v3.6.0.2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($)
Statement of Cash Flows [Abstract] |
Offering costs | $ 40

X
- Definition Sale of Noncontrolling Interest, Offering Costs + References No definition available. + Details
Name: | sre_SaleofNoncontrollingInterestOfferingCosts
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration