EMPLOYEE BENEFIT PLANS - PENSION AND PBOP OBLIGATIONS, NET OF PLAN ASSETS (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities	$ (410)	$ (687)
San Diego Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities	(42)	(25)
SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities	(277)	(551)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	8	19
Current liabilities	(23)	(19)
Noncurrent liabilities	(401)	(675)
Net recorded (liability) asset at December 31	(416)	(675)
Pension Plan | San Diego Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(2)	(1)
Noncurrent liabilities	(42)	(25)
Net recorded (liability) asset at December 31	(44)	(26)
Pension Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(2)	(1)
Noncurrent liabilities	(277)	(551)
Net recorded (liability) asset at December 31	(279)	(552)
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	443	481
Current liabilities	(1)	(1)
Noncurrent liabilities	(9)	(12)
Net recorded (liability) asset at December 31	433	468
Other Postretirement Benefits Plan | San Diego Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	13	9
Current liabilities	0	0
Noncurrent liabilities	0	0
Net recorded (liability) asset at December 31	13	9
Other Postretirement Benefits Plan | SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	426	472
Current liabilities	0	0
Noncurrent liabilities	0	0
Net recorded (liability) asset at December 31	$ 426	$ 472