REVENUES - CONTRACT LIABILITIES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	$ (196)	$ (198)
Revenue from performance obligations satisfied during reporting period	28	2
Payments received in advance	(1)	(3)
Contract liabilities, closing balance	(169)	(199)
Other current liabilities
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(79)
Deferred Credits and Other
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(90)
SDG&E
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	(72)	(75)
Revenue from performance obligations satisfied during reporting period	1	1
Contract liabilities, closing balance	(71)	$ (74)
SDG&E | Other current liabilities
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(4)
SDG&E | Deferred Credits and Other
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	$ (67)