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(WYPSC) (Details 7) - Tax Cuts and Jobs Act [Member] - Electric Rate Proceeding [Member] - WYPSC [Member] $ 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%)

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- Definition

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.

+ References

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- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

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- Definition

Percentage of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

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- Details

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- Details

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