Contributions expected to be collected from ratepayers	13,500
SCE and SDG&E
Loss Contingencies [Line Items]
Initial contribution	2,700
Annual contribution	1,000
PG&E
Loss Contingencies [Line Items]
Insurance Fund, Expected Initial Contribution	$ 4,800