Derivative Instruments (Cross-currency Interest Rate Swaps) (Schedule) (Details) (Cross-currency Interest Rate Swaps [Member]) In Millions, unless otherwise specified		12 Months Ended							12 Months Ended												12 Months Ended
	Dec. 31, 2013 Due From Counterparty [Member] January 2021 500.0 USD 308.9 GBP [Member] Virgin Media Investment Holdings Limited [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] July 2018 525.0 USD 396.3 EUR [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] September 2014 to January 2020 327.5 USD 249.5 EUR [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] January 2015 300.0 USD 226.5 EUR [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] December 2016 296.6 USD 219.8 EUR [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] December 2014 to July 2018 200.0 USD 151.0 EUR [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] January 2015 - July 2018 100.0 USD 75.4 EUR [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] November 2019 250Usd 226.8Chf [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] January 2020 225.0 USD 206.3 CHF [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] December 2014 340Usd 181322Clp [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] December 2016 201.5 USD 489.3 RON [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] December 2014 134.2 USD 107800.0 CLP [Member] UPC Broadband Holding [Member] USD ($)	Dec. 31, 2013 Due From Counterparty [Member] September 2014 441.8 USD 244508.6 CLP [Member] [Member] VTR GlobalCom [Member] USD ($)	Dec. 31, 2013 Due To Counterparty [Member] January 2021 500.0 USD 308.9 GBP [Member] Virgin Media Investment Holdings Limited [Member] GBP (£)	Dec. 31, 2013 Due To Counterparty [Member] July 2018 525.0 USD 396.3 EUR [Member] UPC Broadband Holding [Member] EUR (€)	Dec. 31, 2013 Due To Counterparty [Member] September 2014 to January 2020 327.5 USD 249.5 EUR [Member] UPC Broadband Holding [Member] EUR (€)	Dec. 31, 2013 Due To Counterparty [Member] January 2015 300.0 USD 226.5 EUR [Member] UPC Broadband Holding [Member] EUR (€)	Dec. 31, 2013 Due To Counterparty [Member] December 2016 296.6 USD 219.8 EUR [Member] UPC Broadband Holding [Member] EUR (€)	Dec. 31, 2013 Due To Counterparty [Member] December 2014 to July 2018 200.0 USD 151.0 EUR [Member] UPC Broadband Holding [Member] EUR (€)	Dec. 31, 2013 Due To Counterparty [Member] January 2015 - July 2018 100.0 USD 75.4 EUR [Member] UPC Broadband Holding [Member] EUR (€)	Dec. 31, 2013 Due To Counterparty [Member] November 2019 250Usd 226.8Chf [Member] UPC Broadband Holding [Member] CHF	Dec. 31, 2013 Due To Counterparty [Member] January 2020 225.0 USD 206.3 CHF [Member] UPC Broadband Holding [Member] CHF	Dec. 31, 2013 Due To Counterparty [Member] December 2014 340Usd 181322Clp [Member] UPC Broadband Holding [Member] CLP	Dec. 31, 2013 Due To Counterparty [Member] December 2016 201.5 USD 489.3 RON [Member] UPC Broadband Holding [Member] RON	Dec. 31, 2013 Due To Counterparty [Member] December 2014 134.2 USD 107800.0 CLP [Member] UPC Broadband Holding [Member] CLP	Dec. 31, 2013 Due To Counterparty [Member] September 2014 441.8 USD 244508.6 CLP [Member] [Member] VTR GlobalCom [Member] CLP
Derivative [Line Items]
Derivative, Notional Amount	$ 500.0	$ 525.0	$ 327.5	$ 300.0	$ 296.6	$ 200.0	$ 100.0	$ 250.0	$ 225.0	$ 340.0	$ 201.5	$ 134.2	$ 441.8	£ 308.9	€ 396.3	€ 249.5	€ 226.5	€ 219.8	€ 151.0	€ 75.4	226.8	206.3	181,322.0	489.3	107,800.0	244,508.6
Derivative Interest Rate Referenced		6 mo. LIBOR	6 mo. LIBOR	6 mo. LIBOR	6 mo. LIBOR	6 mo. LIBOR	6 mo. LIBOR		6 mo. LIBOR	6 mo. LIBOR	6 mo. LIBOR	6 mo. EURIBOR	6 mo. LIBOR	6 mo. GBP LIBOR							6 mo. CHF LIBOR
Derivative Interest Rate Above Referenced Rate														1.94%	1.99%	4.92%	1.75%	3.50%	3.00%	1.75%	5.01%	4.81%	1.75%	3.50%	2.00%	3.00%
Derivative Interest Rate	5.25%							7.25%							6.25%	7.52%	5.78%	6.75%	7.31%	5.77%		5.44%	8.76%	14.01%	10.00%	11.16%