COMMITMENTS AND CONTINGENCIES - SDG&E AND SoCalGas LITIGATION (Details) $ in Millions		1 Months Ended			4 Months Ended	12 Months Ended
	Feb. 20, 2024 plaintiff	Oct. 31, 2023 plaintiff	Sep. 30, 2021 USD ($) lawsuit plaintiff	Jan. 31, 2021 lawsuit	Feb. 11, 2016 well	Dec. 31, 2023 USD ($) lawsuit	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) lawsuit	Aug. 31, 2023 Bcf	Nov. 30, 2021 Bcf
Loss Contingencies [Line Items]
Natural gas inventory level, maximum | Bcf									68.6	41.16
Aliso Canyon litigation and regulatory matters						$ 0	$ 259	$ 1,593
SoCalGas
Loss Contingencies [Line Items]
Injection and withdrawal wells with gas leak | well					1
Aliso Canyon litigation and regulatory matters						0	259	$ 1,593
SDG&E
Loss Contingencies [Line Items]
Number of pending claims | lawsuit								2
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas
Loss Contingencies [Line Items]
Number of pending claims | lawsuit			390
Number of plaintiffs | plaintiff		233	36,000
Public utilities, property, plant and equipment, other property, plant and equipment						1,000
Aliso Canyon litigation and regulatory matters							259	$ 1,590
Aliso canyon litigation and regulatory matters, net of tax							$ 199	$ 1,150
Reserve for Aliso Canyon costs						31
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | Deferred Credits and Other
Loss Contingencies [Line Items]
Reserve for Aliso Canyon costs						$ 2
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff	100
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | Individual Plaintiff Litigation
Loss Contingencies [Line Items]
Estimate of possible loss			$ 1,800
Percentage of plaintiffs agreeing to participate							99.00%
Damages paid							$ 1,790
Aliso Canyon Natural Gas Storage Facility Gas Leak | SoCalGas | The Developer Plaintiffs | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff	413
Shareholder Derivative Complaint | SoCalGas
Loss Contingencies [Line Items]
Number of pending claims | lawsuit						4
Loss contingency, claims dismissed, number | lawsuit				3