Goodwill And Other Intangible Assets (Summary Of Changes In Carrying Amount Of Goodwill, By Segment) (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Goodwill [Roll Forward] | ||
| Beginning balance - Net goodwill | $ 63,432 | |
| Ending Balance - Impairments | (29,234) | |
| Ending balance - Net goodwill | 63,425 | $ 63,432 |
| Goodwill Impairment Loss Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag | true | |
| Communications | ||
| Goodwill [Roll Forward] | ||
| Beginning Balance - Goodwill | 91,840 | $ 91,840 |
| Beginning Balance - Impairments | (28,408) | (23,986) |
| Beginning balance - Net goodwill | 63,432 | 67,854 |
| Accumulated Impairment | (4,422) | |
| Dispositions and other | (7) | |
| Ending Balance - Goodwill | 91,833 | 91,840 |
| Ending Balance - Impairments | (28,408) | (28,408) |
| Ending balance - Net goodwill | 63,425 | 63,432 |
| Goodwill | Communications | ||
| Goodwill [Roll Forward] | ||
| Dispositions and other | $ (7) | |
| Goodwill | Communications | Business Wireline | ||
| Goodwill [Roll Forward] | ||
| Accumulated Impairment | $ (4,422) | |
| X | ||||||||||
- Definition Boolean flag that is true when the line item does not exist in the statement of income or comprehensive income. No definition available.
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, before accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Includes amount, before amortization expense and impairment loss, of goodwill for private company. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated impairment loss for asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) of asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized, classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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