0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - NATURE OF OPERATIONS AND FINANCIAL STATEMENT PRESENTATION link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - REGULATORY MATTERS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - ACCOUNTS RECEIVABLE link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - DEBT AND CREDIT AGREEMENT link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - EMPLOYEE BENEFITS PLANS link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - NATURE OF OPERATIONS AND FINANCIAL STATEMENT PRESENTATION (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - NATURE OF OPERATIONS AND FINANCIAL STATEMENT PRESENTATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - REGULATORY MATTERS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - ACCOUNTS RECEIVABLE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - RELATED PARTY TRANSACTIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - EMPLOYEE BENEFITS PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - NATURE OF OPERATIONS AND FINANCIAL STATEMENT PRESENTATION (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - NATURE OF OPERATIONS AND FINANCIAL STATEMENT PRESENTATION (Cash and Cash Equivalents) (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - NATURE OF OPERATIONS AND FINANCIAL STATEMENT PRESENTATION (Cash and Cash Equivalents) (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - REGULATORY MATTERS (2025 Rate Case) (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - REGULATORY MATTERS (Cost Recovery Mechanisms) (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - REGULATORY MATTERS (Regulatory Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - REGULATORY MATTERS (Regulatory Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - REGULATORY MATTERS (Regulatory Assets and Liabilities - Footnotes) (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - REGULATORY MATTERS (Roadrunner Reserve II) (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - REVENUE (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - ACCOUNTS RECEIVABLE (Components) (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - ACCOUNTS RECEIVABLE (Allowance for credit losses) (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - DEBT AND CREDIT AGREEMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - COMMITMENTS AND CONTINGENCIES (Renewable Power Purchase Agreements) (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - COMMITMENTS AND CONTINGENCIES (Mine Reclamation at Generation Facilities Not Operated by TEP) (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tax Credit Transfer Indemnification) (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - COMMITMENTS AND CONTINGENCIES (FERC Market-Based Rate Authority) (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - COMMITMENTS AND CONTINGENCIES (Performance Guarantees) (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - EMPLOYEE BENEFITS PLANS (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Schedule of Financial Instruments Measured at Fair Value on Recurring Basis) (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Schedule of Potential Offset of Assets and Liabilities by Counterparty Netting and Cash Collateral) (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Schedule of Financial Impact of Energy Contracts) (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Schedule of Derivative Volumes) (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Credit Risk) (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Schedule of Face Value and Estimated Fair Value of Long-Term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Cash Transactions) (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Non-Cash Transactions) (Details) link:presentationLink link:calculationLink link:definitionLink