Acquisitions and Dispositions (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 01, 2022	Mar. 31, 2023	Jul. 19, 2022
NetCo | Telenet
Business Acquisition [Line Items]
Percentage of ownership interest			66.80%
NetCo | Fluvius
Business Acquisition [Line Items]
Percentage of ownership interest			33.20%
Disposed of by sale | UPC Poland
Business Acquisition [Line Items]
Ownership percentage sold	100.00%
Term of transitional services		5 years
Revenue from transitional services		$ 9.3