SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 37,788	$ 33,654	$ 29,256
Total other comprehensive income (loss)	(36)	(5)	3
Ending balance	38,793	37,788	33,654
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	31,222
Net OCI	(31)	(16)	31
Ending balance	31,594	31,222
Transfer of plan obligation	6
SDG&E
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Total other comprehensive income (loss)	6	(4)	(1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	10,564	9,902	9,067
OCI before reclassifications	(1)	(3)	(2)
Amounts reclassified from AOCI	7	(1)	1
Net OCI	6	(4)	(1)
Ending balance	10,933	10,564	9,902
SoCalGas
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Total other comprehensive income (loss)	10	(4)	1
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	8,161	7,410	6,698
OCI before reclassifications	(2)	(5)	(1)
Amounts reclassified from AOCI	12	1	2
Net OCI	10	(4)	1
Ending balance	8,836	8,161	7,410
AOCI
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(166)	(150)	(135)
OCI before reclassifications	(57)	3	47
Amounts reclassified from AOCI	26	(19)	(62)
Net OCI			(15)
Total other comprehensive income (loss)	(31)	(16)	31
Ending balance	(197)	(166)	(150)
AOCI | SDG&E
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Total other comprehensive income (loss)	6	(4)	(1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(12)	(8)	(7)
Net OCI	6	(4)	(1)
Ending balance	(6)	(12)	(8)
AOCI | SoCalGas
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Total other comprehensive income (loss)	10	(4)	1
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(27)	(23)	(24)
Net OCI	10	(4)	1
Ending balance	(17)	(27)	(23)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(66)	(36)	(59)
OCI before reclassifications	21	(30)	23
Amounts reclassified from AOCI	0	0	0
Net OCI			23
Total other comprehensive income (loss)	21	(30)
Ending balance	(45)	(66)	(36)
Financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	15	3	10
OCI before reclassifications	(68)	34	59
Amounts reclassified from AOCI	(1)	(22)	(66)
Net OCI			(7)
Total other comprehensive income (loss)	(69)	12
Ending balance	(54)	15	3
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI associated with noncontrolling interests		(46)
Financial instruments | SoCalGas
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(10)	(11)	(12)
OCI before reclassifications	0	0	0
Amounts reclassified from AOCI	1	1	1
Net OCI	1	1	1
Ending balance	(9)	(10)	(11)
Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(115)	(117)	(86)
OCI before reclassifications	(10)	(1)	(35)
Amounts reclassified from AOCI	27	3	4
Net OCI			(31)
Total other comprehensive income (loss)	17	2
Ending balance	(98)	(115)	(117)
Pension and PBOP | SDG&E
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(12)	(8)	(7)
OCI before reclassifications	(1)	(3)	(2)
Amounts reclassified from AOCI	7	(1)	1
Net OCI	6	(4)	(1)
Ending balance	(6)	(12)	(8)
Pension and PBOP | SoCalGas
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(17)	(12)	(12)
OCI before reclassifications	(2)	(5)	(1)
Amounts reclassified from AOCI	11	0	1
Net OCI	9	(5)	0
Ending balance	$ (8)	$ (17)	$ (12)