v3.4.0.3

DEBT AND CREDIT FACILITIES - LONG TERM DEBT (Details) - Other Long Term Debt, Variable Rate Due 2027 [Member] - San Diego Gas and Electric Company [Member] $ in Millions	Mar. 31, 2016 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Planned Early Redemption Of Long Term Debt Instruments	$ 105

X

- Definition

Planned Early Redemption Of Long Term Debt Instruments

+ References

No definition available.

+ Details

Name:	sre_Plannedearlyredemptionoflongtermdebtinstruments
Namespace Prefix:	sre_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sre_OtherLongTermDebtVariableRateDue2027Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=sre_SanDiegoGasAndElectricCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: