EMPLOYEE BENEFIT PLANS - WEIGHTED-AVERAGE ASSUMPTIONS USED TO DETERMINE NET PERIODIC BENEFIT COST (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.31%	5.63%	3.04%
Expected return on plan assets	6.56%	6.48%	6.27%
Interest crediting rate	4.66%	3.99%	1.94%
Pension Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.30%	5.60%	2.99%
Expected return on plan assets	6.25%	6.00%	5.50%
Interest crediting rate	4.66%	3.99%	1.94%
Pension Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.25%	5.60%	3.04%
Expected return on plan assets	6.75%	6.75%	6.75%
Interest crediting rate	4.66%	3.99%	1.94%
Pension Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	2.70%	2.70%	2.70%
Pension Plan | Minimum | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	3.50%	3.50%	3.50%
Pension Plan | Minimum | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	2.70%	2.70%	2.70%
Pension Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	10.00%	10.00%	10.00%
Pension Plan | Maximum | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	10.00%	10.00%	10.00%
Pension Plan | Maximum | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	10.00%	10.00%	10.00%
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.34%	5.65%	3.04%
Expected return on plan assets	5.90%	5.51%	4.77%
Interest crediting rate	4.66%	3.99%	1.94%
Other Postretirement Benefits Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.30%	5.65%	3.05%
Expected return on plan assets	5.88%	5.52%	4.80%
Interest crediting rate	4.66%	3.99%	1.94%
Other Postretirement Benefits Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.35%	5.65%	3.05%
Expected return on plan assets	5.86%	5.47%	4.71%
Interest crediting rate	4.66%	3.99%	1.94%
Other Postretirement Benefits Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	2.70%	2.70%	2.70%
Other Postretirement Benefits Plan | Minimum | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	3.50%	3.50%	3.50%
Other Postretirement Benefits Plan | Minimum | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	2.70%	2.70%	2.70%
Other Postretirement Benefits Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	10.00%	10.00%	10.00%
Other Postretirement Benefits Plan | Maximum | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	10.00%	10.00%	10.00%
Other Postretirement Benefits Plan | Maximum | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase	10.00%	10.00%	10.00%