WILDFIRE-RELATED CONTINGENCIES (2019 Kincade Fire) (Details) - 2019 Kincade Fire $ in Millions		3 Months Ended
	Nov. 04, 2019 numberOfPeople	Mar. 31, 2020 USD ($)	Oct. 23, 2019 a numberOfStructure injury customer structure facility
Loss Contingencies [Line Items]
Number of acres burned (acre) | a			77,758
Number of fatalities (fatality) | facility			0
Number of injuries | injury			4
Number of structures destroyed (structure) | structure			374
Number of residences destroyed (residence)			174
Number of commercial structures destroyed (structure)			11
Number of other buildings destroyed (structures)			189
Number of structures damaged (structure)			60
Number of residential structures damaged (structure)			35
Number of commercial structures damaged (structure)			1
Number of other structures damaged (structure)			24
Number of people part of mandatory evacuation order | numberOfPeople	200,000
Number of customers without power | customer			27,837
Potential loss contingency | $		$ 600