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Debt (Capital Lease Obligations) (Schedule) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
2023	$ 721.5
2024	43.8
2025	32.4
2026	33.9
2027	33.6
Thereafter	12,505.0
Total vendor financing maturities	13,370.2	$ 14,398.8
Current portion	721.5
Long-term portion	12,605.6
UPC Holding
Debt Instrument [Line Items]
2023	284.6
2024	0.0
2025	0.0
2026	0.0
2027	0.0
Thereafter	6,053.5
Current portion	284.6
Long-term portion	6,027.7
Telenet
Debt Instrument [Line Items]
2023	403.5
2024	28.7
2025	31.3
2026	33.9
2027	33.6
Thereafter	5,487.6
Current portion	403.5
Long-term portion	5,603.7
Other
Debt Instrument [Line Items]
2023	33.4
2024	15.1
2025	1.1
2026	0.0
2027	0.0
Thereafter	0.0
Current portion	33.4
Long-term portion	16.2
Vendor financing
Debt Instrument [Line Items]
2023	688.5
2024	15.1
2025	1.1
Total vendor financing maturities	704.7	$ 843.2	$ 1,099.6
Current portion	688.5
Long-term portion	16.2
Vendor financing \| UPC Holding
Debt Instrument [Line Items]
2023	284.6
2024	0.0
2025	0.0
Total vendor financing maturities	284.6
Current portion	284.6
Long-term portion	0.0
Vendor financing \| Telenet
Debt Instrument [Line Items]
2023	370.5
2024	0.0
2025	0.0
Total vendor financing maturities	370.5
Current portion	370.5
Long-term portion	0.0
Vendor financing \| Other
Debt Instrument [Line Items]
2023	33.4
2024	15.1
2025	1.1
Total vendor financing maturities	49.6
Current portion	33.4
Long-term portion	$ 16.2