Debt ( Component of Debt-Footnotes) (Details) € in Millions, $ in Millions	Mar. 31, 2023 EUR (€)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Weighted average interest rate	5.59%	5.59%
Unused borrowing capacity, amount		$ 1,487.4
Deferred liabilities		425.5	$ 428.1
Long-term Debt
Debt Instrument [Line Items]
Estimated fair value		$ 14,100.0	$ 12,600.0
Aggregate Variable and Fixed Rate Indebtedness
Debt Instrument [Line Items]
Weighted average interest rate	3.22%	3.22%
UPC Holding Bank Facility
Debt Instrument [Line Items]
Weighted average interest rate	6.96%	6.96%
UPC Holding Bank Facility | UPC Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	€ 713.4	$ 775.4
Available to loan or distribute	713.4	775.4
UPC Holding Bank Facility | Debt Covenant, Scenario 1 | UPC Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	713.4	775.4
Available to loan or distribute	€ 713.4	$ 775.4
Telenet Credit Facility
Debt Instrument [Line Items]
Weighted average interest rate	6.27%	6.27%
Telenet Credit Facility | UPC Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	€ 555.0	$ 603.3
Available to loan or distribute	555.0	603.3
Telenet Credit Facility | Debt Covenant, Scenario 1 | UPC Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	555.0	603.3
Available to loan or distribute	€ 555.0	$ 603.3
VM Ireland Credit Facility
Debt Instrument [Line Items]
Weighted average interest rate	6.38%	6.38%
Unused borrowing capacity, amount	€ 100.0	$ 108.7
VM Ireland Credit Facility | UPC Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	100.0	108.7
Available to loan or distribute	100.0	108.7
VM Ireland Credit Facility | Debt Covenant, Scenario 1 | UPC Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	100.0	108.7
Available to loan or distribute	100.0	108.7
UPC Revolving Facility One
Debt Instrument [Line Items]
Unused borrowing capacity, amount	713.4	775.4
UPC Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	23.0	25.0
Telenet Revolving Credit Facility I
Debt Instrument [Line Items]
Unused borrowing capacity, amount	510.0	554.3
Telenet Overdraft Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	25.0	27.2
Telenet Revolving Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount	€ 20.0	$ 21.8