FAIR VALUE MEASUREMENTS - RECURRING FAIR VALUE MEASURES (Details) - Recurring - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		$ 890
Short-term investments held in Rabbi Trust		64
Support Agreement, net of related guarantee fees		25
Netting adjustment	$ 80	20
Total	1,313	1,347
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(67)	(59)
Total liabilities	141	70
Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	55
Total	293
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(5)
Derivative liabilities	63
Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	917
Short-term investments held in Rabbi Trust	22
Support Agreement, net of related guarantee fees	39
Netting adjustment	25
Total	1,020
Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		10
Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	21
Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		298
Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	292
Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		582
Total debt securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	604
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
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	54
Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		287
Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	296
Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		228
Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	254
Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Netting adjustment		0
Derivative assets, Total		293
Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0
Derivative assets, Total	214
Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Netting adjustment		0
Derivative assets, Total		5
Foreign exchange instruments | Disposal Group Held-for-sale
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	0
Derivative liabilities	5
Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment		2
Derivative assets, Total		41
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment		(38)
Derivative liabilities		26
Commodity contracts not subject to rate recovery | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	55
Derivative assets, Total	79
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(5)
Derivative liabilities	58
Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment		18
Derivative assets, Total		29
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment		(21)
Derivative liabilities		44
Commodity contracts subject to rate recovery | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	25
Derivative assets, Total	42
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(62)
Derivative liabilities	78
Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		344
Short-term investments held in Rabbi Trust		64
Support Agreement, net of related guarantee fees		0
Total	361	414
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	34	21
Level 1 | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Total	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0
Level 1 | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	336
Short-term investments held in Rabbi Trust	22
Support Agreement, net of related guarantee fees	0
Total	361
Level 1 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		8
Level 1 | Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	19
Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		295
Level 1 | Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	289
Level 1 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		41
Level 1 | Total debt securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	28
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
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	28
Level 1 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Level 1 | Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0
Level 1 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Level 1 | Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0
Level 1 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		0
Level 1 | Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0
Level 1 | Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		0
Level 1 | Foreign exchange instruments | Disposal Group Held-for-sale
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
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		1
Level 1 | Commodity contracts not subject to rate recovery | 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
Level 1 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		6
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		20
Level 1 | Commodity contracts subject to rate recovery | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	3
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	34
Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		546
Short-term investments held in Rabbi Trust		0
Support Agreement, net of related guarantee fees		0
Total	827	884
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	174	108
Level 2 | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Total	238
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	68
Level 2 | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	581
Short-term investments held in Rabbi Trust	0
Support Agreement, net of related guarantee fees	0
Total	589
Level 2 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		2
Level 2 | Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	2
Level 2 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		3
Level 2 | Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	3
Level 2 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		541
Level 2 | Total debt securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	576
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
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	26
Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		287
Level 2 | Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	296
Level 2 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		228
Level 2 | Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	254
Level 2 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		293
Level 2 | Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	214
Level 2 | Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		5
Level 2 | Foreign exchange instruments | Disposal Group Held-for-sale
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	5
Level 2 | Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		39
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		63
Level 2 | Commodity contracts not subject to rate recovery | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	24
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	63
Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		45
Level 2 | Commodity contracts subject to rate recovery | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	8
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	106
Level 3
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Short-term investments held in Rabbi Trust		0
Support Agreement, net of related guarantee fees		25
Total	45	29
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	0	0
Level 3 | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Total	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0
Level 3 | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0
Short-term investments held in Rabbi Trust	0
Support Agreement, net of related guarantee fees	39
Total	45
Level 3 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Level 3 | Short-term investments, primarily cash equivalents | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0
Level 3 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Level 3 | Equity securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0
Level 3 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Level 3 | Total debt securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	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
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
Level 3 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Level 3 | Municipal bonds | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0
Level 3 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts		0
Level 3 | Other securities | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0
Level 3 | Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		0
Level 3 | Interest rate instruments | Disposal Group Held-for-sale
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0
Level 3 | Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		0
Level 3 | Foreign exchange instruments | Disposal Group Held-for-sale
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
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		0
Level 3 | Commodity contracts not subject to rate recovery | 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
Level 3 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		4
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting		0
Level 3 | Commodity contracts subject to rate recovery | Continuing Operations
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	6
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0
SDG&E
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	917	890
Netting adjustment	22	17
Total	948	915
SDG&E | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	21	10
SDG&E | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	292	298
SDG&E | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	604	582
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	54	67
SDG&E | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	296	287
SDG&E | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	254	228
SDG&E | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	22	17
Derivative assets, Total	31	25
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(14)	(18)
Derivative liabilities	0	1
SDG&E | Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	336	344
Total	339	348
SDG&E | Level 1 | Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	19	8
SDG&E | Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	289	295
SDG&E | Level 1 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	28	41
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	28	41
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	3	4
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	14	18
SDG&E | Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	581	546
Total	581	546
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	3
SDG&E | Level 2 | Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	576	541
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	26
SDG&E | Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	296	287
SDG&E | Level 2 | Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	254	228
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	1
SDG&E | Level 3
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Total	6	4
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	6	4
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	3	1
Derivative assets, Total	11	4
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(48)	(3)
Derivative liabilities	78	43
SoCalGas | Level 1 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	0	2
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	20	2
SoCalGas | Level 2 | Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	8	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	106	44
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