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Regulatory Matters: Rate Review (Details) - Rate Review Filed with the Regulatory Agency - Arkansas Public Service Commission - Black Hills Energy, Arkansas $ in Thousands	Dec. 10, 2021 USD ($) mi
Public Utilities, General Disclosures [Line Items]
Public Utilities - Length of Natural Gas Pipeline to Receive Infrastructure Investments | mi	7,200
Public Utilities, Requested Rate Increase (Decrease), Amount | $	$ 22,000
Public Utilities, Requested Equity Capital Structure, Percentage	50.90%
Public Utilities, Requested Debt Capital Structure, Percentage	49.10%
Public Utilities, Requested Return on Equity, Percentage	10.20%

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- Definition

Public Utilities - Length of Natural Gas Pipeline to Receive Infrastructure Investments

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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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- Definition

Percentage of public utility's requested debt to capital, including debt and equity.

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- Definition

Percentage of public utility's requested equity to capital, including debt and equity.

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

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Percentage of public utility's requested return on equity.

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