Wyoming Public Service Commission (WYPSC) (Details) - Electric rate proceeding - WYPSC - Tax Cuts and Jobs Act $ in Millions	Mar. 30, 2018 USD ($)
Public Utilities, General Disclosures [Line Items]
Public utilities, requested rate increase (decrease), amount	$ (1.1)
Public utilities, requested rate increase (decrease), percentage	(4.20%)

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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