GENERAL INFORMATION AND OTHER FINANCIAL DATA - PENSION AND PBOP NARRATIVE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Defined Benefit Plan Disclosure [Line Items]
Health Reimbursement Account	$ 100
Partial termination, percentage reduction in active participants	20.00%
PBOP
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits	$ 18,000	$ 0
SDG&E | PBOP
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits	6,000	0
SoCalGas | PBOP
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits	$ 12,000	$ 0
62 Years Or Older | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Years of service required for Health Reimbursement Account	5 years
62 Years Or Older | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Years of service required for Health Reimbursement Account	5 years
Age 55 To 61 | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Years of service required for Health Reimbursement Account	10 years
Age 55 To 61 | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Years of service required for Health Reimbursement Account	10 years
Ages 65 Or Older | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Years of service required for Health Reimbursement Account	5 years
Ages 55 To 64 | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Years of service required for Health Reimbursement Account	15 years