DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE INSTRUMENTS ON THE CONDENSED BALANCE SHEET (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	$ 24	$ 26
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery	87	40
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	25	25
Derivative assets, Total	136	91
Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	206	277
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	206	277
Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(40)	(46)
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	(40)	(46)
Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(33)	(24)
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	(33)	(24)
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	6	7
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	1	4
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	24	28
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	0	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	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)	0
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: | Other current assets | Interest rate instruments
Derivatives, Fair Value [Line Items]
Derivative asset, subject to master netting arrangement, before offset	11	12
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	16	16
Derivative asset, subject to master netting arrangement, liability offset	(12)	(15)
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	14	7
Derivative asset, subject to master netting arrangement, liability offset	(12)	(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	179	246
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	17	23
Derivative asset, subject to master netting arrangement, liability offset	(16)	(23)
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	4	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	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	(26)	(21)
Derivative liability, subject to master netting arrangement, asset offset	12	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	(41)	(55)
Derivative liability, subject to master netting arrangement, asset offset	12	5
Associated offsetting cash collateral	4	10
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	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	(39)	(43)
Derivative liability, subject to master netting arrangement, asset offset	16	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	(17)	(10)
Derivative liability, subject to master netting arrangement, asset offset	2	2
Associated offsetting cash collateral	5	4
SDG&E | Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	2	2
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	23	21
Derivative assets, Total	25	23
SDG&E | Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative asset, Net amounts presented on the balance sheet	2	2
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative assets, Total	2	2
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	9	4
Derivative asset, subject to master netting arrangement, liability offset	(7)	(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]
Derivative asset, subject to master netting arrangement, before offset	4	4
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	(12)	(13)
Derivative liability, subject to master netting arrangement, asset offset	7	2
Associated offsetting cash collateral	4	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	(7)	(6)
Derivative liability, subject to master netting arrangement, asset offset	2	2
Associated offsetting cash collateral	5	4
SoCalGas | Other current 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	2	4
Derivative assets, Total	2	4
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	(24)	(39)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative liabilities, Total	(24)	(39)
SoCalGas | Deferred credits and other
Derivatives, Fair Value [Line Items]
Derivative liability, Net amounts presented on the balance sheet	(10)	(4)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery	0	0
Derivative liabilities, Total	(10)	(4)
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	5	3
Derivative asset, subject to master netting arrangement, liability offset	(5)	(3)
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
Derivative asset, subject to master netting arrangement, liability offset	0	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	(29)	(42)
Derivative liability, subject to master netting arrangement, asset offset	5	3
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	(10)	(4)
Derivative liability, subject to master netting arrangement, asset offset	$ 0	$ 0