v2.4.1.9

RECENT INVESTMENT ACTIVITY 2 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 13, 2014	Apr. 09, 2015
Business Acquisition [Line Items]
Liabilities Assumed	$ (2)us-gaap_LiabilitiesAssumed1	$ 0us-gaap_LiabilitiesAssumed1
Copper Mountain Solar 3 [Member]
Business Acquisition [Line Items]
Equity Method Investment Ownership Percentage			50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = sre_CopperMountainSolar3Member
Deconsolidation Gain Or Loss Amount After Tax			16sre_DeconsolidationGainOrLossAmountAfterTax / us-gaap_BusinessAcquisitionAxis = sre_CopperMountainSolar3Member
Proceeds from sale, net of cash sold			66sre_ProceedsFromSaleOfAssetsAndInvestments / us-gaap_BusinessAcquisitionAxis = sre_CopperMountainSolar3Member
Mesquite Power [Member]
Business Acquisition [Line Items]
Deconsolidation Gain Or Loss Amount After Tax				34sre_DeconsolidationGainOrLossAmountAfterTax / us-gaap_BusinessAcquisitionAxis = sre_MesquitePowerMember
Proceeds from sale, net of cash sold				345sre_ProceedsFromSaleOfAssetsAndInvestments / us-gaap_BusinessAcquisitionAxis = sre_MesquitePowerMember
Deconsolidation Gain Or Loss Amount				58us-gaap_DeconsolidationGainOrLossAmount / us-gaap_BusinessAcquisitionAxis = sre_MesquitePowerMember
Black Oak Getty Wind [Member]
Business Acquisition [Line Items]
Cash consideration (fair value of total consideration)	2us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = sre_BlackOakGettyWindMember
Equity Method Investment Ownership Percentage			100.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = sre_BlackOakGettyWindMember
Contingent payments to acquire a business	6sre_ContingentPaymentsToAcquireBusiness / us-gaap_BusinessAcquisitionAxis = sre_BlackOakGettyWindMember
Total business acquisition costs	$ 8sre_TotalBusinessAcquisitionCosts / us-gaap_BusinessAcquisitionAxis = sre_BlackOakGettyWindMember

X

- Definition

Contingent payments to acquire a business during the period

+ References

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- Definition

Deconsolidation gain or Loss amount, after tax.

+ References

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- Definition

The cash inflow from the sale of assets and investments.

+ References

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- Definition

Total business acquisition costs

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- Definition

The amount of the gain (loss) recognized by the parent and included in its attributable portion of net income for the period due to deconsolidation of a subsidiary or derecognition of a group of assets. The gain (loss) recognized and included in the net income attributable to the parent for the period is generally computed as the difference between: (a) the aggregate of: (1) the fair value of any consideration received; (2) the fair value of any retained noncontrolling investment in the former subsidiary at the date the subsidiary was deconsolidated; and (3) the carrying amount of any noncontrolling interest in the former subsidiary (including any accumulated other comprehensive income attributable to the noncontrolling interest) at the date the subsidiary was deconsolidated and (b) the carrying amount of the former subsidiary's assets and liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 1B

-Subparagraph (a)

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

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-SubTopic 10

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



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