0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - TXNM link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - TXNM link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - TXNM (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - TXNM link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS - TXNM link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS - TXNM (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - TXNM link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - PNM link:presentationLink link:calculationLink link:definitionLink 9952159 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - PNM link:presentationLink link:calculationLink link:definitionLink 9952160 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - PNM (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952161 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - PNM link:presentationLink link:calculationLink link:definitionLink 9952162 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS - PNM link:presentationLink link:calculationLink link:definitionLink 9952163 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS - PNM (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952164 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - PNM link:presentationLink link:calculationLink link:definitionLink 9952165 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - TNMP link:presentationLink link:calculationLink link:definitionLink 9952166 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - TNMP link:presentationLink link:calculationLink link:definitionLink 9952167 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS - TNMP link:presentationLink link:calculationLink link:definitionLink 9952168 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS - TNMP (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952169 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCKHOLDER’S EQUITY - TNMP link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Significant Accounting Policies and Responsibility for Financial Statements link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Accumulated Other Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Electric Operating Revenues link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - Variable Interest Entities link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - Fair Value of Derivative and Other Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952177 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 9952178 - Disclosure - Financing link:presentationLink link:calculationLink link:definitionLink 9952179 - Disclosure - Pension and Other Postretirement Benefit Plans link:presentationLink link:calculationLink link:definitionLink 9952180 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952181 - Disclosure - Regulatory and Rate Matters link:presentationLink link:calculationLink link:definitionLink 9952182 - Disclosure - Lease Commitments link:presentationLink link:calculationLink link:definitionLink 9952183 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952184 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 9952185 - Disclosure - Goodwill link:presentationLink link:calculationLink link:definitionLink 9952186 - Disclosure - Merger link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Significant Accounting Policies and Responsibility for Financial Statements (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Electric Operating Revenues (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Variable Interest Entities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Fair Value of Derivative and Other Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Financing (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Pension and Other Postretirement Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Regulatory and Rate Matters (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Lease Commitments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Related Party Transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Significant Accounting Policies and Responsibility for Financial Statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Segment Information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Segment Information - Schedule of Financial Information by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Electric Operating Revenues - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Electric Operating Revenues - Schedule of Disaggregation of revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Variable Interest Entities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Variable Interest Entities - Schedule of Operations for Valencia (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Variable Interest Entities - Schedule of Impact on Results of Operation (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Variable Interest Entities - Schedule of Impact on Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Fair Value of Derivative and Other Financial Instruments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Fair Value of Derivative and Other Financial Instruments - Investments in NDT and Gross Realized Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Fair Value of Derivative and Other Financial Instruments - Schedule of Gross Realized Gains and Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Fair Value of Derivative and Other Financial Instruments - Schedule of Maturities of Debt Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Fair Value of Derivative and Other Financial Instruments - Schedule of Items Recorded and Presented by Level of Hierarchy (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Stock-Based Compensation - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Stock-Based Compensation - Weighted Average Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Stock-Based Compensation - Restricted Stock Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Stock-Based Compensation - Additional Information Concerning Restricted Stock Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Financing - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Financing - Schedule of Forward Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Financing - Schedule of Short-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Pension and Other Postretirement Benefit Plans - Schedule of Net Periodic Benefit Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Pension and Other Postretirement Benefit Plans - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Commitments and Contingencies - Nuclear Spent Fuel and Waste Disposal (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Commitments and Contingencies - Santa Fe Generating Station (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Commitments and Contingencies - Coal Supply (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Commitments and Contingencies - SJGS Decommissioning (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Commitments and Contingencies - PVNGS Liability and Insurance Matters (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Regulatory and Rate Matters - TXNM (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Regulatory and Rate Matters - Schedule of PNM’s Revenues Recorded for the Renewable Energy Rider (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Regulatory and Rate Matters - PNM (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Regulatory and Rate Matters - Energy Efficiency and Load Management (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Regulatory and Rate Matters - 2023 IRP, 2028 Resource Application, Grid Modernization Application (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Regulatory and Rate Matters - Meta Platforms Inc. Data Center - Phase IV, BESS Project (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Regulatory and Rate Matters - SB 170 Projects and Rio Puerco-Pajarito-Prosperity CCN (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Regulatory and Rate Matters - TNMP (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Regulatory and Rate Matters - Schedule of Transmission Cost of Service Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Regulatory and Rate Matters - Schedule of Interim Distribution Rate Increases (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Regulatory and Rate Matters - HB 5247, Energy Efficiency and System Resiliency Plan (“SRP”) (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Lease Commitments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Lease Commitments - Schedule of Operating Lease Balance Sheet Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Lease Commitments - Schedule of Finance Lease Balance Sheet Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Lease Commitments - Schedule of Weighted Average Remaining Lease Terms and Discount Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Lease Commitments - Schedule of Components of Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Lease Commitments - Schedule of Supplemental Cash Flows Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Lease Commitments - Schedule of Future Expected Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Lease Commitments - Schedule of Future Expected Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Merger (Details) link:presentationLink link:calculationLink link:definitionLink