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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 31, 2015
Schedule Of Recurring Fair Value Assets Liabilities [Abstract]  
Schedule Of Recurring Fair Value Measures
RECURRING FAIR VALUE MEASURES – SEMPRA ENERGY CONSOLIDATED
(Dollars in millions)
Fair value at December 31, 2015
Level 1Level 2Level 3Netting(1)Total
Assets:
Nuclear decommissioning trusts
Equity securities$619$―$―$―$619
Debt securities:
Debt securities issued by the U.S. Treasury and other
U.S. government corporations and agencies4744――91
Municipal bonds ―156――156
Other securities ―182――182
Total debt securities47382――429
Total nuclear decommissioning trusts(2)666382――1,048
Interest rate and foreign exchange instruments―5――5
Commodity contracts not subject to rate recovery2216―(4)34
Commodity contracts subject to rate recovery―17228101
Total$688$404$72$24$1,188
Liabilities:
Interest rate and foreign exchange instruments $―$171$―$―$171
Commodity contracts not subject to rate recovery53―(4)4
Commodity contracts subject to rate recovery―6853(54)67
Total$5$242$53$(58)$242
Fair value at December 31, 2014
Level 1Level 2Level 3Netting(1)Total
Assets:
Nuclear decommissioning trusts
Equity securities$655$―$―$―$655
Debt securities:
Debt securities issued by the U.S. Treasury and other
U.S. government corporations and agencies6247――109
Municipal bonds―129――129
Other securities―207――207
Total debt securities62383――445
Total nuclear decommissioning trusts(2)717383――1,100
Interest rate and foreign exchange instruments―48――48
Commodity contracts not subject to rate recovery2816―(11)33
Commodity contracts subject to rate recovery―110714122
Total$745$448$107$3$1,303
Liabilities:
Interest rate and foreign exchange instruments$―$155$―$―$155
Commodity contracts not subject to rate recovery39―(4)8
Commodity contracts subject to rate recovery―52―(36)16
Total$3$216$―$(40)$179
(1)Includes the effect of the contractual ability to settle contracts under master netting agreements and with cash collateral, as well as cash collateral not offset.
(2)Excludes cash balances and cash equivalents.

RECURRING FAIR VALUE MEASURES – SDG&E
(Dollars in millions)
Fair value at December 31, 2015
Level 1Level 2Level 3Netting(1)Total
Assets:
Nuclear decommissioning trusts
Equity securities$619$―$―$―$619
Debt securities:
Debt securities issued by the U.S. Treasury and other
U.S. government corporations and agencies4744――91
Municipal bonds ―156――156
Other securities ―182――182
Total debt securities47382――429
Total nuclear decommissioning trusts(2)666382――1,048
Commodity contracts not subject to rate recovery―――11
Commodity contracts subject to rate recovery――722799
Total$666$382$72$28$1,148
Liabilities:
Interest rate instruments$―$37$―$―$37
Commodity contracts not subject to rate recovery1――(1)―
Commodity contracts subject to rate recovery―6753(54)66
Total$1$104$53$(55)$103
Fair value at December 31, 2014
Level 1Level 2Level 3Netting(1)Total
Assets:
Nuclear decommissioning trusts
Equity securities$655$―$―$―$655
Debt securities:
Debt securities issued by the U.S. Treasury and other
U.S. government corporations and agencies6247――109
Municipal bonds ―129――129
Other securities ―207――207
Total debt securities62383――445
Total nuclear decommissioning trusts(2)717383――1,100
Commodity contracts subject to rate recovery――10712119
Total$717$383$107$12$1,219
Liabilities:
Interest rate instruments$―$47$―$―$47
Commodity contracts not subject to rate recovery1――(1)―
Commodity contracts subject to rate recovery―51―(36)15
Total$1$98$―$(37)$62
(1)Includes the effect of the contractual ability to settle contracts under master netting agreements and with cash collateral, as well as cash collateral not offset.
(2)Excludes cash balances and cash equivalents.

RECURRING FAIR VALUE MEASURES – SOCALGAS
(Dollars in millions)
Fair value at December 31, 2015
Level 1Level 2Level 3Netting(1)Total
Assets:
Commodity contracts subject to rate recovery$―$1$―$1$2
Total$―$1$―$1$2
Liabilities:
Commodity contracts not subject to rate recovery$1$―$―$(1)$―
Commodity contracts subject to rate recovery―1――1
Total$1$1$―$(1)$1
Fair value at December 31, 2014
Level 1Level 2Level 3Netting(1)Total
Assets:
Commodity contracts subject to rate recovery$―$1$―$2$3
Total$―$1$―$2$3
Liabilities:
Commodity contracts not subject to rate recovery$2$―$―$(2)$―
Commodity contracts subject to rate recovery―1――1
Total$2$1$―$(2)$1
(1)Includes the effect of the contractual ability to settle contracts under master netting agreements and with cash collateral, as well as cash collateral not offset.
Schedule Of Recurring Fair Value Assets Liabilities Unobservable Input Reconciliation [Abstract]  
Schedule Of Recurring Fair Value Measures Level 3 Rollforward
LEVEL 3 RECONCILIATIONS
(Dollars in millions)
Years ended December 31,
201520142013
Balance at January 1$107$99$61
Realized and unrealized (losses) gains(134)1511
Allocated transmission instruments121951
Settlements34(26)(24)
Balance at December 31$19$107$99
Change in unrealized (losses) gains relating to
instruments still held at December 31$(27)$8$11
Schedule Of Fair Value Of Financial Instruments [Abstract]  
Schedule Of Fair Value of Financial Instruments
FAIR VALUE OF FINANCIAL INSTRUMENTS
(Dollars in millions)
December 31, 2015
CarryingFair Value
amountLevel 1Level 2Level 3Total
Sempra Energy Consolidated:
Noncurrent due from unconsolidated affiliates(1)$175$―$97$69$166
Total long-term debt(2)(3)13,761―13,98564814,633
Preferred stock of subsidiary20―23―23
SDG&E:
Total long-term debt(3)(4)$4,304$―$4,355$315$4,670
SoCalGas:
Total long-term debt(5)$2,513$―$2,621$―$2,621
Preferred stock22―25―25
December 31, 2014
CarryingFair Value
amountLevel 1Level 2Level 3Total
Sempra Energy Consolidated:
Noncurrent due from unconsolidated affiliates(1)$184$―$132$38$170
Total long-term debt(2)(3)12,347―12,78291713,699
Preferred stock of subsidiary20―23―23
SDG&E:
Total long-term debt(3)(4)$4,461$―$4,563$425$4,988
SoCalGas:
Total long-term debt(5)$1,913$―$2,124$―$2,124
Preferred stock22―25―25
(1)Excluding accumulated interest outstanding of $11 million and $4 million at December 31, 2015 and 2014, respectively.
(2)Before reductions for unamortized discount (net of premium) and debt issuance costs of $107 million and $102 million at December 31, 2015 and 2014, respectively, and excluding build-to-suit and capital leases of $387 million and $310 million at December 31, 2015 and 2014, respectively. We discuss our long-term debt in Note 5.
(3)Level 3 instruments include $315 million and $325 million at December 31, 2015 and 2014, respectively, related to Otay Mesa VIE.
(4)Before reductions for unamortized discount and debt issuance costs of $43 million and $47 million at December 31, 2015 and 2014, respectively, and excluding capital leases of $244 million and $234 million at December 31, 2015 and 2014, respectively.
(5)Before reductions for unamortized discount and debt issuance costs of $24 million and $23 million at December 31, 2015 and 2014, respectively, and excluding capital leases of $1 million at both December 31, 2015 and 2014.
Schedule Of Cash Collateral Not Offset With Derivative Instruments [Abstract]  
Schedule Of Fair Value of Cash Collateral Receivables Not Offset on the Consolidated Balance Sheets
December 31,
(Dollars in millions)20152014
Sempra Energy Consolidated$30$14
SDG&E2812
SoCalGas12
Schedule Of Non Recurring Fair Value Measures [Abstract]  
Schedule Of Non Recurring Fair Value Measures
NON-RECURRING FAIR VALUE MEASURES – SEMPRA ENERGY CONSOLIDATED
(Dollars in millions)
EstimatedFair% ofInputs used to
fairvalueFair valuedevelopRange of
valueValuation techniquehierarchymeasurementmeasurementinputs
Investment in
Energía Sierra Juárez$26(1)Market approachLevel 2100%Equity sale offer price100%
(1)At measurement date of July 16, 2014. At December 31, 2015, our investment in Energía Sierra Juárez had a carrying value of $30 million, reflecting subsequent equity method activity to record distributions and earnings.