FAIR VALUE MEASUREMENTS - RECURRING FAIR VALUE MEASURES (Details) - Recurring - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	$ 905	$ 879
Short-term investments held in Rabbi Trust	47	67
Support Agreement, net of related guarantee fees	23	23
Netting adjustment	(52)	96
Total	1,361	1,168
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(152)	(19)
Total	49	226
Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	23	21
Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	321	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	61	51
Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	273	275
Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	227	220
Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	561	546
Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0	0
Derivative assets, Total	284	87
Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	(61)	74
Derivative assets, Total	70	79
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(128)	0
Derivative liabilities	7	6
Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	9	22
Derivative assets, Total	29	33
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(24)	(19)
Derivative liabilities	42	211
Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0
Derivative assets, Total	3
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment		0
Derivative liabilities		9
Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	376	361
Short-term investments held in Rabbi Trust	47	67
Support Agreement, net of related guarantee fees	0	0
Total	435	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	20	19
Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	318	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	38	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	38	34
Level 1 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	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	0	0
Level 1 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	12	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	21	20
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 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	529	518
Short-term investments held in Rabbi Trust	0	0
Support Agreement, net of related guarantee fees	0	0
Total	949	611
Liabilities, Fair Value Disclosure [Abstract]
Total	180	225
Level 2 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	3	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	23	17
Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	273	275
Level 2 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	227	220
Level 2 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	523	512
Level 2 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	284	87
Level 2 | Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	131	5
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	135	6
Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	2	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	45	210
Level 2 | Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	3
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		9
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	23	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 | 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	6	10
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, 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
SDG&E
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	905	879
Netting adjustment	10	21
Total	933	910
SDG&E | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	23	21
SDG&E | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	321	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	61	51
SDG&E | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	273	275
SDG&E | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	227	220
SDG&E | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	561	546
SDG&E | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	10	21
Derivative assets, Total	28	31
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(22)	(19)
Derivative liabilities	5	1
SDG&E | Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	376	361
Total	388	361
SDG&E | Level 1 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	20	19
SDG&E | Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	318	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	38	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	38	34
SDG&E | Level 1 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	12	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	21	20
SDG&E | Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	529	518
Total	529	518
SDG&E | Level 2 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	3	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	23	17
SDG&E | Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	273	275
SDG&E | Level 2 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	227	220
SDG&E | Level 2 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	523	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	6	0
SDG&E | Level 3
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Total	6	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	6	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	1	2
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(2)	0
Derivative liabilities	37	210
SoCalGas | Level 1 | 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
SoCalGas | Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	2	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	39	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