XML 157 R84.htm IDEA: XBRL DOCUMENT v2.4.1.9
DEBT AND CREDIT FACILITIES 2 (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Commercial paper classified as long-term debt $ 0us-gaap_CommercialPaperNoncurrent $ 200,000,000us-gaap_CommercialPaperNoncurrent
Capital Lease Obligations 310,000,000us-gaap_CapitalLeaseObligations 195,000,000us-gaap_CapitalLeaseObligations
Current portion of long-term debt (469,000,000)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent (1,147,000,000)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
Debt Instrument, Unamortized Discount (21,000,000)us-gaap_DebtInstrumentUnamortizedDiscount (17,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
Long-term debt 12,167,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations 11,253,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 3,912,000,000us-gaap_DebtInstrumentCarryingAmount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 3,912,000,000us-gaap_DebtInstrumentCarryingAmount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Long Term Debt And Capital Lease Obligations, Including Current Portion 4,695,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 4,565,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Current portion of long-term debt (365,000,000)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 (29,000,000)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Unamortized Discount (11,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 (11,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Long-term debt 4,319,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 4,525,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 1,900,000,000us-gaap_DebtInstrumentCarryingAmount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 1,400,000,000us-gaap_DebtInstrumentCarryingAmount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Capital Lease Obligations 1,000,000us-gaap_CapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 2,000,000us-gaap_CapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Long Term Debt And Capital Lease Obligations, Including Current Portion 1,914,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 1,415,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Current portion of long-term debt 0us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 (252,000,000)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Unamortized Discount (8,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 (4,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Long-term debt 1,906,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 1,159,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Other Sempra Energy [Member]    
Debt Instrument [Line Items]    
Long Term Debt And Capital Lease Obligations, Including Current Portion 6,048,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember		 6,437,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember
Current portion of long-term debt (104,000,000)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember		 (866,000,000)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember
Debt Instrument, Unamortized Discount (9,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember		 (9,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember
Debt Instrument Unamortized Premium 7,000,000us-gaap_DebtInstrumentUnamortizedPremium
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember		 7,000,000us-gaap_DebtInstrumentUnamortizedPremium
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember
Long-term debt 5,942,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember		 5,569,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraEnergyMember
Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Build to suit lease 75,000,000sre_BuildToSuitLease
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 [1] 14,000,000sre_BuildToSuitLease
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 [1]
First Mortgage Bonds, Due March 2014 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
First Mortgage Bonds, Due November 2015 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2015Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2015Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 5.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2015Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due April 2018 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueApril2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueApril2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 5.45%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueApril2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
First Mortgage Bonds, Due July 2018 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 161,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJuly2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2] 161,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJuly2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 1.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJuly2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
First Mortgage Bonds, Due August 2021 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueAugust2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueAugust2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueAugust2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due September 2021 [Member] | Debt Instrument, Mobile Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 20,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentMobileGasMember		 20,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentMobileGasMember
Debt Instrument, Interest Rate, Stated Percentage 4.14%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentMobileGasMember		  
First Mortgage Bonds, Due September 2023 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 450,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 450,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 3.60%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due September 2024 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 3.15%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
First Mortgage Bonds, Due June 2026 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJune2026Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJune2026Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJune2026Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due December 2027 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 150,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueDecember2027Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2] 150,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueDecember2027Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueDecember2027Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueDecember2027Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
First Mortgage Bonds, Due September 2031 [Member] | Debt Instrument, Mobile Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 42,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2031Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentMobileGasMember		 42,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2031Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentMobileGasMember
Debt Instrument, Interest Rate, Stated Percentage 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2031Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentMobileGasMember		  
First Mortgage Bonds, Due January And February 2034 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 176,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJanuaryAndFebruary2034Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2] 176,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJanuaryAndFebruary2034Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 5.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJanuaryAndFebruary2034Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
First Mortgage Bonds, Due May 2035 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2035Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2035Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 5.35%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2035Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due November 2035 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2035Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2035Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2035Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
First Mortgage Bonds, Due September 2037 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2037Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2037Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 6.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2037Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due May 2039 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 75,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2] 75,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 4.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
First Mortgage Bonds, Due June 2039 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJune2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJune2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueJune2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due May 2040 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 5.35%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMay2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due August 2040 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueAugust2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueAugust2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueAugust2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due November 2040 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 5.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2040Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
First Mortgage Bonds, Due November 2041 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2041Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2041Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 3.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueNovember2041Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due April 2042 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueApril2042Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueApril2042Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 4.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueApril2042Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
First Mortgage Bonds, Due September 2042 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2042Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2042Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 3.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueSeptember2042Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
First Mortgage Bonds, Due March 2044 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMarch2044Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMarch2044Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 4.45%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_FirstMortgageBondsDueMarch2044Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
Other Long-term Debt [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long Term Debt And Capital Lease Obligations, Including Current Portion 783,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 653,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Other Long-term Debt [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long Term Debt And Capital Lease Obligations, Including Current Portion 14,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 15,000,000sre_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentPortion
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Commercial Paper [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 100,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_CommercialPaperMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_CommercialPaperMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Commercial Paper [Member] | Debt Instrument, Sempra Global [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_CommercialPaperMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraGlobalMember		 200,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_CommercialPaperMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraGlobalMember
Debt Instrument, Interest Rate at Period End   0.35%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_CommercialPaperMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraGlobalMember
Other Long-term Debt, Due June 2014 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 15,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Debt Instrument, Interest Rate, Stated Percentage 5.90%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		  
Other Long-term Debt, Due May 2016 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 8,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMay2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 [2] 8,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMay2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMay2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 [2]  
Other Long-term Debt, Due June 2016 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Due June 2018 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 6.15%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Due February 2019 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2019Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2019Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 9.80%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2019Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Due July 2021 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 39,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJuly2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2] 39,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJuly2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 5.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJuly2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
Other Long-term Debt, Due December 2021 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 60,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2] 60,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2021Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
Other Long-term Debt, Due March 2023 [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 25,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMarch2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2] 25,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMarch2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 4.90%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMarch2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 [2]  
Other Long-term Debt, Due July 2024 [Member] | Debt Instrument, Other Sempra Natural Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 77,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJuly2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2] 77,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJuly2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJuly2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]  
Other Long-term Debt, Due January 2028 [Member] | Debt Instrument, So Cal Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 5,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJanuary2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		 5,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJanuary2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember
Debt Instrument, Interest Rate, Stated Percentage 5.67%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJanuary2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSoCalGasMember		  
Other Long-term Debt, Due October 2039 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2039Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Industrial Development Bonds, Due August 2037 [Member] | Debt Instrument, Other Sempra Natural Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 55,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_IndustrialDevelopmentBondsDueAugust2037Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2] 55,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_IndustrialDevelopmentBondsDueAugust2037Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]
Debt Instrument, Interest Rate at Period End 0.05%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sre_IndustrialDevelopmentBondsDueAugust2037Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]  
Capital Lease Obligations, Purchased Power Agreements [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Capital Lease Obligations 233,000,000us-gaap_CapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= sre_CapitalLeaseObligationsPurchasedPowerAgreementsMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 176,000,000us-gaap_CapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= sre_CapitalLeaseObligationsPurchasedPowerAgreementsMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Capital Lease Obligations, Other [Member] | Debt Instrument, S D G E [Member]    
Debt Instrument [Line Items]    
Capital Lease Obligations 1,000,000us-gaap_CapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= sre_CapitalLeaseObligationsOtherMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember		 3,000,000us-gaap_CapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= sre_CapitalLeaseObligationsOtherMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSDGEMember
Market Value Adjustment For Interest Rate Swap [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_MarketValueAdjustmentForInterestRateSwapMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 12,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_MarketValueAdjustmentForInterestRateSwapMember
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Other Long-term Debt, Due March 2014 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 2.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Variable Rate Notes Due March 2014 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtVariableRateNotesDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtVariableRateNotesDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate at Period End 1.01%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtVariableRateNotesDueMarch2014Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Due October 2030 [Member] | Debt Instrument, Chilquinta Energia [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 192,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2030Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentChilquintaEnergiaMember		 [2] 209,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2030Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentChilquintaEnergiaMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 4.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2030Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentChilquintaEnergiaMember		 [2]  
Other Long-term Debt, Due February 2018 [Member] | Debt Instrument, Sempra Mexico [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 88,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		 100,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember
Debt Instrument, Interest Rate, Stated Percentage 2.66%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		  
Other Long-term Debt, Due February 2023 [Member] | Debt Instrument, Sempra Mexico [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 265,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		 298,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember
Debt Instrument, Interest Rate, Stated Percentage 6.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		  
Debt Instrument, Interest Rate at Period End 4.12%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueFebruary2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		  
Other Long-term Debt, Due December 2023 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 4.05%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2023Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Due June 2024 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 3.55%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueJune2024Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Due December 2018 [Member] | Debt Instrument, Other Sempra Natural Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 5,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2] 5,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage 3.10%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueDecember2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]  
Other Long Term Debt, Variable Rate Notes Due June 2016 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate at Period End 4.44%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtVariableRateNotesDueJune2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Debt Instrument, Amount At Variable Rates After Fixed To Floating Swap Effective January 2011 300,000,000sre_DebtInstrumentAmountAtVariableRatesAfterFixedToFloatingSwapEffectiveJanuary2011
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtVariableRateNotesDueJune2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Otay Mesa Energy Center Loan Payable Currently Through April 2019 [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 325,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtayMesaEnergyCenterLoanPayableCurrentlyThroughApril2019Member		 335,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtayMesaEnergyCenterLoanPayableCurrentlyThroughApril2019Member
Debt Instrument, Interest Rate, Stated Percentage 5.2925%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtayMesaEnergyCenterLoanPayableCurrentlyThroughApril2019Member		  
Other Long-term Debt, Currently Through October 2016 [Member] | Debt Instrument, Other Sempra Natural Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 19,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughOctober2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2] 18,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughOctober2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum 2.87%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughOctober2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]  
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum 3.51%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughOctober2016Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 [2]  
Other Long Term Debt, Payable Currently Through May 2022 [Member] | Debt Instrument, Luz Del Sur [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 10,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughMay2022Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughMay2022Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum 3.77%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughMay2022Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		  
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum 4.59%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughMay2022Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		  
Other LongTerm Debt, Variable Rate Loan Payable Currently Through December 2028 [Member] | Debt Instrument, Sempra Renewables [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 97,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongtermDebtVariableRateLoanPayableCurrentlyThroughDecember2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraRenewablesMember		 [2] 104,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongtermDebtVariableRateLoanPayableCurrentlyThroughDecember2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraRenewablesMember		 [2]
Debt Instrument, Interest Rate at Period End 2.74%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongtermDebtVariableRateLoanPayableCurrentlyThroughDecember2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraRenewablesMember		 [2]  
Other LongTerm Debt, Fixed Rate Loan Payable Currently Through December 2028 [Member] | Debt Instrument, Sempra Renewables [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 4.54%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongtermDebtFixedRateLoanPayableCurrentlyThroughDecember2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraRenewablesMember		 [2]  
Debt Instrument, Amount At Fixed Rates After Floating to Fixed Swap 74,000,000sre_DebtInstrumentAmountAtFixedRatesAfterFloatingToFixedSwap
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongtermDebtFixedRateLoanPayableCurrentlyThroughDecember2028Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraRenewablesMember		 [2]  
Other Long Term Debt, Payable Currently Through December 2017 [Member] | Debt Instrument, Other Sempra Natural Gas [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 16,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughDecember2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		 21,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughDecember2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember
Debt Instrument, Interest Rate, Stated Percentage 8.45%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughDecember2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentOtherSempraNaturalGasMember		  
Other Long Term Debt Due April 2017 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 600,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueApril2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 600,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueApril2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 2.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueApril2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long Term Debt, Due October 2022 [Member] | Debt Instrument, Parent [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2022Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2022Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember
Debt Instrument, Interest Rate, Stated Percentage 2.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtDueOctober2022Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentParentMember		  
Other Long-term Debt, Currently Through December 2018 [Member] | Debt Instrument, Luz Del Sur [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 91,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughDecember2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		 70,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughDecember2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum 5.05%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughDecember2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		  
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum 6.41%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtCurrentlyThroughDecember2018Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		  
Other Long Term Debt, Payable Currently Through September 2029 [Member] | Debt Instrument, Luz Del Sur [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 345,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughSeptember2029Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		 292,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughSeptember2029Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughSeptember2029Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		  
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum 7.41%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_DebtInstrumentAxis
= sre_OtherLongTermDebtPayableCurrentlyThroughSeptember2029Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentLuzDelSurMember		  
Other Long Term Debt Variable Rate Loan Payable Currently Through August 2017 [Member] | Debt Instrument, Sempra Mexico [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross $ 51,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_Otherlongtermdebtvariablerateloanpayablecurrentlythroughaugust2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		 [2],[3] $ 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= sre_Otherlongtermdebtvariablerateloanpayablecurrentlythroughaugust2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		 [2],[3]
Debt Instrument, Interest Rate at Period End 1.28%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sre_Otherlongtermdebtvariablerateloanpayablecurrentlythroughaugust2017Member
/ sre_DebtInstrumentBorrowerAxis
= sre_DebtInstrumentSempraMexicoMember		 [2],[3]  
[1]
We discuss this lease in Note 15.
[2]
Callable long-term debt not subject to make-whole provisions.
[3]
Classified as current portion of long-term debt.