Derivative Instruments (Basis Swaps, Interest Rate Caps and Collars) (Details) $ in Millions	9 Months Ended
Sep. 30, 2021 USD ($)
Derivative [Line Items]
Floor rate	0.000
Interest Rate Caps
Derivative [Line Items]
Notional amount of derivative	$ 1,500.0
Interest Rate Collars
Derivative [Line Items]
Notional amount of derivative	$ 7,800.0
UPC Holding \| Basis Swaps
Derivative [Line Items]
Weighted average remaining life	3 months 18 days
Telenet \| Basis Swaps
Derivative [Line Items]
Weighted average remaining life	3 months 18 days
Notional amount due from counterparty \| UPC Holding \| Basis Swaps
Derivative [Line Items]
Notional amount of derivative	$ 2,625.0
Notional amount due from counterparty \| Telenet \| Basis Swaps
Derivative [Line Items]
Notional amount of derivative	$ 2,295.0

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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- Definition

Floor rate on a foreign currency derivative for example, but not limited to, a floor or a collar.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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