SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	$ 3,925	$ 3,831	$ 3,712
Accretion expense	164	156	148
Liabilities incurred	10	0	18
Payments	(58)	(65)	(62)
Revisions	1	3	15
Reclassification to liabilities held for sale	(94)	0	0
Ending Balance	3,948	3,925	3,831
SDG&E
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	900	894	887
Accretion expense	40	37	37
Liabilities incurred	10	0	15
Payments	(47)	(57)	(59)
Revisions	(50)	26	14
Reclassification to liabilities held for sale	0	0	0
Ending Balance	853	900	894
SoCalGas
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	2,930	2,847	2,743
Accretion expense	119	114	106
Liabilities incurred	0	0	0
Payments	(11)	(8)	(3)
Revisions	54	(23)	1
Reclassification to liabilities held for sale	0	0	0
Ending Balance	$ 3,092	$ 2,930	$ 2,847