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Loss Contingency Damages In Excess Value

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The amount of estimated interest recognized in the period arising from income tax examinations.

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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Commitments and Contingencies (Narrative) (Details) € in Millions, £ in Millions	1 Months Ended				2 Months Ended		3 Months Ended			12 Months Ended
	Oct. 31, 2019 USD ($)	Oct. 31, 2019 EUR (€)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Mar. 31, 2019 GBP (£)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 GBP (£)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 GBP (£)	Dec. 31, 2019 EUR (€)	Dec. 31, 2019 GBP (£)	Jul. 05, 2019	Aug. 01, 2018
Loss Contingencies [Line Items]
Programming and copyright costs										$ 1,702,400,000	$ 1,671,400,000	$ 1,470,200,000
Rent expense under non-cancelable operating lease arrangements											111,800,000	104,500,000
Aggregate expense for matching contributions under various defined contribution plans										42,600,000	$ 41,000,000.0	$ 34,700,000
Belgium Regulatory Developments
Loss Contingencies [Line Items]
Percent reduction in monthly wholesale cable resale access price																	25.00%
Unfavorable Regulatory Action \| Scenario, Forecast \| U.K.
Loss Contingencies [Line Items]
Estimate of possible loss													$ 23,000,000	£ 17.0
Interkabel Acquisition
Loss Contingencies [Line Items]
Damages sought			$ 1,600,000,000	€ 1,400.0
Loss contingency damages in excess value					$ 22,500,000					22,500,000					€ 20.0
Loss contingency accrual					0					$ 0
Deutsche Telekom Litigation
Loss Contingencies [Line Items]
Reduction of annual lease fees										83.33%
Belgium Regulatory Developments
Loss Contingencies [Line Items]
Percent reduction in monthly wholesale cable resale access price																		17.00%
Virgin Media VAT Matters
Loss Contingencies [Line Items]
Estimate of possible loss					54,000,000.0					$ 54,000,000.0						£ 41.3
Virgin Media VAT Matters 2
Loss Contingencies [Line Items]
Estimate of possible loss					83,100,000					83,100,000						£ 63.7
Income tax paid								$ 99,100,000	£ 67.0
Amount paid \| £							£ 3.3		£ 63.7
Interest expense										$ 4,400,000
UPC Austria \| Discontinued Operations, Disposed of by Sale
Loss Contingencies [Line Items]
Asserted claims	$ 79,200,000	€ 70.5			$ 23,100,000	€ 20.6