v2.4.1.9

COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS 4 (Details) (Pio Pico [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Pio Pico [Member]
Capital Leases [Line Items]
CapitalLeasesFutureMinimumPaymentsDueCurrent	$ 0us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsDueInTwoYears	0us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsDueInThreeYears	38us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsDueInFourYears	65us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsDueInFiveYears	65us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsDueThereafter	1,460us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsDue	1,628us-gaap_CapitalLeasesFutureMinimumPaymentsDue / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsExecutoryCosts	(392)us-gaap_CapitalLeasesFutureMinimumPaymentsExecutoryCosts / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	(736)us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember
CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	$ 500us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments / sre_CapitalLeasesByNatureOfLeaseAxis = sre_PioPicoMember

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- Definition

Amount of minimum lease payments for capital leases.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

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- Definition

Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 30

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Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 30

-Section 50

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- Definition

Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 30

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- Definition

Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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-Publisher FASB

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- Definition

Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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-Publisher FASB

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Amount of minimum lease payments for capital leases due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

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-SubTopic 30

-Section 50

-Paragraph 1

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- Definition

Amounts to be paid by lessee to lessor for maintenance, insurance, and tax expenses related to the leased asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount necessary to reduce net minimum lease payments to present value for capital leases.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

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- Definition

Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

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

-Publisher FASB

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