FAIR VALUE MEASUREMENTS - RECURRING FAIR VALUE MEASURES (Details) - Recurring - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	$ 890	$ 890
Short-term investments held in Rabbi Trust	49	64
Support Agreement, net of related guarantee fees	39	25
Netting adjustment	62	20
Total	1,329	1,347
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(60)	(59)
Total	85	70
Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	16	10
Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	285	298
Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	589	582
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	49	67
Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	294	287
Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	246	228
Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	0	0
Derivative assets, Total	224	293
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	7
Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	52	2
Derivative assets, Total	85	41
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(28)	(38)
Derivative liabilities	45	26
Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	10	18
Derivative assets, Total	42	29
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(32)	(21)
Derivative liabilities	33	44
Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	327	344
Short-term investments held in Rabbi Trust	49	64
Support Agreement, net of related guarantee fees	0	0
Total	385	414
Liabilities, Fair Value Disclosure [Abstract]
Total	13	21
Level 1 \| Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	14	8
Level 1 \| Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	282	295
Level 1 \| Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	31	41
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	31	41
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 \| 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	0	1
Level 1 \| Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	9	6
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	13	20
Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	563	546
Short-term investments held in Rabbi Trust	0	0
Support Agreement, net of related guarantee fees	0	0
Total	840	884
Liabilities, Fair Value Disclosure [Abstract]
Total	132	108
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	3
Level 2 \| Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	558	541
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	18	26
Level 2 \| Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	294	287
Level 2 \| Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	246	228
Level 2 \| Interest rate instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	224	293
Level 2 \| Foreign exchange instruments
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting		5
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	7
Level 2 \| Commodity contracts not subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	33	39
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	73	63
Level 2 \| Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	20	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	52	45
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	39	25
Total	42	29
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 \| Total debt 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 \| 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	3	4
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	0	0
SDG&E
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	890	890
Netting adjustment	28	17
Total	929	915
SDG&E \| Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	16	10
SDG&E \| Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	285	298
SDG&E \| Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	589	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	49	67
SDG&E \| Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	294	287
SDG&E \| Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	246	228
SDG&E \| Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Netting adjustment	28	17
Derivative assets, Total	39	25
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(12)	(18)
Derivative liabilities	1	1
SDG&E \| Level 1
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	327	344
Total	335	348
SDG&E \| Level 1 \| Short-term investments, primarily cash equivalents
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	14	8
SDG&E \| Level 1 \| Equity securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	282	295
SDG&E \| Level 1 \| Total debt securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	31	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	31	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	8	4
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	12	18
SDG&E \| Level 2
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	563	546
Total	563	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	558	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	18	26
SDG&E \| Level 2 \| Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	294	287
SDG&E \| Level 2 \| Other securities
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	246	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	1	1
SDG&E \| Level 3
Assets, Fair Value Disclosure [Abstract]
Total nuclear decommissioning trusts	0	0
Total	3	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	3	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	(18)	1
Derivative assets, Total	3	4
Liabilities, Fair Value Disclosure [Abstract]
Netting adjustment	(20)	(3)
Derivative liabilities	32	43
SoCalGas \| Level 1 \| Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	1	2
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	1	2
SoCalGas \| Level 2 \| Commodity contracts subject to rate recovery
Assets, Fair Value Disclosure [Abstract]
Derivative asset, before netting	20	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative liability, before netting	51	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

Guarantor Obligations, Asset, Fair Value Disclosure

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- Definition

Short Term Investments Held In Trusts, Fair Value Disclosure

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- Definition

Fair value portion of asset recognized for present right to economic benefit.

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- Definition

The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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