Derivative Instruments (Interest Rate Swap Contracts, Options and Basis Swaps) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Basis Swaps | UPC Holding
Derivative [Line Items]
Weighted average remaining life	2 months 12 days
Notional amount due from counterparty | Interest Rate Swap | UPC Holding
Derivative [Line Items]
Notional amount	$ 5,945.2
Weighted average remaining life	2 years 3 months 18 days
Notional amount due from counterparty | Interest Rate Swap | Telenet
Derivative [Line Items]
Notional amount	$ 2,954.7
Weighted average remaining life	2 years 3 months 18 days
Notional amount due from counterparty | Basis Swaps | UPC Holding
Derivative [Line Items]
Notional amount	$ 3,417.0
Notional amount due from counterparty | Basis Swaps | Telenet
Derivative [Line Items]
Notional amount	2,295.0
Notional amount due to counterparty | Interest Rate Swap | UPC Holding
Derivative [Line Items]
Notional amount	$ 3,419.2
Weighted average remaining life	3 years 8 months 12 days
Notional amount due to counterparty | Interest Rate Swap | Telenet
Derivative [Line Items]
Notional amount	$ 1,394.5
Weighted average remaining life	9 months 18 days