SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	$ 27,115
Total other comprehensive income, net of tax amount, attributable to parent	31	$ 174	$ 160
AOCI, ending balance	28,675	27,115
AOCI associated with noncontrolling interests	(28)	54	11
SDG&E
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	9,067
Total other comprehensive income, net of tax amount, attributable to parent	(1)	3
AOCI, ending balance	9,902	9,067
SoCalGas
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	6,698
Total other comprehensive income, net of tax amount, attributable to parent	1	7
AOCI, ending balance	7,410	6,698
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(59)	(79)	(64)
OCI before reclassifications	23	10	(34)
Amounts reclassified from AOCI	0	10	19
Total other comprehensive income, net of tax amount, attributable to parent	23	20	(15)
AOCI, ending balance	(36)	(59)	(79)
AOCI associated with noncontrolling interests		9
Foreign currency translation adjustments | KKR
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from AOCI			19
Foreign currency translation adjustments | IEnova
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI associated with noncontrolling interests			(28)
Financial instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	10	(156)	(331)
OCI before reclassifications	59	147	62
Amounts reclassified from AOCI	(66)	19	113
Total other comprehensive income, net of tax amount, attributable to parent	(7)	166	175
AOCI, ending balance	3	10	(156)
AOCI associated with noncontrolling interests	(46)
Financial instruments | KKR
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from AOCI			47
Financial instruments | IEnova
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI associated with noncontrolling interests			(16)
Financial instruments | SoCalGas
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(12)	(13)	(13)
OCI before reclassifications	0	0	0
Amounts reclassified from AOCI	1	1	0
Total other comprehensive income, net of tax amount, attributable to parent	1	1	0
AOCI, ending balance	(11)	(12)	(13)
Pension and PBOP
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(86)	(83)	(105)
OCI before reclassifications	(35)	(11)	8
Amounts reclassified from AOCI	4	8	14
Total other comprehensive income, net of tax amount, attributable to parent	(31)	(3)	22
AOCI, ending balance	(117)	(86)	(83)
Pension and PBOP | SDG&E
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(7)	(10)	(10)
OCI before reclassifications	(2)	2	(1)
Amounts reclassified from AOCI	1	1	1
Total other comprehensive income, net of tax amount, attributable to parent	(1)	3	0
AOCI, ending balance	(8)	(7)	(10)
Pension and PBOP | SoCalGas
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(12)	(18)	(18)
OCI before reclassifications	(1)	4	(2)
Amounts reclassified from AOCI	1	2	2
Total other comprehensive income, net of tax amount, attributable to parent	0	6	0
AOCI, ending balance	(12)	(12)	(18)
Accumulated other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(135)	(318)	(500)
OCI before reclassifications	47	146	36
Amounts reclassified from AOCI	(62)	37	146
Total other comprehensive income, net of tax amount, attributable to parent	(15)	183	182
AOCI, ending balance	(150)	(135)	(318)
Accumulated other comprehensive income (loss) | SDG&E
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(7)	(10)	(10)
OCI before reclassifications	(2)	2	(1)
Amounts reclassified from AOCI	1	1	1
Total other comprehensive income, net of tax amount, attributable to parent	(1)	3	0
AOCI, ending balance	(8)	(7)	(10)
Accumulated other comprehensive income (loss) | SoCalGas
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, beginning balance	(24)	(31)	(31)
OCI before reclassifications	(1)	4	(2)
Amounts reclassified from AOCI	2	3	2
Total other comprehensive income, net of tax amount, attributable to parent	1	7	0
AOCI, ending balance	$ (23)	$ (24)	$ (31)