v3.10.0.1

Derivative Instruments (Cross-currency Derivative Contracts) (Details) - 12 months ended Dec. 31, 2018 € in Millions, $ in Millions	EUR (€)	USD ($)
Virgin Media | Cross-Currency Swap 1
Derivative [Line Items]
Weighted average remaining life	4 years
Virgin Media | Cross-Currency Swap 2
Derivative [Line Items]
Weighted average remaining life	4 years 10 months 24 days
Virgin Media | Cross-Currency Swap 3
Derivative [Line Items]
Weighted average remaining life	6 years 1 month 6 days
UPC Holding | Cross-Currency Swap 4
Derivative [Line Items]
Weighted average remaining life	5 years 7 months 6 days
UPC Holding | Cross-Currency Swap 5
Derivative [Line Items]
Weighted average remaining life	6 years 2 months 12 days
UPC Holding | Cross-Currency Swap 6
Derivative [Line Items]
Weighted average remaining life	5 years 9 months 18 days
UPC Holding | Cross-Currency Swap 7
Derivative [Line Items]
Weighted average remaining life	1 year 8 months 12 days
UPC Holding | Cross-Currency Swap 8
Derivative [Line Items]
Weighted average remaining life	3 years
UPC Holding | Cross-Currency Swap 9
Derivative [Line Items]
Weighted average remaining life	2 years 9 months 18 days
UPC Holding | Cross-Currency Swap 10
Derivative [Line Items]
Weighted average remaining life	3 years 1 month 6 days
Telenet | Cross-Currency Swap 11
Derivative [Line Items]
Weighted average remaining life	6 years 6 months
Telenet | Cross-Currency Swap 12
Derivative [Line Items]
Weighted average remaining life	6 years 4 months 24 days
Due From Counterparty | Virgin Media | Cross-Currency Swap 1
Derivative [Line Items]
Notional amount of derivative		$ 400.0
Due From Counterparty | Virgin Media | Cross-Currency Swap 2
Derivative [Line Items]
Notional amount of derivative		7,182.9
Due From Counterparty | Virgin Media | Cross-Currency Swap 3
Derivative [Line Items]
Notional amount of derivative		2,365.8
Due From Counterparty | UPC Holding | Cross-Currency Swap 4
Derivative [Line Items]
Notional amount of derivative		2,420.0
Due From Counterparty | UPC Holding | Cross-Currency Swap 5
Derivative [Line Items]
Notional amount of derivative		1,200.0
Due From Counterparty | UPC Holding | Cross-Currency Swap 6
Derivative [Line Items]
Notional amount of derivative		2,057.0
Due From Counterparty | UPC Holding | Cross-Currency Swap 7
Derivative [Line Items]
Notional amount of derivative		299.2
Due From Counterparty | UPC Holding | Cross-Currency Swap 8
Derivative [Line Items]
Notional amount of derivative		375.5
Due From Counterparty | UPC Holding | Cross-Currency Swap 9
Derivative [Line Items]
Notional amount of derivative		822.9
Due From Counterparty | UPC Holding | Cross-Currency Swap 10
Derivative [Line Items]
Notional amount of derivative		217.2
Due From Counterparty | Telenet | Cross-Currency Swap 11
Derivative [Line Items]
Notional amount of derivative		3,670.0
Due From Counterparty | Telenet | Cross-Currency Swap 12
Derivative [Line Items]
Notional amount of derivative | €	€ 1,431.2
Due To Counterparty | Virgin Media | Cross-Currency Swap 1
Derivative [Line Items]
Notional amount of derivative		339.6
Due To Counterparty | Virgin Media | Cross-Currency Swap 2
Derivative [Line Items]
Notional amount of derivative		4,759.3
Due To Counterparty | Virgin Media | Cross-Currency Swap 3
Derivative [Line Items]
Notional amount of derivative		3,400.0
Due To Counterparty | UPC Holding | Cross-Currency Swap 4
Derivative [Line Items]
Notional amount of derivative		1,999.4
Due To Counterparty | UPC Holding | Cross-Currency Swap 5
Derivative [Line Items]
Notional amount of derivative		1,107.5
Due To Counterparty | UPC Holding | Cross-Currency Swap 6
Derivative [Line Items]
Notional amount of derivative		2,347.9
Due To Counterparty | UPC Holding | Cross-Currency Swap 7
Derivative [Line Items]
Notional amount of derivative		8,221.8
Due To Counterparty | UPC Holding | Cross-Currency Swap 8
Derivative [Line Items]
Notional amount of derivative		105,911.9
Due To Counterparty | UPC Holding | Cross-Currency Swap 9
Derivative [Line Items]
Notional amount of derivative		3,484.5
Due To Counterparty | UPC Holding | Cross-Currency Swap 10
Derivative [Line Items]
Notional amount of derivative		610.0
Due To Counterparty | Telenet | Cross-Currency Swap 11
Derivative [Line Items]
Notional amount of derivative		3,243.6
Due To Counterparty | Telenet | Cross-Currency Swap 12
Derivative [Line Items]
Notional amount of derivative		$ 1,600.0

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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X

- Definition

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.

+ References

No definition available.

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- Definition

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+ References

No definition available.

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