SDPUC (Details 5) - Tax Cuts and Jobs Act [Member] - SDPUC - USD ($)	Dec. 28, 2018	Oct. 23, 2018
Electric rate proceeding
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ (100,000)	$ (600,000)
Natural gas rate proceeding [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ (300,000)	$ (1,400,000)

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.

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