Derivative Instruments (Basis Swaps, Interest Rate Caps and Collars) (Details) - Basis Swaps $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($)
UPC Holding
Derivative [Line Items]
Weighted average remaining life	9 months 18 days
Telenet
Derivative [Line Items]
Weighted average remaining life	9 months 18 days
Notional amount due from counterparty \| UPC Holding
Derivative [Line Items]
Notional amount of derivative	$ 2,625.0
Notional amount due from counterparty \| Telenet
Derivative [Line Items]
Notional amount of derivative	$ 2,295.0

Nominal or face amount used to calculate payment on derivative.

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

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant