v2.4.1.9

OTHER FINANCIAL DATA - INVENTORY (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Total Inventory [Line Items]
Energy Related Inventory, Natural Gas in Storage	$ 111us-gaap_EnergyRelatedInventoryNaturalGasInStorage	$ 246us-gaap_EnergyRelatedInventoryNaturalGasInStorage
Energy Related Inventory, Liquefied Natural Gas	11sre_EnergyRelatedInventoryLiquefiedNaturalGas	14sre_EnergyRelatedInventoryLiquefiedNaturalGas
Energy Related Inventory, Materials And Supplies	133sre_EnergyRelatedInventoryMaterialsAndSupplies	136sre_EnergyRelatedInventoryMaterialsAndSupplies
Inventory, Total	255us-gaap_InventoryNet	396us-gaap_InventoryNet	[1]
S D G E Segment [Member]
Total Inventory [Line Items]
Energy Related Inventory, Natural Gas in Storage	6us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember	8us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember
Energy Related Inventory, Liquefied Natural Gas	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember
Energy Related Inventory, Materials And Supplies	63sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember	65sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember
Inventory, Total	69us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember	73us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SDGESegmentMember
So Cal Gas Segment [Member]
Total Inventory [Line Items]
Energy Related Inventory, Natural Gas in Storage	83us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember	155us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember
Energy Related Inventory, Liquefied Natural Gas	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember
Energy Related Inventory, Materials And Supplies	26sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember	26sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember
Inventory, Total	109us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember	181us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SoCalGasSegmentMember
Sempra South American Utilities Segment [Member]
Total Inventory [Line Items]
Energy Related Inventory, Natural Gas in Storage	0us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember	0us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember
Energy Related Inventory, Liquefied Natural Gas	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember
Energy Related Inventory, Materials And Supplies	32sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember	33sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember
Inventory, Total	32us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember	33us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraSouthAmericanUtilitiesSegmentMember
Sempra Mexico Segment [Member]
Total Inventory [Line Items]
Energy Related Inventory, Natural Gas in Storage	0us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember	0us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember
Energy Related Inventory, Liquefied Natural Gas	7sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember	9sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember
Energy Related Inventory, Materials And Supplies	9sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember	9sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember
Inventory, Total	16us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember	18us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraMexicoSegmentMember
Sempra Natural Gas Segment [Member]
Total Inventory [Line Items]
Energy Related Inventory, Natural Gas in Storage	22us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember	83us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember
Energy Related Inventory, Liquefied Natural Gas	4sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember	5sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember
Energy Related Inventory, Materials And Supplies	1sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember	1sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember
Inventory, Total	27us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember	89us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraNaturalGasSegmentMember
Sempra Renewables Segment [Member]
Total Inventory [Line Items]
Energy Related Inventory, Natural Gas in Storage	0us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember	0us-gaap_EnergyRelatedInventoryNaturalGasInStorage / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember
Energy Related Inventory, Liquefied Natural Gas	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember	0sre_EnergyRelatedInventoryLiquefiedNaturalGas / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember
Energy Related Inventory, Materials And Supplies	2sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember	2sre_EnergyRelatedInventoryMaterialsAndSupplies / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember
Inventory, Total	$ 2us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember	$ 2us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = sre_SempraRenewablesSegmentMember
[1] Derived from audited financial statements.

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- Definition

Energy related inventory, Liquefied Natural Gas.

+ References

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- Definition

Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

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-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

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