GENERAL INFORMATION AND OTHER FINANCIAL DATA - OTHER INCOME (EXPENSE), NET (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Other Income [Line Items]
Allowance for equity funds used during construction	$ 38	$ 37	$ 75	$ 70
Investment gains, net	3	5	19	17
Gains (losses) on interest rate and foreign exchange instruments, net	1	(1)	1	4
Foreign currency transaction (losses) gains, net	(2)	3	(1)	4
Non-service components of net periodic benefit cost	32	26	4	51
Interest on regulatory balancing accounts, net	24	19	42	37
Sundry, net	(2)	(6)	(3)	(9)
Total	30	31	129	72
SDG&E
Other Income [Line Items]
Allowance for equity funds used during construction	19	23	39	46
Non-service components of net periodic benefit cost	3	5	(7)	9
Interest on regulatory balancing accounts, net	11	11	18	21
Sundry, net	(4)	(7)	(8)	(8)
Total	23	22	56	50
SoCalGas
Other Income [Line Items]
Allowance for equity funds used during construction	19	14	36	24
Non-service components of net periodic benefit cost	17	19	(4)	38
Interest on regulatory balancing accounts, net	13	8	24	16
Sundry, net	(2)	(2)	(4)	(9)
Total	$ 13	$ 1	$ 60	$ (7)