GENERAL INFORMATION AND OTHER FINANCIAL DATA - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]			$ 28,675
Total other comprehensive income, net of tax amount, attributable to parent		$ (17)	$ 61	29	$ 14
Ending balance		29,479		29,479
Total accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(104)	(182)	(150)	(135)
OCI before reclassifications		(14)	64	36	21
Amounts reclassified from AOCI		(3)	(3)	(7)	(7)
Total other comprehensive income, net of tax amount, attributable to parent		(17)	61	29	14
Ending balance		(121)	(121)	(121)	(121)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(33)	(49)	(36)	(59)
OCI before reclassifications		(16)	11	(13)	21
Amounts reclassified from AOCI		0	0	0	0
Total other comprehensive income, net of tax amount, attributable to parent		(16)	11	(13)	21
Ending balance		(49)	(38)	(49)	(38)
Financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		42	(35)	3	10
OCI before reclassifications		3	53	48	13
Amounts reclassified from AOCI		(10)	(4)	(16)	(9)
Total other comprehensive income, net of tax amount, attributable to parent		(7)	49	32	4
Ending balance		35	14	35	14
Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(113)	(98)	(117)	(86)
OCI before reclassifications		(1)	0	1	(13)
Amounts reclassified from AOCI		7	1	9	2
Total other comprehensive income, net of tax amount, attributable to parent		6	1	10	(11)
Ending balance		(107)	(97)	(107)	(97)
SDG&E
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]			9,902
Ending balance		10,311		10,311
SDG&E | Total accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(8)	(7)	(8)	(7)
Ending balance		(8)	(7)	(8)	(7)
SDG&E | Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(8)	(7)	(8)	(7)
Ending balance		(8)	(7)	(8)	(7)
SoCalGas
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]			7,410
Total other comprehensive income, net of tax amount, attributable to parent		1	1	2	2
Ending balance		7,901		7,901
SoCalGas | Total accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(22)	(23)	(23)	(24)
Amounts reclassified from AOCI		1	1	2	2
Total other comprehensive income, net of tax amount, attributable to parent		1	1	2	2
Ending balance		(21)	(22)	(21)	(22)
SoCalGas | Financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(11)	(12)	(11)	(12)
Amounts reclassified from AOCI		1	1	1	1
Total other comprehensive income, net of tax amount, attributable to parent		1	1	1	1
Ending balance		(10)	(11)	(10)	(11)
SoCalGas | Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(11)	(11)	(12)	(12)
Amounts reclassified from AOCI		0	0	1	1
Total other comprehensive income, net of tax amount, attributable to parent		0	0	1	1
Ending balance		$ (11)	$ (11)	$ (11)	$ (11)

[1] Derived from audited financial statements.