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Commitments and Contingencies (Narrative) (Details) SFr in Millions, € in Billions | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 31, 2023 USD ($) | Jan. 31, 2023 CHF (SFr) | Dec. 31, 2015 USD ($) | Dec. 31, 2015 EUR (€) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Dec. 08, 2017 subsidiary | Nov. 26, 2007 association
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Programming costs |  |  |  |  | $ 152,800,000 | $ 154,100,000 |  |
Percentage of amounts recovered |  |  |  |  | 50.00% |  |  |
Percentage of net present value, cost savings |  |  |  |  | 50.00% |  |  |
Percentage of legal and other third party, fees |  |  |  |  | 50.00% |  |  |
Deutsche Telekom Litigation |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Reduction of annual lease fees |  |  |  |  | 83.33% |  |  |
Interkabel Acquisition |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of associations of municipalities | association |  |  |  |  |  |  |  | 4
Damages sought |  |  | $ 1,500,000,000 | € 1.4 |  |  |  |
Loss contingency accrual |  |  |  |  | $ 0 |  |  |
Swisscom MVNO Matter |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Damages sought | $ 100,000,000 | SFr 90 |  |  |  |  |  |
Number of subsidiaries | subsidiary |  |  |  |  |  |  | 1 |

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