Commitments and Contingencies (Narrative) (Details) SFr in Millions, $ in Millions, € in Billions	1 Months Ended				12 Months Ended
	May 31, 2022 USD ($)	May 31, 2022 CHF (SFr)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2019	Mar. 31, 2011
Loss Contingencies [Line Items]
Programming and copyright costs					$ 558.0	$ 511.3	$ 1,123.2
Aggregate expense for matching contributions under various defined contribution plans					$ 24.9	$ 22.2	$ 30.1
Percentage of amounts recovered								50.00%
Percentage of amounts recovered								50.00%
Percentage of legal and other third party, fees								50.00%
Unitymedia
Loss Contingencies [Line Items]
Requested reduction in annual lease fees, percent									0.83333
Interkabel Acquisition
Loss Contingencies [Line Items]
Damages sought			$ 1,500.0	€ 1.4
Swisscom MVNO Matter
Loss Contingencies [Line Items]
Damages sought	$ 107.0	SFr 90