Debt and Capital Lease Obligations (Telenet SPE Notes Details of Borrowings) (Schedule) (Details)									12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2014 Telenet SPE Notes [Member] USD ($)	Dec. 31, 2013 Telenet SPE Notes [Member] USD ($)	Dec. 31, 2014 Telenet Finance Notes [Member] USD ($)	Dec. 31, 2014 Telenet Finance Notes [Member] EUR (€)	Dec. 31, 2014 Telenet Finance III Notes [Member] USD ($)	Dec. 31, 2014 Telenet Finance III Notes [Member] EUR (€)	Dec. 31, 2014 Telenet Finance IV Notes [Member] USD ($)	Dec. 31, 2014 Telenet Finance IV Notes [Member] EUR (€)	Dec. 31, 2014 6.25% Telenet Finance V Notes [Member] USD ($)	Dec. 31, 2014 6.25% Telenet Finance V Notes [Member] EUR (€)	Dec. 31, 2014 6.75% Telenet Finance V Notes [Member] USD ($)	Dec. 31, 2014 6.75% Telenet Finance V Notes [Member] EUR (€)
Debt Instrument [Line Items]
Stated interest rate of debt					6.375%	6.375%	6.625%	6.625%			6.25%	6.25%	6.75%	6.75%
Description of variable rate basis									EURIBOR	EURIBOR
Basis spread on variable rate									3.875%	3.875%
Principal amount outstanding	$ 44,612,200,000		$ 2,299,000,000		$ 605,000,000	€ 500,000,000	$ 363,000,000	€ 300,000,000	$ 484,000,000	€ 400,000,000	$ 544,500,000	€ 450,000,000	$ 302,500,000	€ 250,000,000
Estimated fair value	46,151,100,000	44,229,000,000	2,450,400,000	2,916,500,000	639,800,000		387,000,000		487,000,000		595,900,000		340,700,000
Carrying value	$ 44,611,400,000	$ 42,856,000,000	$ 2,299,000,000	$ 2,759,200,000	$ 605,000,000		$ 363,000,000		$ 484,000,000		$ 544,500,000		$ 302,500,000