WILDFIRE-RELATED CONTINGENCIES (2019 Kincade Fire, 2020 Zogg Fire and 2021 Dixie Fire) (Details) $ in Thousands, numberOfPeople in Millions					3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 18, 2022 USD ($)	Jan. 05, 2022 USD ($)	Oct. 29, 2021 USD ($) a	Nov. 04, 2019 numberOfPeople	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jul. 21, 2022 plaintiff numberOfClaimHolder complaint numberOfPlaintiff	Apr. 28, 2022 USD ($)	Apr. 11, 2022 USD ($) position	Apr. 08, 2022 USD ($) position	Jan. 28, 2022 notice	Jan. 27, 2022 notice	Dec. 02, 2021 transmissionLine	Nov. 18, 2021 notice	Sep. 24, 2021 felony misdemeanor	Aug. 31, 2021 USD ($)	Jul. 13, 2021 a structure injury	May 11, 2021 count	Apr. 06, 2021 felony misdemeanor	Sep. 27, 2020 a structure injury fatality	Oct. 23, 2019 a numberOfFatality structure injury
2019 Kincade fire
Loss Contingencies [Line Items]
Number of acres burned (acre) | a																						77,758
Number of fatalities (fatality) | numberOfFatality																						0
Number of injuries | injury																						4
Number of structures destroyed (structure) | structure																						374
Number of structures damaged (structure) | structure																						60
Number of people part of mandatory evacuation order | numberOfPeople				0.2
Number of felonies (felony) | notice												5	2
Number of misdemeanors dropped (misdemeanor) | notice												6
Stipulation costs payable											$ 20,250
Number of new positions headquartered (position) | position											80
Number of transmission lines | transmissionLine														70
Loss contingency liability					$ 910,000	$ 910,000	$ 769,000
Fire fighting costs recovery requested		$ 90,000
Potential loss contingency					950,000		800,000
Insurance receivable					430,000	430,000
2019 Kincade fire | Subsequent Event
Loss Contingencies [Line Items]
Number of complaints (complaint) | complaint								104
Number of plaintiffs represented by complaints | plaintiff								2,657
2019 Kincade fire | Pacific Gas & Electric Co (Utility)
Loss Contingencies [Line Items]
Number of demurrer filed (count) | count																			25
Number of criminal complaints (count) | count																			33
Loss contingency liability					40,000	40,000
Loss contingency, costs incurred						85,000
2019 Kincade fire | Pacific Gas & Electric Co (Utility) | Sonoma Contry District Attorney
Loss Contingencies [Line Items]
Number of felonies (felony) | felony																				5
Number of misdemeanors (misdemeanor) | misdemeanor																				28
2020 Zogg fire
Loss Contingencies [Line Items]
Number of acres burned (acre) | a																					56,338
Number of fatalities (fatality) | fatality																					4
Number of injuries | injury																					1
Number of structures destroyed (structure) | structure																					204
Number of structures damaged (structure) | structure																					27
Number of demurrer filed (count) | notice															10
Number of criminal complaints (count) | notice															31
Loss contingency liability					131,000	131,000	211,000
Fire suppression and other costs	$ 34,500
Potential loss contingency							375,000
Liability insurance coverage					611,000	611,000
Insurance receivable					346,000	346,000
Initial self-insured retention per occurrence					60,000	60,000
Legal fees						31,000
2020 Zogg fire | Subsequent Event
Loss Contingencies [Line Items]
Number of complaints (complaint) | complaint								24
Number of plaintiffs represented by complaints | numberOfPlaintiff								460
Zogg Complaint, 2020
Loss Contingencies [Line Items]
Number of felonies (felony) | felony																11
Number of misdemeanors (misdemeanor) | misdemeanor																20
2021 Dixie fire
Loss Contingencies [Line Items]
Number of acres burned (acre) | a																		963,309
Number of structures destroyed (structure) | structure																		1,311
Number of structures damaged (structure) | structure																		94
Stipulation costs payable										$ 34,750
Number of new positions headquartered (position) | position										80
Loss contingency liability					1,146,000	1,146,000	1,150,000
Loss contingency, costs incurred			$ 650,000
Potential loss contingency							$ 1,150,000
Insurance receivable					555,000	555,000
Number of residential structures destroyed (structure) | structure																		763
Number of multi-family residential structures destroyed (structure) | structure																		12
Number of commercial residential structures destroyed (structure) | structure																		8
Number of commercial non-residential structures destroyed (structure) | structure																		148
Number of detached structures destroyed (structure) | structure																		466
Number of first responder injuries (injury) | injury																		4
Probable of recovery						1,170,000
2021 Dixie fire | Subsequent Event
Loss Contingencies [Line Items]
Number of complaints (complaint) | numberOfClaimHolder								42
Number of plaintiffs represented by complaints | numberOfClaimHolder								1,273
2021 Dixie fire | FERC TO rates
Loss Contingencies [Line Items]
Probable of recovery						104,000
2021 Dixie fire | WEMA
Loss Contingencies [Line Items]
Probable of recovery						361,000
2021 Dixie fire | National Park
Loss Contingencies [Line Items]
Number of acres burned (acre) | a			70,000
2021 Dixie fire | National Forrest
Loss Contingencies [Line Items]
Number of acres burned (acre) | a			685,000
Zogg Fire, 2020 and Dixie Fire, 2021
Loss Contingencies [Line Items]
Liability insurance coverage					900,000	900,000
Insurance Coverage for Wildfire Events
Loss Contingencies [Line Items]
Liability insurance coverage									$ 340,000								$ 600,000
Initial self-insured retention per occurrence					$ 60,000	$ 60,000