100000 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 100010 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 100020 - Statement - Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 100030 - Statement - Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 100040 - Statement - Consolidated Statements of Comprehensive Income (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 100050 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 100060 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100070 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 100080 - Statement - Consolidated Statements of Equity link:presentationLink link:calculationLink link:definitionLink 100090 - Statement - Consolidated Statements of Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100100 - Disclosure - Business Description And Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 100110 - Disclosure - Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 100120 - Disclosure - Commitment, Contingencies And Guarantees link:presentationLink link:calculationLink link:definitionLink 100130 - Disclosure - Revenue link:presentationLink link:calculationLink link:definitionLink 100140 - Disclosure - Property, Plant And Equipment link:presentationLink link:calculationLink link:definitionLink 100150 - Disclosure - Jointly Owned Facilities link:presentationLink link:calculationLink link:definitionLink 100160 - Disclosure - Asset Retirement Obligations: link:presentationLink link:calculationLink link:definitionLink 100170 - Disclosure - Financing link:presentationLink link:calculationLink link:definitionLink 100180 - Disclosure - Risk Management And Derivatives link:presentationLink link:calculationLink link:definitionLink 100190 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 100200 - Disclosure - Other Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 100210 - Disclosure - Variable Interest Entity link:presentationLink link:calculationLink link:definitionLink 100220 - Disclosure - Employee Benefits Plans link:presentationLink link:calculationLink link:definitionLink 100230 - Disclosure - Share-based Compensation Plans link:presentationLink link:calculationLink link:definitionLink 100240 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 100250 - Disclosure - Business Segment Information link:presentationLink link:calculationLink link:definitionLink 100260 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 100270 - Disclosure - Business Description And Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 100280 - Disclosure - Business Description And Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 100290 - Disclosure - Regulatory Matters (Tables) link:presentationLink link:calculationLink link:definitionLink 100300 - Disclosure - Commitment, Contingencies And Guarantees (Tables) link:presentationLink link:calculationLink link:definitionLink 100310 - Disclosure - Revenue (Tables) link:presentationLink link:calculationLink link:definitionLink 100320 - Disclosure - Property, Plant and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 100330 - Disclosure - Jointly Owned Facilities (Tables) link:presentationLink link:calculationLink link:definitionLink 100340 - Disclosure - Asset Retirement Obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 100350 - Disclosure - Financing (Tables) link:presentationLink link:calculationLink link:definitionLink 100360 - Disclosure - Risk Management And Derivatives (Tables) link:presentationLink link:calculationLink link:definitionLink 100370 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 100380 - Disclosure - Other Comprehensive Income (Tables) link:presentationLink link:calculationLink link:definitionLink 100390 - Disclosure - Variable Interest Entity (Tables) link:presentationLink link:calculationLink link:definitionLink 100400 - Disclosure - Employee Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 100410 - Disclosure - Share-based Compensation Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 100420 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 100430 - Disclosure - Business Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 100440 - Disclosure - Business Description And Significant Accounting Policies: Accounts Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 100450 - Disclosure - Business Description And Significant Accounting Policies: Allowance for Doubtful Accounts (Details) link:presentationLink link:calculationLink link:definitionLink 100460 - Disclosure - Business Description And Significant Accounting Policies: Materials, Supplies and Fuel (Details) link:presentationLink link:calculationLink link:definitionLink 100470 - Disclosure - Business Description And Significant Accounting Policies: Property, Plant and Equipment (AFUDC) (Details) link:presentationLink link:calculationLink link:definitionLink 100480 - Disclosure - Business Description And Significant Accounting Policies: Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 100490 - Disclosure - Business Description And Significant Accounting Policies: Schedule of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 100500 - Disclosure - Business Description And Significant Accounting Policies: Accrued Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 100510 - Disclosure - Business Description And Significant Accounting Policies: Earnings per Share (Details) link:presentationLink link:calculationLink link:definitionLink 100520 - Disclosure - Business Description And Significant Accounting Policies: Anti-dilutive shares (Details) link:presentationLink link:calculationLink link:definitionLink 100530 - Disclosure - Regulatory Matters: Regulatory Matters (Details) link:presentationLink link:calculationLink link:definitionLink 100540 - Disclosure - Regulatory Matters: Winter Storm Uri (Details) link:presentationLink link:calculationLink link:definitionLink 100550 - Disclosure - Regulatory Matters: Tax Cut and Jobs Act (Details) link:presentationLink link:calculationLink link:definitionLink 100560 - Disclosure - Regulatory Matters: Gas Utilities Regulatory Activity (Details) link:presentationLink link:calculationLink link:definitionLink 100570 - Disclosure - Regulatory Matters: Electric Utilities Regulatory Activity (Details) link:presentationLink link:calculationLink link:definitionLink 100580 - Disclosure - Commitment, Contingencies And Guarantees: Power Purchase Agreement - Related Party (Details) link:presentationLink link:calculationLink link:definitionLink 100590 - Disclosure - Commitment, Contingencies And Guarantees: Unconditional Purchase Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 100600 - Disclosure - Commitment, Contingencies And Guarantees: Lease Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 100610 - Disclosure - Commitment, Contingencies And Guarantees: Reclamation Liability (Details) link:presentationLink link:calculationLink link:definitionLink 100620 - Disclosure - Commitment, Contingencies And Guarantees: Manufactured Gas Processing (Details) link:presentationLink link:calculationLink link:definitionLink 100630 - Disclosure - Commitments, Contingencies and Guarantees: GT Resources, LLC v Black Hills Corp (Details) link:presentationLink link:calculationLink link:definitionLink 100640 - Disclosure - Commitment, Contingencies And Guarantees: Guarantees (Details) link:presentationLink link:calculationLink link:definitionLink 100650 - Disclosure - Revenue: Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 100660 - Disclosure - Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 100670 - Disclosure - Jointly Owned Facilities (Details) link:presentationLink link:calculationLink link:definitionLink 100680 - Disclosure - Asset Retirement Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 100690 - Disclosure - Financing: Short-Term Debt: (Details) link:presentationLink link:calculationLink link:definitionLink 100700 - Disclosure - Financing: Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 100710 - Disclosure - Financing: Long-Term Debt: Aggregate Maturities of Long Term Debt and Associated Interest Payments (Details) link:presentationLink link:calculationLink link:definitionLink 100720 - Disclosure - Financing: Long-Term Debt: Debt Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 100730 - Disclosure - Financing: Long-Term Debt: Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 100740 - Disclosure - Financing: Debt Covenants (Details) link:presentationLink link:calculationLink link:definitionLink 100750 - Disclosure - Financing: Dividend Restrictions (Details) link:presentationLink link:calculationLink link:definitionLink 100760 - Disclosure - Financing: At-the-Market Equity Offering Program (Details) link:presentationLink link:calculationLink link:definitionLink 100770 - Disclosure - Financing: Summary of ATM Activity (Details) link:presentationLink link:calculationLink link:definitionLink 100780 - Disclosure - Financing: Summary of ATM Activity (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 100790 - Disclosure - Financing: Equity Issuance (Details) link:presentationLink link:calculationLink link:definitionLink 100800 - Disclosure - Financing: Shareholder Dividend Reinvestment and Stock Purchase Plan (Details) link:presentationLink link:calculationLink link:definitionLink 100810 - Disclosure - Financing: Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 100820 - Disclosure - Risk Management and Derivatives: Utilities (Details) link:presentationLink link:calculationLink link:definitionLink 100830 - Disclosure - Risk Management and Derivatives: Derivatives by Balance Sheet Classification (Details) link:presentationLink link:calculationLink link:definitionLink 100840 - Disclosure - Risk Management and Derivatives: Cash Flow Hedges (Details) link:presentationLink link:calculationLink link:definitionLink 100850 - Disclosure - Risk Management and Derivatives: Derivatives Not Designated as Hedge Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 100860 - Disclosure - Fair Value Measurements: Schedule of Fair Values (Details) link:presentationLink link:calculationLink link:definitionLink 100870 - Disclosure - Fair Value Measurements: Other Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 100880 - Disclosure - Other Comprehensive Income: Reclassification Out of Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 100890 - Disclosure - Other Comprehensive Income: Accumulated Other Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 100900 - Disclosure - Variable Interest Entity: (Details) link:presentationLink link:calculationLink link:definitionLink 100910 - Disclosure - Employee Benefit Plans: Defined Contribution Plans (Details) link:presentationLink link:calculationLink link:definitionLink 100920 - Disclosure - Employee Benefit Plans: Defined Benefit Pension Plan (Details) link:presentationLink link:calculationLink link:definitionLink 100930 - Disclosure - Employee Benefit Plans: Plan Contributions (Details) link:presentationLink link:calculationLink link:definitionLink 100940 - Disclosure - Employee Benefit Plans: Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 100950 - Disclosure - Employee Benefit Plans: Employee Benefit Plan Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 100960 - Disclosure - Employee Benefit Plans: Fair Value Employee Benefit Plan Assets (Details) link:presentationLink link:calculationLink link:definitionLink 100970 - Disclosure - Employee Benefit Plans: Amounts Recognized in the Consolidated Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink 100980 - Disclosure - Employee Benefit Plans: Accumulated Benefit Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 100990 - Disclosure - Employee Benefit Plans: Components of Net Periodic Expense (Details) link:presentationLink link:calculationLink link:definitionLink 101000 - Disclosure - Employee Benefit Plans: AOCI Amounts (After-Tax) (Details) link:presentationLink link:calculationLink link:definitionLink 101010 - Disclosure - Employee Benefit Plans: Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 101020 - Disclosure - Share-based Compensation Plans: Compensation Related Costs, Share Based Payments (Details) link:presentationLink link:calculationLink link:definitionLink 101030 - Disclosure - Share-based Compensation Plans: Restricted Stock (Details) link:presentationLink link:calculationLink link:definitionLink 101040 - Disclosure - Share Based Compensation Plans: Performance Share Plan (Details) link:presentationLink link:calculationLink link:definitionLink 101050 - Disclosure - Share-based Compensation Plans: Performance Plan Share Units (Details) link:presentationLink link:calculationLink link:definitionLink 101060 - Disclosure - Share-based Compensation Plans: Performance Share Units-Market Condition (Details) link:presentationLink link:calculationLink link:definitionLink 101070 - Disclosure - Share-based Compensation Performance Condition (Details) link:presentationLink link:calculationLink link:definitionLink 101080 - Disclosure - Income Taxes: Winter Storm Uri (Details) link:presentationLink link:calculationLink link:definitionLink 101090 - Disclosure - Income Taxes: CARES Act (Details) link:presentationLink link:calculationLink link:definitionLink 101100 - Disclosure - Income Taxes: Tax Cut and Jobs Act (Details) link:presentationLink link:calculationLink link:definitionLink 101110 - Disclosure - Income Taxes: Current and Deferred Income Tax Expense (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 101120 - Disclosure - Income Taxes: Effective Tax Rate Differences From Statutory Tax Rates (Details) link:presentationLink link:calculationLink link:definitionLink 101130 - Disclosure - Income Taxes: Deferred Income Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 101140 - Disclosure - Income Taxes: Net Operating Loss and and Tax Credit Carryforwards (Details) link:presentationLink link:calculationLink link:definitionLink 101150 - Disclosure - Income Taxes: Reconciliation of unrecognized tax benefits (Details) link:presentationLink link:calculationLink link:definitionLink 101160 - Disclosure - Income Taxes: Interest, Penalties and Audits (Details) link:presentationLink link:calculationLink link:definitionLink 101170 - Disclosure - Business Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 101180 - Disclosure - Business Segment Information: Information Relating to Segments Statement of Income (Details) link:presentationLink link:calculationLink link:definitionLink 101190 - Disclosure - Business Segment Information: Segment Assets (Details) link:presentationLink link:calculationLink link:definitionLink 101200 - Disclosure - Business Segment Information: Capital Expenditures and Asset Acquisitions (Details) link:presentationLink link:calculationLink link:definitionLink 101210 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink