INCOME TAXES - UNRECOGNIZED TAX BENEFITS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Reconciliation of Unrecognized Tax Benefits
Beginning balance	$ 548	$ 492	$ 278
Increase in prior period tax positions	19	40	308
Decrease in prior period tax positions	(28)	(8)	(63)
Decrease in current period tax positions	0	0	(21)
Settlements with tax authorities	(19)	(15)	(16)
Increase in current period tax positions	81	39	6
Ending balance	601	548	492
Of the total, amounts related to tax positions that, if recognized, in future years, would decrease the effective tax rate	(500)	(229)	(224)
Of the total, amounts related to tax positions that, if recognized, in future years, would increase the effective tax rate	0	1	1
Disposal Group Held-for-sale | SI Partners
Reconciliation of Unrecognized Tax Benefits
Unrecognized tax benefits held for sale	33
SDG&E
Reconciliation of Unrecognized Tax Benefits
Beginning balance	14	14	14
Increase in prior period tax positions	0	0	2
Settlements with tax authorities	(6)	0	(2)
Ending balance	8	14	14
Of the total, amounts related to tax positions that, if recognized, in future years, would decrease the effective tax rate	(8)	(11)	(11)
Of the total, amounts related to tax positions that, if recognized, in future years, would increase the effective tax rate	0	1	1
SoCalGas
Reconciliation of Unrecognized Tax Benefits
Beginning balance	29	29	77
Increase in prior period tax positions	0	0	1
Decrease in prior period tax positions	0	0	(47)
Settlements with tax authorities	(2)	0	(2)
Ending balance	27	29	29
Of the total, amounts related to tax positions that, if recognized, in future years, would decrease the effective tax rate	$ (27)	$ (29)	$ (29)