Derivative Instruments (Interest Rate Caps) (Schedule) (Details) € in Millions	Jun. 30, 2016 EUR (€)
Interest Rate Cap [Member] | LGE Financing [Member]
Derivative [Line Items]
Notional amount of derivative	€ 735.0
Maximum rate	7.00%
Interest Rate Cap [Member] | Telenet International [Member]
Derivative [Line Items]
Notional amount of derivative	€ 50.0
Maximum rate	4.50%
December 2017 0.4 EUR 6.50 Percent [Member] | Telenet NV [Member]
Derivative [Line Items]
Notional amount of derivative	€ 0.4
Maximum rate	6.50%
December 2017 0.4 EUR 5.50 Percent [Member] | Telenet NV [Member]
Derivative [Line Items]
Notional amount of derivative	€ 0.4
Maximum rate	5.50%
October 2016 - January 2022 258.8 USD [Member] | Liberty Puerto Rico [Member]
Derivative [Line Items]
Notional amount of derivative	€ 258.8
Maximum rate	3.50%
January 2019 - July 2023 177.5 USD [Member] | Liberty Puerto Rico [Member]
Derivative [Line Items]
Notional amount of derivative	€ 177.5
Maximum rate	3.50%
Interest Rate Cap Sold [Member] | UPC Broadband Holding [Member]
Derivative [Line Items]
Notional amount of derivative	€ 735.0
Maximum rate	7.00%