Dispositions (Narrative) (Details) € in Millions, zł in Millions, $ in Millions					3 Months Ended	12 Months Ended
	Jun. 01, 2022 USD ($)	Apr. 01, 2022 USD ($)	Apr. 01, 2022 PLN (zł)	Jun. 01, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 USD ($) site	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 01, 2022 EUR (€)	Sep. 01, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received in connection with the sale of UPC Poland		$ 1,553.3	zł 6,520.4			$ 0.0		$ 0.0
Gain on disposal of discontinued operations, net of taxes						0.0	$ 846.4	0.0
Gain (loss) on disposition of assets						0.0	700.5	0.0
Operating lease	$ 615.1					1,761.8	1,724.4
Operating lease	$ 615.1					1,803.9	1,791.1
Term of leases						2,535.0
Net cash received in connection with the U.K. JV Transaction						0.0	0.0	108.6
Share of results of affiliates, net						(2,019.3)	(1,267.8)	(175.4)
Gain on atlas edge jv transactions						$ 0.0	0.0	227.5
AtlasEdge JV
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Co-venturer ownership percentage										50.00%
VMO2 JV
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage				50.00%		50.00%
Share of results of affiliates, net						$ (1,723.1)	(1,396.6)	(97.2)
Co-venturer ownership percentage				50.00%
U.K. JV Transaction
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash received in connection with the U.K. JV Transaction				$ 108.6
Debt (excluding vendor financing)				44.5
Gain (adjustment to gain) on JV Transaction				10,873.8		$ 0.0	0.0	10,873.8
Cumulative foreign currency translation loss				$ 1,198.6
U.K. J.V. Entities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Share of results of affiliates, net								890.5
AtlasEdge JV
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage						48.10%
Gain (adjustment to gain) on JV Transaction					$ 227.5	$ 0.0	0.0	227.5
Share of results of affiliates, net						$ (31.1)	(23.3)	$ (5.8)
Cash received in connection with the Atlas Edge JV Transactions					144.5
Gain on atlas edge jv transactions					$ 1.8
Telenet Tower Lease Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of sites | site						475
Term of leases						$ 106.8
Telenet
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Term of contract	15 years								15 years
Disposed of by Sale | UPC Poland
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage sold		100.00%	100.00%
Gain on disposal of discontinued operations, net of taxes							846.4
Cumulative foreign currency translation gains (loss)							10.9
Term of transitional services		5 years	5 years
Revenue from transitional services						$ 24.6	$ 26.6
Disposed of by Sale | Telenet
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total enterprise value	$ 779.9								€ 733.0
Gain (loss) on disposition of assets	$ 700.5