v2.4.1.9

GENERAL (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015
Seasonality [Line Items] |
Higher Earnings Due To Seasonality | $ 113 sre_Higherearningsduetoseasonality
Higher Utility Revenue Due to Seasonality | 163 sre_Higherutilityrevenueduetoseasonality
Southern California Gas Company [Member] |
Seasonality [Line Items] |
Higher Earnings Due To Seasonality | 113 sre_Higherearningsduetoseasonality / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember
Higher Utility Revenue Due to Seasonality | $ 163 sre_Higherutilityrevenueduetoseasonality / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember

X
- Definition Higher earnings due to seasonality + References No definition available. + Details
Name: | sre_Higherearningsduetoseasonality
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Higher Utility revenue due to Seasonality + References No definition available. + Details
Name: | sre_Higherutilityrevenueduetoseasonality
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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