Derivative Instruments (Cross-currency Derivative Contracts) (Details) - 3 months ended Mar. 31, 2023 € in Millions, SFr in Millions, $ in Millions	USD ($)	EUR (€)	CHF (SFr)
UPC Holding | Cross-Currency Swap 1
Derivative [Line Items]
Weighted average remaining life	2 years 6 months
UPC Holding | Cross-Currency Swap 2
Derivative [Line Items]
Weighted average remaining life	5 years 2 months 12 days
UPC Holding | Cross-Currency Swap 3
Derivative [Line Items]
Weighted average remaining life	4 years
Telenet | Cross-Currency Swap 4
Derivative [Line Items]
Weighted average remaining life	3 years 9 months 18 days
Telenet | Cross-Currency Swap 5
Derivative [Line Items]
Weighted average remaining life	1 year 9 months 18 days
Notional amount due from counterparty | UPC Holding | Cross-Currency Swap 1
Derivative [Line Items]
Notional amount | $	$ 250.0
Notional amount due from counterparty | UPC Holding | Cross-Currency Swap 2
Derivative [Line Items]
Notional amount | $	4,475.0
Notional amount due from counterparty | UPC Holding | Cross-Currency Swap 3
Derivative [Line Items]
Notional amount | €		€ 1,952.6
Notional amount due from counterparty | Telenet | Cross-Currency Swap 4
Derivative [Line Items]
Notional amount | $	3,940.0
Notional amount due from counterparty | Telenet | Cross-Currency Swap 5
Derivative [Line Items]
Notional amount | €		45.2
Notional amount due to counterparty | UPC Holding | Cross-Currency Swap 1
Derivative [Line Items]
Notional amount | €		220.6
Notional amount due to counterparty | UPC Holding | Cross-Currency Swap 2
Derivative [Line Items]
Notional amount | SFr			SFr 4,098.2
Notional amount due to counterparty | UPC Holding | Cross-Currency Swap 3
Derivative [Line Items]
Notional amount | SFr			SFr 2,176.5
Notional amount due to counterparty | Telenet | Cross-Currency Swap 4
Derivative [Line Items]
Notional amount | €		€ 3,489.6
Notional amount due to counterparty | Telenet | Cross-Currency Swap 5
Derivative [Line Items]
Notional amount | $	$ 50.0