WILDFIRE-RELATED CONTINGENCIES (2019 Kincade Fire, 2020 Zogg Fire, 2021 Dixie Fire and 2022 Mosquito Fire) (Details) $ in Thousands, numberOfPeople in Millions						3 Months Ended		9 Months Ended	12 Months Ended
	Oct. 25, 2022 USD ($)	Mar. 18, 2022 USD ($)	Jan. 05, 2022 USD ($)	Oct. 29, 2021 USD ($) a	Nov. 04, 2019 numberOfPeople	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 20, 2022 numberOfClaimHolder complaint notice plaintiff numberOfPlaintiff	Sep. 06, 2022 USD ($) a structure injury numberOfFatality	Apr. 28, 2022 USD ($)	Apr. 11, 2022 USD ($) position	Apr. 08, 2022 USD ($) position	Mar. 31, 2022 USD ($)	Jan. 28, 2022 notice	Jan. 27, 2022 notice	Dec. 02, 2021 transmissionLine	Nov. 18, 2021 notice	Sep. 24, 2021 felony misdemeanor	Aug. 31, 2021 USD ($)	Jul. 13, 2021 a structure injury	May 11, 2021 count	Apr. 06, 2021 misdemeanor felony	Sep. 27, 2020 a structure fatality injury	Oct. 23, 2019 a structure numberOfFatality injury
Loss Contingencies [Line Items]
Accrued insurance recoveries								$ 40,000
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
Stipulation costs paid								1,250
Number of transmission lines | transmissionLine																		70
Loss contingency liability						$ 901,000		901,000	$ 769,000
Payments								18,000
Fire fighting costs recovery requested			$ 90,000
Potential loss contingency						950,000			800,000
Accrued Losses							$ 150,000	150,000
Insurance receivable						430,000		430,000
Accrued insurance recoveries								0
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						74,000		74,000	211,000
Payments								137,000
Potential loss contingency									375,000
Accrued Losses								0
Insurance receivable						347,000		347,000
Fire suppression and other costs		$ 34,500
Liability insurance coverage						611,000		611,000
Initial self-insured retention per occurrence						60,000		60,000
Legal fees								32,000
Accrued insurance recoveries								10,000
Zogg Complaint, 2020
Loss Contingencies [Line Items]
Number of felonies (felony) | felony																				11
Number of misdemeanors (misdemeanor) | misdemeanor																				20
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
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						1,118,000		1,118,000	1,150,000
Loss contingency, costs incurred				$ 650,000
Payments								32,000
Potential loss contingency									$ 1,150,000
Accrued Losses								0
Insurance receivable						553,000		553,000
Liability insurance coverage						900,000		900,000
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								1,176,000
Accrued insurance recoveries								(10,000)
Dixie Stipulation
Loss Contingencies [Line Items]
Payments								29,750
2022 Mosquito fire
Loss Contingencies [Line Items]
Number of acres burned (acre) | a											76,788
Number of fatalities (fatality) | numberOfFatality											0
Number of injuries | injury											0
Number of structures destroyed (structure) | structure											78
Number of structures damaged (structure) | structure											13
Loss contingency liability											$ 100,000
Liability insurance coverage						$ 940,000		940,000
Probable of recovery								100,000
Percentage of fire contained											100.00%
Accrued insurance recoveries								40,000
Subsequent Event | 2019 Kincade fire
Loss Contingencies [Line Items]
Number of complaints (complaint) | complaint										106
Number of plaintiffs represented by complaints | plaintiff										2,670
Subsequent Event | 2020 Zogg fire
Loss Contingencies [Line Items]
Number of complaints (complaint) | complaint										28
Number of plaintiffs represented by complaints | numberOfPlaintiff										496
Penalty recommended	$ 155,000
Subsequent Event | 2021 Dixie fire
Loss Contingencies [Line Items]
Number of complaints (complaint) | numberOfClaimHolder										54
Number of plaintiffs represented by complaints | numberOfClaimHolder										1,444
Subsequent Event | 2022 Mosquito fire
Loss Contingencies [Line Items]
Number of complaints (complaint) | complaint										3
Number of plaintiffs represented by complaints | notice										34
FERC TO rates | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery								106,000
FERC TO rates | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery								10,000
WEMA | 2021 Dixie fire
Loss Contingencies [Line Items]
Probable of recovery								367,000
WEMA | 2022 Mosquito fire
Loss Contingencies [Line Items]
Probable of recovery								50,000
National Park | 2021 Dixie fire
Loss Contingencies [Line Items]
Number of acres burned (acre) | a				70,000
National Forrest | 2021 Dixie fire
Loss Contingencies [Line Items]
Number of acres burned (acre) | a				685,000
Pacific Gas & Electric Co (Utility) | 2019 Kincade fire
Loss Contingencies [Line Items]
Number of demurrer filed (count) | count																							25
Number of criminal complaints (count) | count																							33
Loss contingency liability															$ 40,000
Loss contingency, costs incurred								85,000
Pacific Gas & Electric Co (Utility) | Sonoma Contry District Attorney | 2019 Kincade fire
Loss Contingencies [Line Items]
Number of felonies (felony) | felony																								5
Number of misdemeanors (misdemeanor) | misdemeanor																								28
Pacific Gas & Electric Co (Utility) | California General Fund | 2019 Kincade fire
Loss Contingencies [Line Items]
Payments								$ 20,000