INCOME TAXES - RECONCILIATION TO EFFECTIVE TAX RATE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
U.S. federal statutory income tax rate	$ 376	$ 570	$ 684
State income taxes, net of federal income tax benefit	204	23	6
Rate differential	40	32	50
Foreign exchange and inflation	246	(368)	290
Outside basis difference	142	12	0
Investment tax credits	(100)	(17)	(144)
Other	(2)	0	(3)
Change in valuation allowances	(266)	347	0
Nontaxable or nondeductible items	(23)	(25)	(14)
Changes in unrecognized tax benefits	3	2	(35)
Regulatory tax effects	(304)	(246)	(203)
Noncontrolling interests	(43)	(79)	(91)
SI Partners held for sale outside basis differences	463	0	0
Total income tax expense	$ 701	$ 219	$ 490
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal income tax benefit	11.00%	1.00%	0.00%
Rate differential	2.00%	1.00%	2.00%
Foreign exchange and inflation	14.00%	(14.00%)	9.00%
Outside basis difference	8.00%	1.00%	0.00%
Investment tax credits	(6.00%)	(1.00%)	(4.00%)
Other	0.00%	0.00%	0.00%
Change in valuation allowances	(15.00%)	13.00%	0.00%
Nontaxable or nondeductible items	(1.00%)	(1.00%)	(1.00%)
Changes in unrecognized tax benefits	0.00%	0.00%	(1.00%)
Regulatory tax effects(2)	(17.00%)	(9.00%)	(6.00%)
Noncontrolling interests	(2.00%)	(3.00%)	(3.00%)
SI Partners held for sale outside basis differences	26.00%	0.00%	0.00%
Effective income tax rate	39.00%	8.00%	15.00%
Mexico
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Other	$ (20)	$ 0	$ (33)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Other adjustments	(1.00%)	0.00%	(1.00%)
UNITED STATES
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Other	$ (15)	$ (32)	$ (17)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Other adjustments	(1.00%)	(1.00%)	(1.00%)
SDG&E
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
U.S. federal statutory income tax rate	$ 91	$ 219	$ 191
State income taxes, net of federal income tax benefit	(12)	36	19
Other	1	1	(2)
Investment tax credits	(100)	(17)	(144)
Other	0	(1)	0
Nontaxable or nondeductible items	(2)	(1)	(1)
Changes in unrecognized tax benefits	(1)	0	0
Regulatory tax effects	(105)	(84)	(89)
Total income tax expense	$ (128)	$ 153	$ (26)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal income tax benefit	(3.00%)	3.00%	2.00%
Other adjustments	0.00%	0.00%	0.00%
Investment tax credits	(23.00%)	(1.00%)	(16.00%)
Other	0.00%	0.00%	0.00%
Nontaxable or nondeductible items	0.00%	0.00%	0.00%
Changes in unrecognized tax benefits	0.00%	0.00%	0.00%
Regulatory tax effects(2)	(24.00%)	(8.00%)	(10.00%)
Effective income tax rate	(29.00%)	15.00%	(3.00%)
SoCalGas
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
U.S. federal statutory income tax rate	$ 174	$ 208	$ 169
State income taxes, net of federal income tax benefit	(11)	(14)	(23)
Other	0	0	7
Tax credits	(3)	(3)	(2)
Nontaxable or nondeductible items	2	2	2
Changes in unrecognized tax benefits	(1)	0	(44)
Regulatory tax effects	(199)	(162)	(114)
Total income tax expense	$ (38)	$ 31	$ (5)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal income tax benefit	(2.00%)	(1.00%)	(3.00%)
Other adjustments	0.00%	0.00%	1.00%
Tax credits	0.00%	0.00%	0.00%
Nontaxable or nondeductible items	0.00%	0.00%	0.00%
Changes in unrecognized tax benefits	0.00%	0.00%	(6.00%)
Regulatory tax effects(2)	(24.00%)	(17.00%)	(14.00%)
Effective income tax rate	(5.00%)	3.00%	(1.00%)