GENERAL INFORMATION AND OTHER FINANCIAL DATA - OTHER INCOME (EXPENSE), NET (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Other Income [Line Items]
Allowance for equity funds used during construction	$ 41	$ 37
Investment gains (losses), net	2	16
Foreign currency transaction gains, net	4	1
Non-service components of net periodic benefit cost	23	28
Interest on regulatory balancing accounts, net	21	18
Sundry, net	0	(1)
Total	91	99
SDG&E
Other Income [Line Items]
Allowance for equity funds used during construction	19	20
Non-service components of net periodic benefit cost	9	10
Interest on regulatory balancing accounts, net	11	7
Sundry, net	1	(4)
Total	40	33
SoCalGas
Other Income [Line Items]
Allowance for equity funds used during construction	18	17
Non-service components of net periodic benefit cost	17	21
Interest on regulatory balancing accounts, net	10	11
Sundry, net	(3)	(2)
Total	$ 42	$ 47