GENERAL INFORMATION AND OTHER FINANCIAL DATA - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025		Mar. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		$ 37,788	[1]	$ 33,654
Beginning balance	[1]	31,222
Total other comprehensive [income (loss)]		(34)		161
Total other comprehensive income (loss), net of tax amount, attributable to parent		(29)		46
Ending balance		38,202		34,661
Ending balance		31,643
Total AOCI
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		(166)		(150)
OCI before reclassifications		(33)		50
Amounts reclassified from AOCI		4		(4)
Total other comprehensive [income (loss)]		(29)		46
Ending balance		(195)		(104)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		(66)		(36)
OCI before reclassifications		0		3
Amounts reclassified from AOCI		0		0
Total other comprehensive [income (loss)]		0		3
Ending balance		(66)		(33)
Financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		15		3
OCI before reclassifications		(31)		45
Amounts reclassified from AOCI		(1)		(6)
Total other comprehensive [income (loss)]		(32)		39
Ending balance		(17)		42
Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		(115)		(117)
OCI before reclassifications		(2)		2
Amounts reclassified from AOCI		5		2
Total other comprehensive [income (loss)]		3		4
Ending balance		(112)		(113)
SDG&E
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		10,564	[2]	9,902
Ending balance		10,845		10,125
SDG&E | Total AOCI
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(12)		(8)
Ending balance		(12)		(8)
SDG&E | Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(12)		(8)
Ending balance		(12)		(8)
SoCalGas
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		8,161	[1]	7,410
OCI before reclassifications		(2)
Amounts reclassified from AOCI		4		1
Total other comprehensive [income (loss)]		2		1
Total other comprehensive income (loss), net of tax amount, attributable to parent		2		1
Ending balance		8,606		7,770
SoCalGas | Total AOCI
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(27)		(23)
Total other comprehensive [income (loss)]		2		1
Ending balance		(25)		(22)
SoCalGas | Financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(10)		(11)
OCI before reclassifications		0
Amounts reclassified from AOCI		0		0
Total other comprehensive income (loss), net of tax amount, attributable to parent		0		0
Ending balance		(10)		(11)
SoCalGas | Pension and PBOP
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(17)		(12)
OCI before reclassifications		(2)
Amounts reclassified from AOCI		4		1
Total other comprehensive income (loss), net of tax amount, attributable to parent		2		1
Ending balance		$ (15)		$ (11)

[1] Derived from audited financial statements.

[2] Derived from audited financial statements.