DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE INSTRUMENTS ON THE CONDENSED BALANCE SHEET (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 30	$ 26
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery	55	74
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	26	22
Derivative assets, Total	111	122
Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	79	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	79	77
Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(45)	(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 liabilities, Total	(45)	(221)
Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(30)	(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 liabilities, Total	(30)	(5)
Derivatives designated as hedging instruments: | Other current assets | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	14	17
Derivatives designated as hedging instruments: | Other current assets | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	5	0
Derivatives designated as hedging instruments: | Other long-term assets | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	23	70
Derivatives designated as hedging instruments: | Other long-term assets | Foreign exchange instruments
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	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	(1)	(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	(3)	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: | Other current assets | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	0
Derivatives not designated as hedging instruments: | Other current assets | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	22	173
Derivative asset, subject to master netting arrangement, liability offset	(14)	(169)
Derivatives not designated as hedging instruments: | Other current assets | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	5	10
Derivative asset, subject to master netting arrangement, liability offset	(2)	(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]
Derivative asset, subject to master netting arrangement, before offset	40
Derivatives not designated as hedging instruments: | Other long-term assets | Commodity contracts not subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	37	52
Derivative asset, subject to master netting arrangement, liability offset	(26)	(51)
Derivatives not designated as hedging instruments: | Other long-term assets | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	7	8
Derivative asset, subject to master netting arrangement, liability offset	(3)	(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	(17)	(170)
Derivative liability, subject to master netting arrangement, asset offset	14	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	(52)	(228)
Derivative liability, subject to master netting arrangement, asset offset	2	5
Associated offsetting cash collateral	9	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	(47)	(56)
Derivative liability, subject to master netting arrangement, asset offset	26	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	(14)	(9)
Derivative liability, subject to master netting arrangement, asset offset	3	2
Associated offsetting cash collateral	5	7
SDG&E | Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	3	4
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	24	21
Derivative assets, Total	27	25
SDG&E | Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	4	6
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	4	6
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 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 liabilities, Total	0	0
SDG&E | Derivatives not designated as hedging instruments: | Other current assets | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	4	9
Derivative asset, subject to master netting arrangement, liability offset	(1)	(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]
Derivative asset, subject to master netting arrangement, before offset	7	8
Derivative asset, subject to master netting arrangement, liability offset	(3)	(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	(11)	(18)
Derivative liability, subject to master netting arrangement, asset offset	1	5
Associated offsetting cash collateral	9	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	(8)	(9)
Derivative liability, subject to master netting arrangement, asset offset	3	2
Associated offsetting cash collateral	5	7
SoCalGas | Other current assets
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	2	1
Derivative assets, Total	2	2
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
SoCalGas | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(40)	(210)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative liabilities, Total	(40)	(210)
SoCalGas | Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(6)	0
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative liabilities, Total	(6)	0
SoCalGas | Derivatives not designated as hedging instruments: | Other current assets
Derivatives, Fair Value [Line Items]
Associated offsetting cash collateral	(1)
SoCalGas | Derivatives not designated as hedging instruments: | Other current assets | Commodity contracts subject to rate recovery
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	1	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]
Derivative asset, subject to master netting arrangement, before offset	0	0
SoCalGas | Derivatives not designated as hedging instruments: | Other current liabilities
Derivatives, Fair Value [Line Items]
Associated offsetting cash collateral	1
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	(41)	(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	$ (6)	$ 0