DERIVATIVE FINANCIAL INSTRUMENTS - BALANCE SHEET (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Current assets: Fixed-price contracts and other derivatives
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	$ 26	$ 333
Additional cash collateral for commodity contracts not subject to rate recovery	74	451
Additional cash collateral for commodity contracts subject to rate recovery	22	18
Total	122	802
Other long-term assets
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	77	152
Additional cash collateral for commodity contracts not subject to rate recovery	0	0
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	77	152
Other current liabilities
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	(221)	(280)
Additional cash collateral for commodity contracts not subject to rate recovery	0	0
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	(221)	(280)
Deferred credits and other
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	(5)	(94)
Additional cash collateral for commodity contracts not subject to rate recovery	0	0
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	(5)	(94)
Derivatives designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments	17	10
Foreign exchange instruments	0	0
Interest rate and foreign exchange instruments		0
Derivatives designated as hedging instruments: | Other long-term assets
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments	70	33
Foreign exchange instruments	0	0
Interest rate and foreign exchange instruments		0
Derivatives designated as hedging instruments: | Other current liabilities
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments	0	0
Foreign exchange instruments	(9)	(7)
Interest rate and foreign exchange instruments		(105)
Derivatives designated as hedging instruments: | Deferred credits and other
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments	0	0
Foreign exchange instruments	0	(1)
Interest rate and foreign exchange instruments		0
Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments		33
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts not subject to rate recovery	173	480
Associated offsetting commodity contracts	(169)	(301)
Commodity contracts subject to rate recovery	10	138
Associated offsetting commodity contracts	(5)	(27)
Associated offsetting cash collateral	0
Derivatives not designated as hedging instruments: | Other long-term assets
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments		0
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts not subject to rate recovery	52	133
Associated offsetting commodity contracts	(51)	(39)
Commodity contracts subject to rate recovery	8	27
Associated offsetting commodity contracts	(2)	(2)
Associated offsetting cash collateral	0
Derivatives not designated as hedging instruments: | Other current liabilities
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments		0
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts not subject to rate recovery	(170)	(399)
Associated offsetting commodity contracts	169	301
Commodity contracts subject to rate recovery	(228)	(97)
Associated offsetting commodity contracts	5	27
Associated offsetting cash collateral	12
Derivatives not designated as hedging instruments: | Deferred credits and other
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate instruments		0
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts not subject to rate recovery	(56)	(132)
Associated offsetting commodity contracts	51	39
Commodity contracts subject to rate recovery	(9)	(2)
Associated offsetting commodity contracts	2	2
Associated offsetting cash collateral	7
SDG&E | Current assets: Fixed-price contracts and other derivatives
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	4	95
Additional cash collateral for commodity contracts subject to rate recovery	21	17
Total	25	112
SDG&E | Other long-term assets
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	6	25
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	6	25
SDG&E | Other current liabilities
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	(1)	(1)
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	(1)	(1)
SDG&E | Deferred credits and other
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	0	0
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	0	0
SDG&E | Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	9	107
Associated offsetting commodity contracts	(5)	(12)
Associated offsetting cash collateral	0
SDG&E | Derivatives not designated as hedging instruments: | Other long-term assets
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	8	27
Associated offsetting commodity contracts	(2)	(2)
Associated offsetting cash collateral	0
SDG&E | Derivatives not designated as hedging instruments: | Other current liabilities
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	(18)	(13)
Associated offsetting commodity contracts	5	12
Associated offsetting cash collateral	12
SDG&E | Derivatives not designated as hedging instruments: | Deferred credits and other
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	(9)	(2)
Associated offsetting commodity contracts	2	2
Associated offsetting cash collateral	7
SoCalGas | Current assets: Fixed-price contracts and other derivatives
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	1	16
Additional cash collateral for commodity contracts subject to rate recovery	1	1
Total	2	17
SoCalGas | Other long-term assets
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	0	0
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	0	0
SoCalGas | Other current liabilities
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	(210)	(69)
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	(210)	(69)
SoCalGas | Deferred credits and other
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Net amounts presented on the balance sheet	0	0
Additional cash collateral for commodity contracts subject to rate recovery	0	0
Total	0	0
SoCalGas | Derivatives not designated as hedging instruments: | Current assets: Fixed-price contracts and other derivatives
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	1	31
Associated offsetting commodity contracts		(15)
SoCalGas | Derivatives not designated as hedging instruments: | Other long-term assets
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	0	0
Associated offsetting commodity contracts		0
SoCalGas | Derivatives not designated as hedging instruments: | Other current liabilities
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	(210)	(84)
Associated offsetting commodity contracts		15
SoCalGas | Derivatives not designated as hedging instruments: | Deferred credits and other
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Commodity contracts subject to rate recovery	$ 0	0
Associated offsetting commodity contracts		$ 0