0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Statement - Employee Benefit Plan, Statement of Net Asset Available for Benefit (Statement) link:presentationLink link:calculationLink link:definitionLink 0000003 - Statement - Employee Benefit Plan, Statement of Change in Net Asset Available for Benefit (Statement) link:presentationLink link:calculationLink link:definitionLink 0000004 - Disclosure - Employee Benefit Plan, Description of Plan link:presentationLink link:calculationLink link:definitionLink 0000005 - Disclosure - Employee Benefit Plan, Summary of Accounting Policy link:presentationLink link:calculationLink link:definitionLink 0000006 - Disclosure - Employee Benefit Plan, Fair Value and NAV link:presentationLink link:calculationLink link:definitionLink 0000007 - Disclosure - Employee Benefit Plan, Master Trust link:presentationLink link:calculationLink link:definitionLink 0000008 - Disclosure - Employee Benefit Plan, Related-Party and Party-in-Interest Transactions link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - Employee Benefit Plan, Tax Status link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - Employee Benefit Plan, Reconciliation of Financial Statement to Form 5500 link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - Employee Benefit Plan, Subsequent Event link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - Employee Benefit Plan, Schedule, Asset Held for Investment link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - Employee Benefit Plan, Master Trust (Tables) link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - Employee Benefit Plan, Reconciliation of Financial Statement to Form 5500 (Tables) link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - Employee Benefit Plan, Schedule, Asset Held for Investment (Tables) link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - Employee Benefit Plan, Description of Plan (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - Employee Benefit Plan, Summary of Accounting Policy (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - Employee Benefit Plan, Master Trust (Participating Plans and Ownership Percentages) (Details) link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - Employee Benefit Plan, Master Trust (Plans' Percentage Interest) (Details) link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - Employee Benefit Plan, Master Trust (Financial Position of Master Trust) (Details) link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - Employee Benefit Plan, Master Trust (Net Appreciation in FV & Investment Income) (Details) link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - Employee Benefit Plan, Master Trust (AT&T Master Trust Assets at Fair Value) (Details) link:presentationLink link:calculationLink link:definitionLink 0000023 - Disclosure - Employee Benefit Plan, Master Trust (Interest in Investment Fund) (Details) link:presentationLink link:calculationLink link:definitionLink 0000024 - Disclosure - Employee Benefit Plan, Master Trust (Net Appreciation in FV of Group Trust & Total Investment Income) (Details) link:presentationLink link:calculationLink link:definitionLink 0000025 - Disclosure - Employee Benefit Plan, Master Trust (AT&T Group Trust Assets at Fair Value) (Details) link:presentationLink link:calculationLink link:definitionLink 0000026 - Disclosure - Employee Benefit Plan, Master Trust (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 0000027 - Disclosure - Employee Benefit Plan, Related-Party and Party-in-Interest Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 0000028 - Disclosure - Employee Benefit Plan, Reconciliation of Financial Statement to Form 5500 (Net Assets Available for Benefits) (Details) link:presentationLink link:calculationLink link:definitionLink 0000029 - Disclosure - Employee Benefit Plan, Reconciliation of Financial Statement to Form 5500 (Distributions Payable to Participants) (Details) link:presentationLink link:calculationLink link:definitionLink 0000030 - Disclosure - Employee Benefit Plan, Subsequent Event (Details) link:presentationLink link:calculationLink link:definitionLink 0000031 - Disclosure - Employee Benefit Plan, Schedule, Asset Held for Investment (Details) link:presentationLink link:calculationLink link:definitionLink