REVENUES - CONTRACT LIABILITIES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	$ (198)	$ (252)
Revenue from performance obligations satisfied during reporting period	2	2
Payments received in advance	(3)	0
Contract liabilities, closing balance	(199)	(250)
Other current liabilities
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(5)
Deferred Credits and Other
Contract with Customer, Liability [Roll Forward]
Contract liabilities, closing balance	(194)
SDG&E
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	(75)	(79)
Revenue from performance obligations satisfied during reporting period	1	1
Contract liabilities, closing balance	(74)	$ (78)
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	$ (70)