v3.26.1
DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE INSTRUMENTS ON THE CONDENSED BALANCE SHEET (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Balance Sheet Location [Axis]: us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent    
Derivatives, Fair Value [Line Items]    
Derivative asset, Net amounts presented on the balance sheet $ 265 $ 271
Derivative asset, Additional cash collateral for commodity contracts not subject to rate recovery 83 38
Derivative assets, Total 348 309
Balance Sheet Location [Axis]: us-gaap:DeferredCreditsAndOtherLiabilities    
Derivatives, Fair Value [Line Items]    
Derivative liability, Net amounts presented on the balance sheet (9) (4)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery 0 0
Derivative liabilities, Total (9) (4)
Balance Sheet Location [Axis]: us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent    
Derivatives, Fair Value [Line Items]    
Derivative liability, Net amounts presented on the balance sheet (25) (69)
Derivative liability, Additional cash collateral for commodity contracts not subject to rate recovery 0 0
Derivative liabilities, Total (25) (69)
Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent    
Derivatives, Fair Value [Line Items]    
Derivative asset, Net amounts presented on the balance sheet 7 21
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery 29 23
Derivative assets, Total 36 44
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent    
Derivatives, Fair Value [Line Items]    
Derivative asset, Net amounts presented on the balance sheet 10 9
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery 0 0
Derivative assets, Total 10 9
Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent    
Derivatives, Fair Value [Line Items]    
Derivative liability, Net amounts presented on the balance sheet (17) (62)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery 0 0
Derivative liabilities, Total (17) (62)
Derivatives designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent | Interest rate instruments    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 26 25
Derivatives designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent | Foreign exchange instruments    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 0 0
Derivatives designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent | Interest rate instruments    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset 0 0
Derivatives designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent | Foreign exchange instruments    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (7) (8)
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent | Interest rate instruments    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 173 242
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent | Foreign exchange instruments    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 1  
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent | Commodity contracts not subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 69 9
Derivative asset, subject to master netting arrangement, liability offset (4) (5)
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:DeferredCreditsAndOtherLiabilities | 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 6 2
Associated offsetting cash collateral 2 4
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent | 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: | Balance Sheet Location [Axis]: us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent | Foreign exchange instruments    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset 3  
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent | Commodity contracts not subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (19) (66)
Derivative liability, subject to master netting arrangement, asset offset 4 5
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 36 25
Derivative asset, subject to master netting arrangement, liability offset (29) (4)
Associated offsetting cash collateral 0 0
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 16 11
Derivative asset, subject to master netting arrangement, liability offset (6) (2)
Associated offsetting cash collateral 0 0
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent | Foreign exchange instruments    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (2)  
Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (53) (134)
Derivative liability, subject to master netting arrangement, asset offset 29 4
Associated offsetting cash collateral 9 68
SDG&E | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative assets, Total 41 24
Derivative liabilities, Total 0 0
SDG&E | Balance Sheet Location [Axis]: us-gaap:DeferredCreditsAndOtherLiabilities    
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 | Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent    
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 28 13
Derivative assets, Total 31 17
SDG&E | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent    
Derivatives, Fair Value [Line Items]    
Derivative asset, Net amounts presented on the balance sheet 10 7
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery 0 0
Derivative assets, Total 10 7
SDG&E | Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent    
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: | Balance Sheet Location [Axis]: us-gaap:DeferredCreditsAndOtherLiabilities | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (4) (5)
Derivative liability, subject to master netting arrangement, asset offset 2 1
Associated offsetting cash collateral 2 4
SDG&E | Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 3 4
Derivative asset, subject to master netting arrangement, liability offset 0 0
Associated offsetting cash collateral 0 0
SDG&E | Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 12 8
Derivative asset, subject to master netting arrangement, liability offset (2) (1)
Associated offsetting cash collateral 0 0
SDG&E | Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (9) (12)
Derivative liability, subject to master netting arrangement, asset offset 0 0
Associated offsetting cash collateral 9 12
SoCalGas | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative assets, Total 5 29
Derivative liabilities, Total (24) (66)
SoCalGas | Balance Sheet Location [Axis]: us-gaap:DeferredCreditsAndOtherLiabilities    
Derivatives, Fair Value [Line Items]    
Derivative liability, Net amounts presented on the balance sheet (9) (4)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery 0 0
Derivative liabilities, Total (9) (4)
SoCalGas | Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent    
Derivatives, Fair Value [Line Items]    
Derivative asset, Net amounts presented on the balance sheet 4 17
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery 1 10
Derivative assets, Total 5 27
SoCalGas | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent    
Derivatives, Fair Value [Line Items]    
Derivative asset, Net amounts presented on the balance sheet 0 2
Derivative asset, Additional cash collateral for commodity contracts subject to rate recovery 0 0
Derivative assets, Total 0 2
SoCalGas | Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent    
Derivatives, Fair Value [Line Items]    
Derivative liability, Net amounts presented on the balance sheet (15) (62)
Derivative liability, Additional cash collateral for commodity contracts subject to rate recovery 0 0
Derivative liabilities, Total (15) (62)
SoCalGas | Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:DeferredCreditsAndOtherLiabilities | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (13) (5)
Derivative liability, subject to master netting arrangement, asset offset 4 1
Associated offsetting cash collateral   0
SoCalGas | Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 33 21
Derivative asset, subject to master netting arrangement, liability offset (29) (4)
Associated offsetting cash collateral   0
SoCalGas | Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative asset, subject to master netting arrangement, before offset 4 3
Derivative asset, subject to master netting arrangement, liability offset (4) (1)
Associated offsetting cash collateral   0
SoCalGas | Derivatives not designated as hedging instruments: | Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent | Commodity contracts subject to rate recovery    
Derivatives, Fair Value [Line Items]    
Derivative liability, subject to master netting arrangement, before offset (44) (122)
Derivative liability, subject to master netting arrangement, asset offset $ 29 4
Associated offsetting cash collateral   $ 56