REVENUES - CONTRACT LIABILITIES (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	$ (198)	$ (252)
Revenue from performance obligations satisfied during reporting period	3	5
Payments received in advance	(3)	(2)
Contract liabilities, closing balance	(198)	(249)
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	(193)
SDG&E
Contract with Customer, Liability [Roll Forward]
Contract liabilities, opening balance	(75)	(79)
Revenue from performance obligations satisfied during reporting period	2	2
Contract liabilities, closing balance	(73)	$ (77)
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	$ (70)