EMPLOYEE BENEFIT PLANS - WEIGHTED-AVERAGE ASSUMPTIONS USED TO DETERMINE NET PERIODIC BENEFIT COST (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.74%	5.31%	5.63%
Expected return on plan assets	6.40%	6.56%	6.48%
Interest crediting rate	4.54%	4.66%	3.99%
Pension Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.75%	5.30%	5.60%
Expected return on plan assets	6.25%	6.25%	6.00%
Interest crediting rate	4.54%	4.66%	3.99%
Pension Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.70%	5.25%	5.60%
Expected return on plan assets	6.50%	6.75%	6.75%
Interest crediting rate	4.54%	4.66%	3.99%
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	5.75%	5.34%	5.65%
Expected return on plan assets	5.90%	5.90%	5.51%
Interest crediting rate	4.54%	4.66%	3.99%
Other Postretirement Benefits Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.75%	5.30%	5.65%
Expected return on plan assets	5.86%	5.88%	5.52%
Interest crediting rate	4.54%	4.66%	3.99%
Other Postretirement Benefits Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.75%	5.35%	5.65%
Expected return on plan assets	5.87%	5.86%	5.47%
Interest crediting rate	4.54%	4.66%	3.99%
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%