Dispositions (Classes of Assets and Liabilities) (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 01, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Liabilities:
Cash and restricted cash contributed to the VMO2 JV in connection with the U.K. JV Transaction	$ 3,400.0	$ 0.0	$ 3,424.0	$ 0.0
Net assets	1,478.8
Disposed of by Sale
ASSETS
Current assets	4,868.3
Property and equipment, net	9,465.1
Goodwill	8,214.7
Other assets, net	3,086.9
Total assets	25,635.0
Liabilities:
Current portion of debt and finance lease obligations	3,220.9
Other accrued and current liabilities	2,242.0
Long-term debt and finance lease obligations	16,905.1
Other long-term liabilities	1,788.2
Total liabilities	$ 24,156.2
Disposed of by Sale | UPC Poland
ASSETS
Current assets			23.4
Property and equipment, net			406.8
Goodwill			464.7
Other assets, net			30.1
Total assets			925.0
Liabilities:
Current portion of debt and finance lease obligations			42.7
Other accrued and current liabilities			97.3
Long-term debt and finance lease obligations			5.0
Other long-term liabilities			56.3
Total liabilities			$ 201.3