FAIR VALUE MEASUREMENTS - RECURRING FAIR VALUE MEASURES (Details) - Fair Value, Recurring - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	$ 890	$ 879
Short-term investments held in Rabbi Trust	64	67
Support Agreement, net of related guarantee fees	25	23
Netting adjustment	20	96
Total	1,347	1,168
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(59)	(19)
Total	70	226
Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	10	21
Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	298	312
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	67	51
Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	287	275
Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	228	220
Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	582	546
Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0	0
Derivative assets, Total	293	87
Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0
Derivative assets, Total	5
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment		0
Derivative liabilities		9
Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	2	74
Derivative assets, Total	41	79
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(38)	0
Derivative liabilities	26	6
Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	18	22
Derivative assets, Total	29	33
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(21)	(19)
Derivative liabilities	44	211
Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	344	361
Short-term investments held in Rabbi Trust	64	67
Support Agreement, net of related guarantee fees	0	0
Total	414	428
Liabilities, Fair Value Disclosure [Abstract]
Total	21	20
Level 1 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	8	19
Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	295	308
Level 1 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	41	34
Level 1 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 1 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 1 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	41	34
Level 1 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Level 1 | Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		0
Level 1 | Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	1	0
Level 1 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	6	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	20	20
Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	546	518
Short-term investments held in Rabbi Trust	0	0
Support Agreement, net of related guarantee fees	0	0
Total	884	611
Liabilities, Fair Value Disclosure [Abstract]
Total	108	225
Level 2 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	2	2
Level 2 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	3	4
Level 2 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	26	17
Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	287	275
Level 2 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	228	220
Level 2 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	541	512
Level 2 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	293	87
Level 2 | Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	5
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		9
Level 2 | Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	39	5
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	63	6
Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	1	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	45	210
Level 3
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Short-term investments held in Rabbi Trust	0	0
Support Agreement, net of related guarantee fees	25	23
Total	29	33
Liabilities, Fair Value Disclosure [Abstract]
Total	0	0
Level 3 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Level 3 | Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		0
Level 3 | Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
Level 3 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	4	10
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
SDG&E
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	890	879
Netting adjustment	17	21
Total	915	910
SDG&E | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	10	21
SDG&E | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	298	312
SDG&E | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	67	51
SDG&E | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	287	275
SDG&E | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	228	220
SDG&E | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	582	546
SDG&E | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	17	21
Derivative assets, Total	25	31
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(18)	(19)
Derivative liabilities	1	1
SDG&E | Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	344	361
Total	348	361
SDG&E | Level 1 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	8	19
SDG&E | Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	295	308
SDG&E | Level 1 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	41	34
SDG&E | Level 1 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 1 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 1 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	41	34
SDG&E | Level 1 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	4	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	18	20
SDG&E | Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	546	518
Total	546	518
SDG&E | Level 2 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	2	2
SDG&E | Level 2 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	3	4
SDG&E | Level 2 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	26	17
SDG&E | Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	287	275
SDG&E | Level 2 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	228	220
SDG&E | Level 2 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	541	512
SDG&E | Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	1	0
SDG&E | Level 3
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Total	4	10
SDG&E | Level 3 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 3 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 3 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 3 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 3 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 3 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
SDG&E | Level 3 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	4	10
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
SoCalGas | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	1	1
Derivative assets, Total	4	2
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(3)	0
Derivative liabilities	43	210
SoCalGas | Level 1 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	2	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	2	0
SoCalGas | Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	1	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	44	210
SoCalGas | Level 3 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	$ 0	$ 0