COMMITMENTS AND CONTINGENCIES - ALISO CANYON NATURAL GAS STORAGE FACILITY GAS LEAK (Details) $ in Millions	1 Months Ended	5 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) plaintiff lawsuit	Feb. 21, 2023 plaintiff complaint	Dec. 31, 2022 USD ($) lawsuit	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jan. 31, 2021 lawsuit
Loss Contingencies [Line Items]
Loss contingency accrual			$ 281
Reserve for Aliso Canyon costs			129	$ 1,980
Aliso canyon litigation and regulatory matters			259	1,593	$ 307
SoCalGas
Loss Contingencies [Line Items]
Loss contingency accrual			205
Recoverable costs through insurance settlement			1,279
Reserve for Aliso Canyon costs			129	1,980
Aliso canyon litigation and regulatory matters			259	1,593	307
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas
Loss Contingencies [Line Items]
Number of pending claims | lawsuit	390
Number of plaintiffs | plaintiff	36,000
Estimate of possible loss			3,486
Net book value Of Aliso Canyon Natural Gas Storage Facility			958
Reserve for Aliso Canyon costs			129
Aliso canyon litigation and regulatory matters			259	1,590	307
Aliso canyon litigation and regulatory matters, net of tax			199	$ 1,150	$ 233
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | Deferred Credits and Other
Loss Contingencies [Line Items]
Reserve for Aliso Canyon costs			4
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | Individual Plaintiff Litigation
Loss Contingencies [Line Items]
Estimate of possible loss	$ 1,800
Damages paid			$ 1,790
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | Individual Plaintiff Litigation | Subsequent Event
Loss Contingencies [Line Items]
Percentage of plaintiffs agreeing to participate		99.00%
Number of plaintiffs not contacted | plaintiff		265
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | Property Class Action
Loss Contingencies [Line Items]
Estimate of possible loss	$ 40
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | The Developer Plaintiffs | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff		235,000,000
New complaints on behalf of plaintiffs | complaint		14,000,000
Shareholder Derivative Complaint | SoCalGas
Loss Contingencies [Line Items]
Number of pending claims | lawsuit			4			3