SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	$ 3,831	$ 3,712	$ 3,538
Accretion expense	156	148	141
Liabilities incurred	0	18	21
Payments	(65)	(62)	(57)
Revisions	3	15	69
Ending Balance	3,925	3,831	3,712
SDG&E
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	894	887	890
Accretion expense	37	37	37
Liabilities incurred	0	15	6
Payments	(57)	(59)	(54)
Revisions	26	14	8
Ending Balance	900	894	887
SoCalGas
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	2,847	2,743	2,582
Accretion expense	114	106	101
Liabilities incurred	0	0	0
Payments	(8)	(3)	(3)
Revisions	(23)	1	63
Ending Balance	$ 2,930	$ 2,847	$ 2,743