REVENUES - CONTRACT LIABILITIES (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Contract with Customer, Liability [Roll Forward]
Beginning balance		$ (198)	$ (252)	$ (278)
Revenue from performance obligations satisfied during reporting period		11	14	131
Payments received in advance		(7)	(21)	(105)
Contract modification	$ 61	(2)	61	0
Ending balance	(198)	(196)	(198)	(252)
Other Current Liabilities
Contract with Customer, Liability [Roll Forward]
Beginning balance		(5)
Ending balance	(5)	(105)	(5)
Deferred credits and other
Contract with Customer, Liability [Roll Forward]
Beginning balance		(193)
Ending balance	(193)	(91)	(193)
SDG&E
Contract with Customer, Liability [Roll Forward]
Beginning balance		(75)	(79)	(83)
Revenue from performance obligations satisfied during reporting period		3	4	4
Ending balance	(75)	(72)	(75)	$ (79)
SDG&E | Other Current Liabilities
Contract with Customer, Liability [Roll Forward]
Beginning balance		(3)
Ending balance	(3)	(4)	(3)
SDG&E | Deferred credits and other
Contract with Customer, Liability [Roll Forward]
Beginning balance		(72)
Ending balance	$ (72)	$ (68)	$ (72)