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Divestitures - Narrative (Details) $ in Millions |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 17, 2024 USD ($) | Sep. 30, 2024 USD ($) asset_group | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) asset_group | Sep. 30, 2023 USD ($) | Aug. 19, 2024 USD ($) | May 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Licenses |  | $ 4,586 |  | $ 4,586 |  |  |  | $ 4,702
Expenses related to strategic alternatives review |  | 11 | $ 4 | 43 | $ 4 |  |  |
(Gain) loss on sale of business and other exit costs, net |  | 12 | $ 0 | 12 | 0 |  |  |
Cash received from divestitures |  |  |  | 91 | $ 0 |  |  |
Wireless spectrum licenses |  |  |  |  |  |  |  |
Licenses |  | 586 |  | 586 |  |  |  |
Subsequent event |  |  |  |  |  |  |  |
License sale agreement amount | $ 1,000 |  |  |  |  |  |  |
UScellular Total |  |  |  |  |  |  |  |
Business divestiture agreement amount |  | $ 4,400 |  | $ 4,400 |  |  |  |
Asset groups | asset_group |  | 2 |  | 2 |  |  |  |
UScellular Total | Maximum |  |  |  |  |  |  |  |
Amount of debt assumed under a business divestiture agreement |  | $ 2,000 |  | $ 2,000 |  |  |  |
UScellular Total | Put/Call Agreement |  |  |  |  |  |  |  |
Business divestiture agreement amount |  | 106 |  | 106 |  |  |  |
Put/call amount, fair value |  | 6 |  | 6 |  |  |  |
TDS Telecom |  |  |  |  |  |  |  |
Business divestiture agreement amount |  |  |  |  |  | $ 26 | $ 31 |
Corporate, Eliminations and Other |  |  |  |  |  |  |  |
Business divestiture agreement amount |  | 101 |  | 101 |  |  |  |
Contingent proceeds |  | $ 9 |  | 9 |  |  |  |
(Gain) loss on sale of business and other exit costs, net |  |  |  | 12 |  |  |  |
Cash received from divestitures |  |  |  | $ 91 |  |  |  |

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