v2.4.1.9

OTHER FINANCIAL DATA - TRANSACTIONS WITH AFFILIATES 2 (Details) (USD $)
In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Transactions With Affiliates Disclosure [Line Items]

Due from affiliate, noncurrent

$ 200us-gaap_DueFromRelatedPartiesNoncurrent

^[1]

$ 226us-gaap_DueFromRelatedPartiesNoncurrent

^[1]

Joint venture with PEMEX [Member]

Transactions With Affiliates Disclosure [Line Items]

Interest rate on due from affiliate, noncurrent

4.67%us-gaap_RelatedPartyTransactionRate
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_JointVentureWithPemexMember

PEMEX Four year loan C [Member]

Transactions With Affiliates Disclosure [Line Items]

Due from affiliate, noncurrent

8us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexFourYearLoanCMember

^[1],[2]

8us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexFourYearLoanCMember

^[1],[2]

PEMEX Three year loan A [Member]

Transactions With Affiliates Disclosure [Line Items]

Due from affiliate, noncurrent

44us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexThreeYearLoanAMember

^[1],[2]

44us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexThreeYearLoanAMember

^[1],[2]

PEMEX Four year loan B [Member]

Transactions With Affiliates Disclosure [Line Items]

Due from affiliate, noncurrent

33us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexFourYearLoanBMember

^[1],[2]

33us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexFourYearLoanBMember

^[1],[2]

PEMEX Four year loan A [Member]

Transactions With Affiliates Disclosure [Line Items]

Due from affiliate, noncurrent

41us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexFourYearLoanAMember

^[1],[2]

40us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_PemexFourYearLoanAMember

^[1],[2]

ESJ joint venture [Member]

Transactions With Affiliates Disclosure [Line Items]

Due from affiliate, noncurrent

23us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_EsjJointVentureMember

^[1],[3]

22us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_EsjJointVentureMember

^[1],[3]

Interest rate on due from affiliate, noncurrent

6.55%us-gaap_RelatedPartyTransactionRate
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_EsjJointVentureMember

Eletrans [Member]

Transactions With Affiliates Disclosure [Line Items]

Due from affiliate, noncurrent

46us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_EletransMember

^[1],[4]

41us-gaap_DueFromRelatedPartiesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_EletransMember

^[1],[4]

Interest rate on due from affiliate, noncurrent

4.00%us-gaap_RelatedPartyTransactionRate
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_EletransMember

Affiliate Of Investee [Member]

Transactions With Affiliates Disclosure [Line Items]

Due From Joint Ventures Noncurrent

$ 5us-gaap_DueFromJointVenturesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_AffiliateOfInvesteeMember

^[1],[5]

$ 38us-gaap_DueFromJointVenturesNoncurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sre_AffiliateOfInvesteeMember

^[1],[5]

[1]	Amounts include principal balances plus accumulated interest outstanding.
[2]	U.S. dollar-denominated loan, at a variable interest rate based on a 30-day LIBOR plus 450 basis points (4.67 percent at March 31, 2015), to finance the Los Ramones Norte pipeline project.
[3]	U.S. dollar-denominated loan, at a variable interest rate based on a 30-day LIBOR plus 637.5 basis points (6.55 percent at March 31, 2015), to finance the first phase of the Energía Sierra Juárez wind project.
[4]	U.S. dollar-denominated loan, at a fixed interest rate with no stated maturity date, to provide project financing for the construction of transmission lines at Eletrans S.A., an affiliate of Chilquinta Energía.
[5]	Amounts represent accounts receivable from various Sempra Renewables and Sempra Mexico joint venture investments.

X

- Definition

Amounts due from an entity in which the reporting entity shares joint control with another party or group, due after 1 year (or 1 business cycle).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

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-Subparagraph 1

-Article 4



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.11)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864



Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant

X

- Definition

Aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due after one year (or one business cycle).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.11)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 11

-Article 5

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- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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X

- Details

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X

- Details

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X

- Details

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X

- Details

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