GENERAL INFORMATION AND OTHER FINANCIAL DATA - OTHER INCOME (EXPENSE), NET (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other Income [Line Items]
Allowance for equity funds used during construction	$ 39	$ 35	$ 114	$ 105
Investment gains (losses), net	29	(19)	48	(2)
Gains on interest rate and foreign exchange instruments, net	1	1	2	5
Foreign currency transaction (losses) gains, net	(5)	(3)	(6)	1
Non-service components of net periodic benefit cost	(21)	(28)	(25)	(79)
Interest on regulatory balancing accounts, net	26	19	68	56
Sundry, net	(4)	(2)	(7)	(11)
Total	65	3	194	75
SDG&E
Other Income [Line Items]
Allowance for equity funds used during construction	21	21	60	67
Non-service components of net periodic benefit cost	(3)	(5)	4	(14)
Interest on regulatory balancing accounts, net	12	10	30	31
Sundry, net	0	(1)	(8)	(9)
Total	30	25	86	75
SoCalGas
Other Income [Line Items]
Allowance for equity funds used during construction	18	14	54	38
Non-service components of net periodic benefit cost	(16)	(22)	(12)	(60)
Interest on regulatory balancing accounts, net	14	9	38	25
Sundry, net	(3)	(3)	(7)	(12)
Total	$ 13	$ (2)	$ 73	$ (9)