GENERAL INFORMATION AND OTHER FINANCIAL DATA - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]	$ 28,675
OCI before reclassifications		50	$ (43)
Amounts reclassified from AOCI		(4)	(4)
Total other comprehensive income, net of tax amount, attributable to parent		46	(47)
Ending balance		29,135
Total accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(150)	(135)
Ending balance		(104)	(182)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(36)	(59)
OCI before reclassifications		3	10
Amounts reclassified from AOCI		0	0
Total other comprehensive income, net of tax amount, attributable to parent		3	10
Ending balance		(33)	(49)
Financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		3	10
OCI before reclassifications		45	(40)
Amounts reclassified from AOCI		(6)	(5)
Total other comprehensive income, net of tax amount, attributable to parent		39	(45)
Ending balance		42	(35)
Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(117)	(86)
OCI before reclassifications		2	(13)
Amounts reclassified from AOCI		2	1
Total other comprehensive income, net of tax amount, attributable to parent		4	(12)
Ending balance		(113)	(98)
SDG&E
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]	9,902
Ending balance		10,125
SDG&E | Total accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(8)	(7)
Ending balance		(8)	(7)
SDG&E | Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(8)	(7)
Ending balance		(8)	(7)
SoCalGas
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]	7,410
Amounts reclassified from AOCI		1	1
Total other comprehensive income, net of tax amount, attributable to parent		1	1
Ending balance		7,770
SoCalGas | Total accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(23)	(24)
Ending balance		(22)	(23)
SoCalGas | Financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(11)	(12)
Amounts reclassified from AOCI		0	0
Total other comprehensive income, net of tax amount, attributable to parent		0	0
Ending balance		(11)	(12)
SoCalGas | Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(12)	(12)
Amounts reclassified from AOCI		1	1
Total other comprehensive income, net of tax amount, attributable to parent		1	1
Ending balance		$ (11)	$ (11)

[1] Derived from audited financial statements.