AT&T INC.

000090 - Document - Document Entity Information

000100 - Statement - Consolidated Statements Of Income

000150 - Statement - Consolidated Statements of Comprehensive Income

000160 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical)

000200 - Statement - Consolidated Balance Sheets

000205 - Statement - Consolidated Balance Sheets (Parenthetical)

000300 - Statement - Consolidated Statements Of Cash Flows

000400 - Statement - Consolidated Statements Of Changes In Stockholders' Equity

000405 - Statement - Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical)

010101 - Disclosure - Summary Of Significant Accounting Policies

010201 - Disclosure - Earnings Per Share

010301 - Disclosure - Accumulated Other Comprehensive Income

010401 - Disclosure - Segment Information

010501 - Disclosure - Revenue Recognition

010601 - Disclosure - Acquisitions, Dispositions And Other Adjustments

010701 - Disclosure - Property, Plant And Equipment

010801 - Disclosure - Leases

010901 - Disclosure - Goodwill And Other Intangible Assets

011001 - Disclosure - Equity Method Investments

011101 - Disclosure - Inventories and Theatrical Film and Television Production Costs

011201 - Disclosure - Debt

011301 - Disclosure - Fair Value Measurements And Disclosure

011401 - Disclosure - Income Taxes

011501 - Disclosure - Pension And Postretirement Benefits

011601 - Disclosure - Share-Based Payment

011701 - Disclosure - Stockholders' Equity

011801 - Disclosure - Sale of Receivables

011901 - Disclosure - Tower Transaction

012001 - Disclosure - FirstNet

012101 - Disclosure - Contingent Liabilities

012201 - Disclosure - Additional Financial Information

012301 - Disclosure - Quarterly Financial Information (Unaudited)

012501 - Disclosure - Valuation And Qualifying Accounts

020101 - Disclosure - Summary Of Significant Accounting Policies (Policy)

020501 - Disclosure - Revenue Recognition (Policy)

021301 - Disclosure - Fair Value Measurements and Disclosure (Policy)

021501 - Disclosure - Pension and Postretirement Benefits (Policy)

030201 - Disclosure - Earnings Per Share (Tables)

030301 - Disclosure - Accumulated Other Comprehensive Income (Tables)

030401 - Disclosure - Segment Information (Tables)

030501 - Disclosure - Revenue Recognition (Tables)

030601 - Disclosure - Acquisitions, Dispositions And Other Adjustments (Tables)

030701 - Disclosure - Property, Plant And Equipment (Tables)

030801 - Disclosure - Leases (Tables)

030901 - Disclosure - Goodwill And Other Intangible Assets (Tables)

031001 - Disclosure - Equity Method Investments (Tables)

031101 - Disclosure - Inventories and Theatrical Film and Television Production Costs (Tables)

031201 - Disclosure - Debt (Tables)

031301 - Disclosure - Fair Value Measurements And Disclosure (Tables)

031401 - Disclosure - Income Taxes (Tables)

031501 - Disclosure - Pension And Postretirement Benefits (Tables)

031601 - Disclosure - Share-Based Payment (Tables)

031801 - Disclosure - Sale of Receivables (Tables)

032201 - Disclosure - Additional Financial Information (Tables)

032301 - Disclosure - Quarterly Financial Information (Unaudited) (Tables)

032501 - Disclosure - Valuation And Qualifying Accounts (Tables)

040101 - Disclosure - Summary Of Significant Accounting Policies (Narrative) (Details)

040201 - Disclosure - Earnings Per Share (Details)

040202 - Disclosure - Earnings Per Share (Narrative) (Details)

040301 - Disclosure - Accumulated Other Comprehensive Income (Details)

040401 - Disclosure - Segment Information (Summary Of Operating Revenues And Expenses By Segment) (Narrative) (Details)

040402 - Disclosure - Segment Information (Reconciliation of Revenue from Segments to Consolidated) (Details)

040403 - Disclosure - Segment Information (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details)

040404 - Disclosure - Segment Information (Schedule of Revenues by Geographic Region) (Details)

040405 - Disclosure - Segment Information (Intersegment Details) (Details)

040406 - Disclosure - Segment Information (Intersegment Assets, Equity Affiliates Investments and Capital Expenditures Details) (Details)

040501 - Disclosure - Revenue Recognition (Narrative) (Details)

040502 - Disclosure - Revenue Recognition (Revenue Categories) (Details)

040503 - Disclosure - Revenue Recognition (Deferred Contract Acquisition and Fulfillment Costs) (Details)

040504 - Disclosure - Revenue Recognition (Contract Assets and Liabilities) (Details)

040601 - Disclosure - Acquisitions, Dispositions And Other Adjustments (Time Warner, Otter and AppNexus Acquisitions Narrative) (Details)

040602 - Disclosure - Acquisitions, Dispositions And Other Adjustments (Other Acquisitions Narrative) (Details)

040603 - Disclosure - Acquisitions, Dispositions And Other Adjustments (Dispositions Narrative) (Details)

040604 - Disclosure - Acquisitions, Dispositions And Other Adjustments (Held-For-Sale) (Narrative) (Details)

040605 - Disclosure - Acquisitions, Dispositions And Other Adjustments (Fair Value of Assets Acquired And Liabilities Assumed) (Details)

040606 - Disclosure - Acquisitions, Dispositions And Other Adjustments (Pro-Forma Consolidated Results Of Operations) (Details)

040701 - Disclosure - Property, Plant And Equipment (Details)

040702 - Disclosure - Property, Plant And Equipment (Narrative) (Details)

040801 - Disclosure - Leases (Narrative) (Details)

040802 - Disclosure - Leases (Components of Lease Expense) (Details)

040803 - Disclosure - Leases (Supplemental Balance Sheet Information Related to Leases) (Details)

040804 - Disclosure - Leases (Future Minimum Maturities of Lease Liabilities) (Details)

040901 - Disclosure - Goodwill And Other Intangible Assets (Narrative) (Details)

040902 - Disclosure - Goodwill And Other Intangible Assets (Summary Of Changes In Carrying Amount Of Goodwill, By Segment) (Details)

040903 - Disclosure - Goodwill And Other Intangible Assets (Schedule Of Amortized Intangible Assets) (Details)

040904 - Disclosure - Goodwill And Other Intangible Assets (Schedule Of Indefinite-Life Intangible Assets Not Subject To Amortization) (Details)

041001 - Disclosure - Equity Method Investments (Narrative) (Details)

041002 - Disclosure - Equity Method Investments (Reconciliation Of Investments In Equity Affiliates) (Details)

041101 - Disclosure - Inventories and Theatrical Film and Television Production Costs (Details)

041201 - Disclosure - Debt (Summary Of Long-Term Debt Of AT&T And Its Subsidiaries) (Details)

041202 - Disclosure - Debt (Debt Maturing Within One Year) (Details)

041203 - Disclosure - Debt (Long-Term Debt - Scheduled Repayments) (Details)

041204 - Disclosure - Debt (Narrative) (Details)

041205 - Disclosure - Debt (Financing Activities) (Narrative) (Details)

041206 - Disclosure - Debt (Credit Facilities) (Narrative) (Details)

041207 - Disclosure - Debt (Credit Agreement) (Narrative) (Details)

041301 - Disclosure - Fair Value Measurements And Disclosure (Narrative) (Details)

041302 - Disclosure - Fair Value Measurements And Disclosure (Long-Term Debt And Other Financial Instruments) (Details)

041303 - Disclosure - Fair Value Measurements And Disclosure (Fair Value Leveling) (Details)

041304 - Disclosure - Fair Value Measurement and Disclosure (Gains and Losses on Equity Securities) (Details)

041305 - Disclosure - Fair Value Measurements And Disclosure (Notional Amount Of Our Outstanding Derivative Positions) (Details)

041306 - Disclosure - Fair Value Measurements And Disclosure (Effect Of Derivatives On The Consolidated Statements Of Income) (Details)

041401 - Disclosure - Income Taxes (Narrative) (Details)

041402 - Disclosure - Income Taxes (Components Of Deferred Tax Liabilities (Assets)) (Details)

041403 - Disclosure - Income Taxes (Changes In Unrecognized Tax Benefits Balance For Federal State And Foreign Tax) (Details)

041404 - Disclosure - Income Taxes (Components of Income Tax Expense) (Details)

041405 - Disclosure - Income Taxes (Schedule of Income before Income Tax, Domestic and Foreign) (Details)

041406 - Disclosure - Income Taxes (Reconciliation Of Income Tax Expense Based On Federal Statutory Rate To Amount Per Effective Tax Rate) (Details)

041501 - Disclosure - Pension And Postretirement Benefits (Narrative) (Details)

041502 - Disclosure - Pension And Postretirement Benefits (Change In The Projected Benefit Obligation) (Details)

041503 - Disclosure - Pension And Postretirement Benefits (Change In The Value Of Plan Assets And The Plans' Funded Status) (Details)

041504 - Disclosure - Pension And Postretirement Benefits (Employee Benefit Obligation Amounts Recognized) (Details)

041505 - Disclosure - Pension And Postretirement Benefits (Net Periodic Benefit Cost) (Details)

041506 - Disclosure - Pension And Postretirement Benefits (Other Changes Recognized in Other Comprehensive Income) (Details)

041507 - Disclosure - Pension and Postretirement Benefits (Weighted Average Assumptions - Projected Benefit Obligation And Net Pension And Postemployment Benefit Cost) (Details)

041508 - Disclosure - Pension And Postretirement Benefits (Schedule Of Defined Benefit Plan Targeted And Actual Plan Asset Allocations) (Details)

041509 - Disclosure - Pension And Postretirement Benefits (Schedule Of Fair Value Of Pension And Postretirement Assets And Liabilities By Level) (Details)

041510 - Disclosure - Pension And Postretirement Benefits (Fair Value Assets Measured On Recurring Basis Unobservable Input (Level 3) Reconciliation) (Details)

041511 - Disclosure - Pension And Postretirement Benefits (Estimated Future Benefit Payments) (Details)

041601 - Disclosure - Share-Based Payments (Narrative) (Details)

041602 - Disclosure - Share-Based Payments (Compensation Cost And Valuation Assumption) (Details)

041603 - Disclosure - Share-Based Payments (Summary Of Nonvested Stock Units Activity) (Details)

041701 - Disclosure - Stockholder Equity (Narrative) (Details)

041801 - Disclosure - Sale Of Receivables (Narrative) (Details)

041802 - Disclosure - Sale Of Equipment Installment Receivables (Equipment Installment and WarnerMedia Programs) (Details)

041803 - Disclosure - Sale Of Receivables (Finance Receivables) (Details)

041804 - Disclosure - Sale Of Receivables (Finance Receivables Repurchased) (Details)

041805 - Disclosure - Sale of Equipment Installment Receivables (Summary of WarnerMedia Receivables Sold) (Details)

041901 - Disclosure - Tower Transaction (Narrative) (Details)

042001 - Disclosure - FirstNet (Narrative) (Details)

042101 - Disclosure - Contingent Liabilities (Narrative) (Details)

042201 - Disclosure - Additional Financial Information (Narrative) (Details)

042202 - Disclosure - Additional Financial Information (Consolidated Balance Sheets) (Details)

042203 - Disclosure - Additional Financial Information (Consolidated Statements Of Income) (Details)

042204 - Disclosure - Additional Financial Information (Cash and Cash Equivalents and Restricted Cash) (Details)

042205 - Disclosure - Additional Financial Information (Consolidated Statements Of Cash Flows) (Details)

042206 - Disclosure - Additional Financial Information (Consolidated Statements Of Cash Flows Operating Leases) (Details)

042301 - Disclosure - Quarterly Financial Information (Unaudited) (Quarterly Financial Results) (Details)

042501 - Disclosure - Valuation And Qualifying Accounts (Allowance For Doubtful Accounts) (Details)