v2.4.1.9

DERIVATIVE FINANCIAL INSTRUMENTS 3 (Details) (USD $) | Mar. 31, 2015 | Dec. 31, 2014
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OtherCurrentAssetsMember |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | $ 10,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1],[2] | $ 10,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Commodity contracts not subject to rate recovery |  |  | 25,000,000 sre_CommodityContractsNotSubjectToRateRecoveryDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | 11,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | 8,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Commodity contracts not subject to rate recovery | 129,000,000 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | 143,000,000 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Associated offsetting commodity contracts not subject to rate recovery | (123,000,000)sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | (129,000,000)sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | (11,000,000)sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Commodity contracts subject to rate recovery | 28,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | 36,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Associated cash collateral commodity contracts subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Associated offsetting commodity contracts subject to rate recovery | (1,000,000)sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | (3,000,000)sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Net amount presented on balance sheet | 54,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | 79,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Additional margin posted for commodity contracts not subject to rate recovery | 16,000,000 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] |  |
Additional margin posted for commodity contracts subject to rate recovery | 19,000,000 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1] | 14,000,000 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1]
Total | 89,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1],[3] | 93,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | [1],[3]
OtherCurrentAssetsMember | San Diego Gas and Electric Company [Member] |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | 0 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [2] | 0 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | 0 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Commodity contracts subject to rate recovery | 26,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 32,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated cash collateral commodity contracts subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated offsetting commodity contracts subject to rate recovery |  |  | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Net amount presented on balance sheet | 26,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 32,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Additional margin posted for commodity contracts not subject to rate recovery | 1,000,000 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 17,000,000 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 12,000,000 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Total | 44,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3] | 44,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3]
OtherCurrentAssetsMember | Southern California Gas Company [Member] |  |  |  |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | 0 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Commodity contracts subject to rate recovery | 2,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1] | 4,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1]
Associated offsetting commodity contracts subject to rate recovery | (1,000,000)sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1] | (3,000,000)sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1]
Net amount presented on balance sheet | 1,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1] | 1,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1]
Additional margin posted for commodity contracts not subject to rate recovery | 1,000,000 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1] |  |
Additional margin posted for commodity contracts subject to rate recovery | 2,000,000 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1] | 2,000,000 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1]
Total | 4,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1] | 3,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [1]
OtherNoncurrentAssetsMember |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | 3,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember | [2] | 3,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Commodity contracts not subject to rate recovery |  |  | 0 sre_CommodityContractsNotSubjectToRateRecoveryDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | 28,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 27,000,000 sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Commodity contracts not subject to rate recovery | 25,000,000 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 32,000,000 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Associated offsetting commodity contracts not subject to rate recovery | (21,000,000)sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | (27,000,000)sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Commodity contracts subject to rate recovery | 76,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 76,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Associated cash collateral commodity contracts subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Associated offsetting commodity contracts subject to rate recovery | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | (1,000,000)sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Net amount presented on balance sheet | 111,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 110,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |
Total | 111,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember | [3] | 110,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember | [3]
OtherNoncurrentAssetsMember | San Diego Gas and Electric Company [Member] |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | 0 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [2] | 0 sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | 0 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Commodity contracts subject to rate recovery | 76,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 76,000,000 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated cash collateral commodity contracts subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 0 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated offsetting commodity contracts subject to rate recovery |  |  | (1,000,000)sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Net amount presented on balance sheet | 76,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 75,000,000 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Total | 76,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3] | 75,000,000 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3]
OtherNoncurrentAssetsMember | Southern California Gas Company [Member] |  |  |  |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | 0 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Commodity contracts subject to rate recovery | 0 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Associated offsetting commodity contracts subject to rate recovery | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Net amount presented on balance sheet | 0 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Total | 0 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
OtherCurrentLiabilitiesMember |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | (17,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [2],[4] | (17,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Commodity contracts not subject to rate recovery |  |  | 0 sre_CommodityContractsNotSubjectToRateRecoveryDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | (7,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | (7,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Commodity contracts not subject to rate recovery | (137,000,000)sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | (135,000,000)sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Associated offsetting commodity contracts not subject to rate recovery | 123,000,000 sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | 129,000,000 sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Associated cash collateral commodity contracts not subject to rate recovery | 10,000,000 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Commodity contracts subject to rate recovery | (35,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | (36,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Associated cash collateral commodity contracts subject to rate recovery | 27,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | 23,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Associated offsetting commodity contracts subject to rate recovery | 1,000,000 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | 3,000,000 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Net amount presented on balance sheet | (35,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | (40,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4] | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [4]
Total | (35,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [3],[4] | (40,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember | [3],[4]
OtherCurrentLiabilitiesMember | San Diego Gas and Electric Company [Member] |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | (16,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [2] | (16,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | (1,000,000)sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 1,000,000 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Commodity contracts subject to rate recovery | (34,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | (32,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated cash collateral commodity contracts subject to rate recovery | 27,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 23,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated offsetting commodity contracts subject to rate recovery |  |  | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Net amount presented on balance sheet | (23,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | (25,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Total | (23,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3] | (25,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3]
OtherCurrentLiabilitiesMember | Southern California Gas Company [Member] |  |  |  |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | (2,000,000)sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 2,000,000 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Commodity contracts subject to rate recovery | (1,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4] | (4,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4]
Associated offsetting commodity contracts subject to rate recovery | 1,000,000 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4] | 3,000,000 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4]
Net amount presented on balance sheet | 0 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4] | (1,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4]
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4] |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4] | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4]
Total | 0 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4] | (1,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember | [4]
OtherNoncurrentLiabilitiesMember |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | (130,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember | [2] | (109,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Commodity contracts not subject to rate recovery |  |  | 0 sre_CommodityContractsNotSubjectToRateRecoveryDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | (25,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | (22,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Commodity contracts not subject to rate recovery | (22,000,000)sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | (29,000,000)sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Associated offsetting commodity contracts not subject to rate recovery | 21,000,000 sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | 27,000,000 sre_DerivativeOffsettingCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Associated cash collateral commodity contracts not subject to rate recovery | 1,000,000 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Commodity contracts subject to rate recovery | (33,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | (20,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Associated cash collateral commodity contracts subject to rate recovery | 27,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | 13,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Associated offsetting commodity contracts subject to rate recovery | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | 1,000,000 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Net amount presented on balance sheet | (161,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | (139,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Total | (161,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember | [3] | (139,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember | [3]
OtherNoncurrentLiabilitiesMember | San Diego Gas and Electric Company [Member] |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net [Abstract] |  |  |  |
Interest rate and foreign exchange instruments | (32,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [2] | (31,000,000)sre_DerivativeInterestRateAndForeignExchangeInstrumentsDesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | 0 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Commodity contracts subject to rate recovery | (33,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | (20,000,000)sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated cash collateral commodity contracts subject to rate recovery | 27,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 13,000,000 sre_AssociatedCashCollateralCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Associated offsetting commodity contracts subject to rate recovery |  |  | 1,000,000 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Net amount presented on balance sheet | (38,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | (37,000,000)sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Total | (38,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3] | (37,000,000)us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember | [3]
OtherNoncurrentLiabilitiesMember | Southern California Gas Company [Member] |  |  |  |
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract] |  |  |  |
Commodity contracts not subject to rate recovery | 0 sre_DerivativeCommodityContractsNotSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Associated cash collateral commodity contracts not subject to rate recovery | 0 sre_AssociatedCashCollateralCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Commodity contracts subject to rate recovery | 0 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_DerivativeCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Associated offsetting commodity contracts subject to rate recovery | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_DerivativeOffsettingCommodityContractsSubjectToRateRecoveryNondesignated / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Net amount presented on balance sheet | 0 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_OtherDerivativesAsHedgingInstrumentsAtFairValueNetBeforeCashCollateral / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Additional margin posted for commodity contracts not subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsNotSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  |
Additional margin posted for commodity contracts subject to rate recovery | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | 0 sre_AdditionalMarginPostedForCommodityContractsSubjectToRateRecovery / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Total | $ 0 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  | $ 0 us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
[1] | Included in Current Assets: Other for SoCalGas.
[2] | Includes Otay Mesa VIE. All of SDG&E’s amounts relate to Otay Mesa VIE.
[3] | Normal purchase contracts previously measured at fair value are excluded.
[4] | Included in Current Liabilities: Other for SoCalGas.

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- Definition Additional margin posted for commodity contracts subject to rate recovery. + References No definition available. + Details
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- Definition Associated cash collateral commodity contracts not subject to rate recovery. + References No definition available. + Details
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- Definition Derivative commodity contracts not subject to rate recovery. + References No definition available. + Details
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- Definition Derivative commodity contracts not subject to rate recovery, nondesignated. + References No definition available. + Details
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- Definition Derivative commodity contracts subject to rate recovery, nondesignated. + References No definition available. + Details
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- Definition Associated cash collateral commodity contracts subject to rate recovery. + References No definition available. + Details
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- Definition Aggregate net fair value of all derivative instruments designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 + Details
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