REVENUES - CONTRACT LIABILITIES (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	$ (198)	$ (252)
Revenue from performance obligations satisfied during reporting period	5	9
Payments received in advance	(3)	(21)
Contract liabilities, closing balance	(196)	(264)
Other current liabilities
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(4)
Deferred Credits and Other
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(192)
SDG&E
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	(75)	(79)
Revenue from performance obligations satisfied during reporting period	3	3
Contract liabilities, closing balance	(72)	$ (76)
SDG&E | Other current liabilities
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(3)
SDG&E | Deferred Credits and Other
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	$ (69)