Employee Benefit Plan, Master Trust (Net Appreciation in FV & Investment Income) (Details) - EBP-43-1301883-022 [Master Trust] $ in Thousands |
12 Months Ended |
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Dec. 31, 2025
USD ($)
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| EBP, Master Trust [Line Items] | |
| Net appreciation in fair value of AT&T Master Trust Investments | $ 5,204,225 |
| Investment income: | |
| Dividends | 186,168 |
| Interest | 268 |
| Income from investment in Group Trust | 953,231 |
| Net income from investment in AT&T Savings Plan Master Trust | $ 6,343,892 |
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- Definition Amount of increase (decrease) in net asset available for benefit from income (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, realized and unrealized gain (loss) on investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase (decrease) in net asset available for benefit from investment income (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in net asset available for benefit from unrealized gain (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of increase in net asset available for benefit from dividend income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Amount of increase in net asset available for benefit from interest income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Excludes interest income on note receivable from participant. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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