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Recently Completed Divestiture of the Latin American Business and Planned Divestiture of ILEC Businesses - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Aug. 03, 2021 | Jun. 30, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Depreciation and amortization |  |  | $ 1,635 | $ 2,191 |
Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Long-term debt, net of discounts |  | $ 1,395 | 1,395 |  | $ 1,377
Depreciation and amortization |  | 163 | 333 |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal |  |  | 0 |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | Embarq | Senior notes |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Long-term debt, net of discounts | $ 1,400 | 1,400 | 1,400 |  | 1,400
Disposal Group, Held-for-sale, Not Discontinued Operations | Latin American Business |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Long-term debt, net of discounts |  | 0 | 0 |  | 0
Depreciation and amortization |  | 48 | 97 |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | ILEC Business |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Cash consideration from disposal of business | 7,500 |  |  |  |
Long-term debt, net of discounts |  | 1,395 | 1,395 |  | $ 1,377
Purchaser's transaction expenses | $ 1,700 |  |  |  |
Depreciation and amortization |  | $ 115 | $ 236 |  |

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