v2.4.1.9

OTHER FINANCIAL DATA - RABBI TRUST (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Rabbi Trust Disclosure [Abstract] |  |  |
Rabbi Trust | $ 476 us-gaap_AssetsHeldInTrustNoncurrent | $ 512 us-gaap_AssetsHeldInTrustNoncurrent | [1]
[1] | Derived from audited financial statements.

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- Details
Name: | sre_RabbiTrustDisclosureAbstract
Namespace Prefix: | sre_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited. + 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.(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_AssetsHeldInTrustNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant