DERIVATIVE FINANCIAL INSTRUMENTS - BALANCE SHEET (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current assets: Fixed-price contracts and other derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 26	$ 26
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery	40	74
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	25	22
Derivative assets, Total	$ 91	$ 122
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 277	$ 77
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery	0	0
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	$ 277	$ 77
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	$ (46)	$ (221)
Derivative liability, Additional cash collateral for commodity contracts not subject to rate recovery	0	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	$ (46)	$ (221)
Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(24)	(5)
Derivative liability, Additional cash collateral for commodity contracts not subject to rate recovery	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	$ (24)	$ (5)
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	17
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	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	70
Derivatives designated as hedging instruments: | Other long-term assets | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Commodity contracts subject to rate recovery	1	0
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	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	(9)
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	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	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	173
Derivative asset, subject to master netting arrangement, liability offset	(15)	(169)
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	7	10
Derivative asset, subject to master netting arrangement, liability offset	(5)	(5)
Associated offsetting cash collateral	0	0
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	52
Derivative asset, subject to master netting arrangement, liability offset	(23)	(51)
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	4	8
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)	(170)
Derivative liability, subject to master netting arrangement, asset offset	15	169
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	(55)	(228)
Derivative liability, subject to master netting arrangement, asset offset	5	5
Associated offsetting cash collateral	10	12
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)	(56)
Derivative liability, subject to master netting arrangement, asset offset	23	51
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)	(9)
Derivative liability, subject to master netting arrangement, asset offset	2	2
Associated offsetting cash collateral	4	7
SDG&E | Current assets: Fixed-price contracts and other derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	2	4
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	21	21
Derivative assets, Total	$ 23	$ 25
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	$ 2	$ 6
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	$ 2	$ 6
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	$ (1)	$ (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	$ (1)	$ (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	9
Derivative asset, subject to master netting arrangement, liability offset	(2)	(5)
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	4	8
Derivative asset, subject to master netting arrangement, liability offset	(2)	(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	(13)	(18)
Derivative liability, subject to master netting arrangement, asset offset	2	5
Associated offsetting cash collateral	10	12
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	(6)	(9)
Derivative liability, subject to master netting arrangement, asset offset	2	2
Associated offsetting cash collateral	4	7
SoCalGas | Current assets: Fixed-price contracts and other derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	0	1
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	4	1
Derivative assets, Total	$ 4	$ 2
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	$ 0	$ 0
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	$ 0	$ 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	$ (39)	$ (210)
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	$ (39)	$ (210)
SoCalGas | Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(4)	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)	$ 0
SoCalGas | Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives
Derivatives, Fair Value [Line Items]
Associated offsetting cash collateral	(3)
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	3	1
SoCalGas | Derivatives not designated as hedging instruments: | Other long-term assets
Derivatives, Fair Value [Line Items]
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	0	0
SoCalGas | Derivatives not designated as hedging instruments: | Other current liabilities
Derivatives, Fair Value [Line Items]
Associated offsetting cash collateral	3
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	(42)	(210)
SoCalGas | Derivatives not designated as hedging instruments: | Deferred credits and other
Derivatives, Fair Value [Line Items]
Associated offsetting cash collateral	0
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	$ (4)	$ 0