SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - RECLASSIFICATION FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Operation and maintenance	$ 5,336	$ 5,458	$ 4,746
Interest expense	(1,049)	(1,309)	(1,054)
Equity earnings	1,609	1,481	1,498
Energy-related businesses	1,748	2,891	1,788
Other income (expense), net	136	131	24
Income before income taxes and equity earnings	2,110	2,627	1,343
Income tax (expense) benefit	(219)	(490)	(556)
Earnings attributable to noncontrolling interests	(638)	(543)	(146)
Total, net of income tax and after NCI	2,862	3,075	2,139
Net income	3,500	3,618	2,285
SDG&E
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(525)	(497)	(449)
Other income (expense), net	90	97	92
Income before income taxes and equity earnings	1,044	910	1,097
Income tax (expense) benefit	(153)	26	(182)
Total, net of income tax and after NCI	891	936	915
Net income	891	936	915
SoCalGas
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(323)	(285)	(198)
Other income (expense), net	25	(4)	(8)
Income before income taxes and equity earnings	987	807	738
Income tax (expense) benefit	(31)	5	(138)
Total, net of income tax and after NCI	956	812	600
Net income	956	812	600
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total, net of income tax and after NCI	(19)	(16)	28
Reclassification out of Accumulated Other Comprehensive Income | SDG&E
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total, net of income tax and after NCI	(1)	1	1
Reclassification out of Accumulated Other Comprehensive Income | SoCalGas
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total, net of income tax and after NCI	1	2	3
Reclassification out of Accumulated Other Comprehensive Income | Foreign currency translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Operation and maintenance	0	0	1
Reclassification out of Accumulated Other Comprehensive Income | Pension and other postretirement benefits
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes and equity earnings	18	5	11
Income tax (expense) benefit	(15)	(1)	(3)
Income (loss) from continuing operations, net of tax	3	4	8
Reclassification out of Accumulated Other Comprehensive Income | Pension and other postretirement benefits | SDG&E
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes and equity earnings	1	1	1
Income tax (expense) benefit	(2)	0	0
Reclassification out of Accumulated Other Comprehensive Income | Pension and other postretirement benefits | SoCalGas
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes and equity earnings	2	2	3
Income tax (expense) benefit	(2)	(1)	(1)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	6	3	7
Reclassification out of Accumulated Other Comprehensive Income | Amortization of actuarial loss | SDG&E
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	1	0	1
Reclassification out of Accumulated Other Comprehensive Income | Amortization of actuarial loss | SoCalGas
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	1	1	2
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	3	2	4
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service cost | SDG&E
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	0	1	0
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service cost | SoCalGas
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	1	1	1
Reclassification out of Accumulated Other Comprehensive Income | Settlement charges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	9	0	0
Reclassification out of Accumulated Other Comprehensive Income | Financial instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total, net of income tax and after NCI	(22)	(20)	19
Reclassification out of Accumulated Other Comprehensive Income | Financial instruments | Interest rate instruments | SoCalGas
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	1	1	1
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	0	(6)	(12)
Income before income taxes and equity earnings	(47)	(49)	16
Income tax (expense) benefit	11	6	(6)
Income (loss) from continuing operations, net of tax	(36)	(43)	10
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | SoCalGas
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	0	1	2
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Interest rate instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(11)	1	1
Equity earnings	(23)	(48)	29
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Foreign exchange instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Equity earnings	(6)	2	0
Energy-related businesses	(5)	1	(1)
Other income (expense), net	(2)	2	1
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Interest rate and foreign exchange instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	0	(1)	(2)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Net, Cash Flow Hedge, Noncontrolling Interest
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings attributable to noncontrolling interests	$ 14	$ 23	$ 9