Derivative Instruments (Impact of Derivative Instruments on Borrowing Costs) (Details)	Mar. 31, 2023
Derivative [Line Items]
Impact of derivative instruments on borrowing costs	(2.93%)
UPC Holding
Derivative [Line Items]
Impact of derivative instruments on borrowing costs	(3.14%)
Telenet
Derivative [Line Items]
Impact of derivative instruments on borrowing costs	(2.72%)
VM Ireland
Derivative [Line Items]
Impact of derivative instruments on borrowing costs	(2.58%)