DERIVATIVE FINANCIAL INSTRUMENTS - BALANCE SHEET (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative assets, Total		$ 293
Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Derivative assets, Total		5
Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative assets, Total		41
Derivative liabilities, Total		(26)
Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative assets, Total		29
Derivative liabilities, Total		(44)
Current assets: Fixed-price contracts and other derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 21	26
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery		40
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	23	25
Derivative assets, Total	$ 44	$ 91
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Assets held for sale
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 271
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery	38
Derivative assets, Total	$ 309
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets held for sale
Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 9	$ 277
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery		0
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	$ 9	$ 277
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other long-term assets	Other long-term assets
Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	$ (62)	$ (46)
Derivative liability, Additional cash collateral for commodity contracts not subject to rate recovery		0
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Derivative liabilities, Total	$ (62)	$ (46)
Liabilities held for sale
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(69)
Derivative liability, Additional cash collateral for commodity contracts not subject to rate recovery	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities held for sale
Derivative liabilities, Total	$ (69)
Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(4)	(24)
Derivative liability, Additional cash collateral for commodity contracts not subject to rate recovery		0
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Deferred credits and other	Deferred credits and other
Derivative liabilities, Total	$ (4)	$ (24)
Derivatives designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives | Interest rate instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		7
Derivatives designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		4
Derivatives designated as hedging instruments: | Assets held for sale | Interest rate instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	25
Derivatives designated as hedging instruments: | Assets held for sale | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	0
Derivatives designated as hedging instruments: | Other long-term assets | Interest rate instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		28
Derivatives designated as hedging instruments: | Other long-term assets | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		1
Derivatives designated as hedging instruments: | Other current liabilities | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		0
Derivatives designated as hedging instruments: | Other current liabilities | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		0
Derivatives designated as hedging instruments: | Liabilities held for sale | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	0
Derivatives designated as hedging instruments: | Liabilities held for sale | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(8)
Derivatives designated as hedging instruments: | Deferred credits and other | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		0
Derivatives designated as hedging instruments: | Deferred credits and other | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		0
Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives | Interest rate instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		12
Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		16
Derivative asset, subject to master netting arrangement, liability offset		(15)
Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	25	7
Derivative asset, subject to master netting arrangement, liability offset	(4)	(5)
Associated offsetting cash collateral	0	0
Derivatives not designated as hedging instruments: | Assets held for sale | Interest rate instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	242
Derivatives not designated as hedging instruments: | Assets held for sale | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	9
Derivative asset, subject to master netting arrangement, liability offset	(5)
Derivatives not designated as hedging instruments: | Other long-term assets | Interest rate instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		246
Derivatives not designated as hedging instruments: | Other long-term assets | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery		23
Derivative asset, subject to master netting arrangement, liability offset		(23)
Derivatives not designated as hedging instruments: | Other long-term assets | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	11	4
Derivative asset, subject to master netting arrangement, liability offset	(2)	(2)
Associated offsetting cash collateral	0	0
Derivatives not designated as hedging instruments: | Other current liabilities | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		0
Derivatives not designated as hedging instruments: | Other current liabilities | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		(21)
Derivative liability, subject to master netting arrangement, asset offset		15
Derivatives not designated as hedging instruments: | Other current liabilities | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(134)	(55)
Derivative liability, subject to master netting arrangement, asset offset	4	5
Associated offsetting cash collateral	68	10
Derivatives not designated as hedging instruments: | Liabilities held for sale | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	0
Derivatives not designated as hedging instruments: | Liabilities held for sale | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(66)
Derivative liability, subject to master netting arrangement, asset offset	5
Derivatives not designated as hedging instruments: | Deferred credits and other | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		0
Derivatives not designated as hedging instruments: | Deferred credits and other | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset		(43)
Derivative liability, subject to master netting arrangement, asset offset		23
Derivatives not designated as hedging instruments: | Deferred credits and other | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(10)	(10)
Derivative liability, subject to master netting arrangement, asset offset	2	2
Associated offsetting cash collateral	4	4
SDG&E | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative assets, Total	24	25
Derivative liabilities, Total	0	(1)
SDG&E | Current assets: Fixed-price contracts and other derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	4	2
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	13	21
Derivative assets, Total	$ 17	$ 23
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
SDG&E | Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 7	$ 2
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	$ 7	$ 2
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other long-term assets	Other long-term assets
SDG&E | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	$ 0	$ (1)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Derivative liabilities, Total	$ 0	$ (1)
SDG&E | Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	0	0
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Deferred credits and other	Deferred credits and other
Derivative liabilities, Total	$ 0	$ 0
SDG&E | Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	4	4
Derivative asset, subject to master netting arrangement, liability offset	0	(2)
Associated offsetting cash collateral	0	0
SDG&E | Derivatives not designated as hedging instruments: | Other long-term assets | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	8	4
Derivative asset, subject to master netting arrangement, liability offset	(1)	(2)
Associated offsetting cash collateral	0	0
SDG&E | Derivatives not designated as hedging instruments: | Other current liabilities | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(12)	(13)
Derivative liability, subject to master netting arrangement, asset offset	0	2
Associated offsetting cash collateral	12	10
SDG&E | Derivatives not designated as hedging instruments: | Deferred credits and other | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(5)	(6)
Derivative liability, subject to master netting arrangement, asset offset	1	2
Associated offsetting cash collateral	4	4
SoCalGas | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative assets, Total	29	4
Derivative liabilities, Total	(66)	(43)
SoCalGas | Current assets: Fixed-price contracts and other derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	17	0
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	10	4
Derivative assets, Total	$ 27	$ 4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
SoCalGas | Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 2	$ 0
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	$ 2	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other long-term assets	Other long-term assets
SoCalGas | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	$ (62)	$ (39)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Derivative liabilities, Total	$ (62)	$ (39)
SoCalGas | Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(4)	(4)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Deferred credits and other	Deferred credits and other
Derivative liabilities, Total	$ (4)	$ (4)
SoCalGas | Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	21	3
Derivative asset, subject to master netting arrangement, liability offset	(4)	(3)
Associated offsetting cash collateral	0
SoCalGas | Derivatives not designated as hedging instruments: | Other long-term assets | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	3	0
Derivative asset, subject to master netting arrangement, liability offset	(1)	0
Associated offsetting cash collateral	0
SoCalGas | Derivatives not designated as hedging instruments: | Other current liabilities | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(122)	(42)
Derivative liability, subject to master netting arrangement, asset offset	4	3
Associated offsetting cash collateral	56
SoCalGas | Derivatives not designated as hedging instruments: | Deferred credits and other | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative liability, subject to master netting arrangement, before offset	(5)	(4)
Derivative liability, subject to master netting arrangement, asset offset	1	$ 0
Associated offsetting cash collateral	$ 0