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Basis of Presentation - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Basis of Presentation [Line Items] |  |
Noncash software license acquisitions | $ 5 | $ 3
UScellular |  |
Basis of Presentation [Line Items] |  |
TDS ownership of UScellular | 84.00% |

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