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CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 2 (Details) - Southern California Gas Company [Member] - USD ($) $ in Thousands | Jun. 30, 2015 | Mar. 31, 2015
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Year 2014 [Member] |  |
Utility Incentive Awards [Line Items] |  |
Recognized Gas Cost Incentive Mechanism Award |  | $ 13,700
Year 2015 [Member] |  |
Utility Incentive Awards [Line Items] |  |
Requested Gas Cost Incentive Mechanism Award | $ 7,250 |

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- Definition Recognized Gas Cost Incentive Mechanism Award. + References No definition available. + Details
Name: | sre_RecognizedGasCostIncentiveMechanismAward
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Requested Gas Cost Incentive Mechanism Award. + References No definition available. + Details
Name: | sre_RequestedGasCostIncentiveMechanismAward
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | sre_UtilityIncentiveAwardsLineItems
Namespace Prefix: | sre_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=sre_SouthernCaliforniaGasCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | sre_ProgramYearAxis=sre_Year2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | sre_ProgramYearAxis=sre_Year2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |