Dispositions (Classes of Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Jun. 01, 2021	Dec. 31, 2020
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		$ 26.8
Property and equipment, net	406.8		427.5
Goodwill	464.7		501.0
Other assets, net	30.1		24.8
Total assets	925.0		980.1
Liabilities:
Current portion of debt and finance lease obligations	42.7		44.3
Other accrued and current liabilities	97.3		99.1
Long-term debt and finance lease obligations	5.0		6.0
Other long-term liabilities	56.3		38.1
Total liabilities	$ 201.3		187.5
Held for sale | U.K. J.V. Entities
ASSETS
Current assets			4,519.8
Property and equipment, net			8,614.0
Goodwill			7,918.5
Other assets, net			3,230.4
Total assets			24,282.7
Liabilities:
Current portion of debt and finance lease obligations			2,699.5
Other accrued and current liabilities			2,207.3
Long-term debt and finance lease obligations			16,724.1
Other long-term liabilities			1,566.3
Total liabilities			$ 23,197.2