FAIR VALUE MEASUREMENTS - RECURRING FAIR VALUE MEASURES (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	$ 69	$ 50
Total assets	1,525	1,354
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(32)	(83)
Total liabilities	249	135
Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	51	33
Total assets	467	309
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(9)	(5)
Derivative liabilities	228	69
Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	892	902
Short-term investments held in Rabbi Trust	86	49
Support Agreement, net of related guarantee fees	41	41
Netting adjustment	18	17
Total assets	1,058	1,045
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(23)
Total liabilities	21
Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	25	12
Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	272	288
Total debt securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	595	602
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	43	47
Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	291	300
Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	261	255
Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0	0
Derivative assets, Total	178	267
Foreign exchange instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0
Derivative assets, Total	12
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	0	0
Derivative liabilities	6	8
Foreign exchange instruments | Continuing Operations
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	0
Derivative liabilities	3
Commodity contracts not subject to rate recovery | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	51	33
Derivative assets, Total	277	42
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(9)	(5)
Derivative liabilities	222	61
Commodity contracts subject to rate recovery | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	18	17
Derivative assets, Total	39	53
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(23)	(78)
Derivative liabilities	18	66
Level 1
Assets, Fair Value Disclosure [Abstract]
Total assets	407	373
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	17	37
Level 1 | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Total assets	0	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
Level 1 | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	319	322
Short-term investments held in Rabbi Trust	86	49
Support Agreement, net of related guarantee fees	0	0
Total assets	407	373
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	17
Level 1 | Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	22	9
Level 1 | Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	270	285
Level 1 | Total debt securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	27	28
Level 1 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	27	28
Level 1 | Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 1 | Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 1 | Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Level 1 | Foreign exchange instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
Level 1 | Foreign exchange instruments | Continuing Operations
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0
Level 1 | Commodity contracts not subject to rate recovery | Disposal Group Held-for-sale
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 | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	2	2
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	17	37
Level 2
Assets, Fair Value Disclosure [Abstract]
Total assets	990	879
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	205	125
Level 2 | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Total assets	408	275
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	178	18
Level 2 | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	573	580
Short-term investments held in Rabbi Trust	0	0
Support Agreement, net of related guarantee fees	0	0
Total assets	582	604
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	27
Level 2 | Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	3	3
Level 2 | Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	2	3
Level 2 | Total debt securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	568	574
Level 2 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	16	19
Level 2 | Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	291	300
Level 2 | Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	261	255
Level 2 | Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	178	267
Level 2 | Foreign exchange instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	12
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	6	8
Level 2 | Foreign exchange instruments | Continuing Operations
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	3
Level 2 | Commodity contracts not subject to rate recovery | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	218	8
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	172	10
Level 2 | Commodity contracts subject to rate recovery | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	9	24
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	24	107
Level 3
Assets, Fair Value Disclosure [Abstract]
Total assets	59	52
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	59	56
Level 3 | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Total assets	8	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	59	56
Level 3 | Continuing Operations
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	41	41
Total assets	51	51
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	0
Level 3 | Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Total debt securities | Continuing Operations
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 | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Level 3 | Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	0
Level 3 | Foreign exchange instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
Level 3 | Foreign exchange instruments | Continuing Operations
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0
Level 3 | Commodity contracts not subject to rate recovery
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	59
Derivative liabilities	51
Level 3 | Commodity contracts not subject to rate recovery | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	8	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		56
Level 3 | Commodity contracts subject to rate recovery | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	10	10
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
SDG&E
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	892	902
Netting adjustment	19	12
Total assets	923	926
SDG&E | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	25	12
SDG&E | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	272	288
SDG&E | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	595	602
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	43	47
SDG&E | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	291	300
SDG&E | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	261	255
SDG&E | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	19	12
Derivative assets, Total	31	24
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(17)	(17)
Derivative liabilities	0	0
SDG&E | Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	319	322
Total assets	321	324
SDG&E | Level 1 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	22	9
SDG&E | Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	270	285
SDG&E | Level 1 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	27	28
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	27	28
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 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	2	2
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	17	17
SDG&E | Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	573	580
Total assets	573	580
SDG&E | Level 2 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	3	3
SDG&E | Level 2 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	2	3
SDG&E | Level 2 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	568	574
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	16	19
SDG&E | Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	291	300
SDG&E | Level 2 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	261	255
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	0	0
SDG&E | Level 3
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Total assets	10	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 | Total debt 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 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	10	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)	5
Derivative assets, Total	8	29
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(6)	(61)
Derivative liabilities	18	66
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	20
SoCalGas | Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	9	24
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	24	107
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