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Regulatory Matters: Gas Utilities Regulatory Activity (Details) $ in Millions	Jan. 26, 2023 USD ($) mi	Oct. 10, 2022 USD ($) Riders mi	Oct. 07, 2022 USD ($) mi	Dec. 30, 2021 USD ($) mi	Dec. 28, 2021 USD ($)	Jul. 06, 2021	Jun. 01, 2021 USD ($) mi	Sep. 11, 2020
Arkansas Public Service Commission (APSC) | Black Hills Energy - Arkansas Gas | Settlement agreement reached with APSC Staff and various intervenors
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount		$ 8.8
Public Utilities Number Of Former Riders Replaced With A New Comprehensive Safety And Integrity Rider | Riders		3
Public Utilities Amount of System Safety and Integrety Rider Moved to Base Rates		$ 10.0
Colorado Public Utilities Commission (CPUC) | Black Hills Energy - Colorado Gas | Rate Review Filed with the Regulatory Agency
Public Utilities, General Disclosures [Line Items]
Public Utilities - Length of Natural Gas Pipeline to Receive Infrastructure Investments | mi			600
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 12.3
Public Utilities, Approved Equity Capital Structure, Percentage			52.00%
Public Utilities, Approved Debt Capital Structure, Percentage			48.00%
Public Utilities, Requested Return on Equity, Percentage			12.30%
Public Utilities, Requested Term Extension of System Safety and Integrity Rider								5 years
Colorado Public Utilities Commission (CPUC) | Black Hills Energy - Colorado Gas | Settlement agreement reached with CPUC Staff and various intervenors, subject to the review and approval by an Administrative Law Judge and the CPUC.
Public Utilities, General Disclosures [Line Items]
Public Utilities - Length of Natural Gas Pipeline to Receive Infrastructure Investments | mi							7,000
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 6.5
Public Utilities, Amount of Requested System Safety and Integrity Rider be Moved to Base Rates			$ 7.7
Public Utilities, Approved Equity Capital Structure, Percentage							50.30%
Public Utilities, Approved Debt Capital Structure, Percentage							49.70%
Public Utilities, Approved Return on Equity, Percentage							9.20%
Colorado Public Utilities Commission (CPUC) | Black Hills Energy - Colorado Gas | Rate Review Approved by Regulatory Agency
Public Utilities, General Disclosures [Line Items]
Public Utilities, Term Extension of System Safety and Integrity Rider						3 years
Iowa Utilities Board (IUB) | Black Hills Energy - Iowa Gas | Settlement Reached with the Regulatory Agency
Public Utilities, General Disclosures [Line Items]
Public Utilities - Length of Natural Gas Pipeline to Receive Infrastructure Investments | mi							5,000
Public Utilities, Approved Equity Capital Structure, Percentage					50.00%
Public Utilities, Approved Debt Capital Structure, Percentage					50.00%
Public Utilities, Approved Return on Equity, Percentage					9.60%
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 3.7
Public Utilities Amount of System Safety and Integrety Rider Moved to Base Rates							$ 2.2
Kansas Corporation Commission (KCC) | Black Hills Energy, Kansas Gas | Global Settlement agreement with KCC Staff and various intervenors for a general rate increase and renewal of its safety and integrity rider.
Public Utilities, General Disclosures [Line Items]
Public Utilities - Length of Natural Gas Pipeline to Receive Infrastructure Investments | mi				4,600
Public Utilities Amount of System Safety and Integrety Rider Moved to Base Rates				$ 6.6
Public Utilities, Term Extension of System Safety and Integrity Rider				5 years
Arkansas Public Service Commission | Black Hills Energy - Arkansas Gas | Rate Review Filed with the Regulatory Agency
Public Utilities, General Disclosures [Line Items]
Public Utilities - Length of Natural Gas Pipeline to Receive Infrastructure Investments | mi		7,200
Arkansas Public Service Commission | Black Hills Energy - Arkansas Gas | Settlement agreement reached with APSC Staff and various intervenors
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Equity Capital Structure, Percentage		45.00%
Public Utilities, Approved Debt Capital Structure, Percentage		55.00%
Public Utilities, Requested Return on Equity, Percentage		9.60%
Subsequent Event | Wyoming Public Service Commission | Wyoming Electric | Rate Review Filed with the Regulatory Agency
Public Utilities, General Disclosures [Line Items]
Public Utilities - Length of Electric Distribution Lines to Receive Infrastructure Investments | mi	1,330
Public Utilities - Length of Electric Transmission Lines to Receive Infrastructure Investments | mi	59
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 8.7
Public Utilities, Approved Equity Capital Structure, Percentage	52.00%
Public Utilities, Approved Debt Capital Structure, Percentage	48.00%
Public Utilities, Requested Return on Equity, Percentage	9.75%

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