Debt (Maturities of Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
2024 (remainder of year)	$ 613.7
2025	461.0
2026	1,060.3
2027	23.2
2028	6,043.7
2029	5,860.4
Thereafter	1,540.2
Total debt	15,602.5	$ 15,857.6
Deferred financing costs, discounts and premiums, net	(134.4)
Total debt	15,468.1
Current portion	728.9
Long-term portion	14,739.2
Vodafone Collar Loan
Debt Instrument [Line Items]
Total debt	1,358.2	$ 1,391.9
Sunrise Holding
Debt Instrument [Line Items]
2024 (remainder of year)	257.0
2025	67.8
2026	0.0
2027	0.0
2028	1,152.3
2029	3,666.7
Thereafter	1,250.0
Total debt	6,393.8
Deferred financing costs, discounts and premiums, net	(20.2)
Total debt	6,373.6
Current portion	324.8
Long-term portion	6,048.8
Telenet
Debt Instrument [Line Items]
2024 (remainder of year)	346.0
2025	71.6
2026	22.6
2027	23.2
2028	4,891.4
2029	1,222.0
Thereafter	290.2
Total debt	6,867.0
Deferred financing costs, discounts and premiums, net	(26.9)
Total debt	6,840.1
Current portion	392.9
Long-term portion	6,447.2
VM Ireland
Debt Instrument [Line Items]
2024 (remainder of year)	0.0
2025	0.0
2026	0.0
2027	0.0
2028	0.0
2029	971.7
Thereafter	0.0
Total debt	971.7
Deferred financing costs, discounts and premiums, net	(4.9)
Total debt	966.8
Current portion	0.0
Long-term portion	966.8
Other
Debt Instrument [Line Items]
2024 (remainder of year)	10.7
2025	321.6
2026	1,037.7
2027	0.0
2028	0.0
2029	0.0
Thereafter	0.0
Total debt	1,370.0
Deferred financing costs, discounts and premiums, net	(82.4)
Total debt	1,287.6
Current portion	11.2
Long-term portion	$ 1,276.4

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