EMPLOYEE BENEFIT PLANS - PENSION AND PBOP OBLIGATIONS, NET OF PLAN ASSETS (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities	$ (168)	$ (407)
SDG&E
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities	(28)	(79)
SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities	(45)	(231)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	6	0
Current liabilities	(50)	(44)
Noncurrent liabilities	(160)	(399)
Net recorded (liability) asset at December 31	(204)	(443)
Pension Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(7)	(2)
Noncurrent liabilities	(28)	(79)
Net recorded (liability) asset at December 31	(35)	(81)
Pension Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(17)	(2)
Noncurrent liabilities	(45)	(231)
Net recorded (liability) asset at December 31	(62)	(233)
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	507	485
Current liabilities	(1)	(1)
Noncurrent liabilities	(8)	(8)
Net recorded (liability) asset at December 31	498	476
Other Postretirement Benefits Plan | SDG&E
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	11	10
Current liabilities	0	0
Noncurrent liabilities	0	0
Net recorded (liability) asset at December 31	11	10
Other Postretirement Benefits Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	486	469
Current liabilities	0	0
Noncurrent liabilities	0	0
Net recorded (liability) asset at December 31	$ 486	$ 469