0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Balance Sheets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Statements of Revenues and Expenses (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Statements of Patronage Capital and Membership Fees (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Disclosure - General link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - Fair Value link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Derivative Instruments link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Investment Securities link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Recently Issued or Adopted Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Contingencies and Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Restricted Cash and Short-Term Investments link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Regulatory Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Member Power Bill Prepayments link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Measurement of Credit Losses on Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Asset Retirement Obligations link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Smarr Combined Cycle Project link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Talbot Combustion Turbine Unit No. 7 link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Spent Nuclear Fuel Storage Costs link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Reportable Segment Information link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - General (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Fair Value (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Derivative Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Investment Securities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Revenue Recognition (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Restricted Cash and Short-Term Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Regulatory Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - General (Details) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Fair Value -Schedule of Estimated Fair Values of Long-term Debt, Including Current Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Derivative Instruments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Derivative Instruments - Schedule of Notional Volume of Natural Gas Derivatives that is Expected to Settle or Mature Each Year (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Derivative Instruments - Schedule of Fair Value of Derivative Instruments Not Designated as Hedging (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Derivative Instruments - Schedule of Fair Value of Derivative Instruments Not Designated as Hedging (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Derivative Instruments - Schedule of Realized and Unrealized Gains (Losses) on Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Investment Securities - Schedule of Debt and Equity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Investment Securities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Revenue Recognition - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Revenue Recognition - Schedule of Sales to Members and Sales to Non-Members (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Leases - Schedule of Lease and Non-lease Components for all Lease Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Leases - Schedule of Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Leases - Schedule of Cash Paid for Amounts Included in the Measurement of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Leases - Schedule of Maturities of Finance Lease Liabilities and Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Leases - Schedule of Maturities of Finance Lease Liabilities and Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Leases - Schedule of Maturities of Finance Lease Liabilities and Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Leases - Schedule of Lease Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Restricted Cash and Short-Term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Regulatory Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Debt - Department of Energy Loan Guarantee (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Debt - Rural Utilities Service Guaranteed Loans (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Debt - Rural Utilities Service Empowering Rural America (New ERA) Loan (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Debt - CFC Term Loan (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Debt - Credit Facilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Smarr Combined Cycle Project (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Talbot Combustion Turbine Unit No. 7 (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Reportable Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink