Debt and Capital Lease Obligations (UPC Broadband Holding Bank Facility) (Details)	1 Months Ended					6 Months Ended												6 Months Ended		3 Months Ended	6 Months Ended	1 Months Ended		6 Months Ended
	Jan. 31, 2014 UPC Broadband Holding Bank Facility R, S, AE [Member] USD ($)	Jan. 31, 2014 UPC Broadband Holding Bank Facility R, S, AE [Member] EUR (€)	Apr. 30, 2014 UPC Holding Senior Notes 9.875 Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility [Member] EUR (€)	Jun. 30, 2014 UPC Broadband Holding Bank Facility Q Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility Q Debt [Member] EUR (€)	Jun. 30, 2014 UPC Broadband Holding Bank Facility V Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility V Debt [Member] EUR (€)	Jun. 30, 2014 UPC Broadband Holding Bank Facility Y Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility Y Debt [Member] EUR (€)	Jun. 30, 2014 UPC Broadband Holding Bank Facility Z Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AC Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AD Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AG Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AH Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AH Debt [Member] EUR (€)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AI Debt [Member] USD ($)	Jun. 30, 2014 Elimination of Facilities V, Y, Z, AC and AD in Consolidation [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AF Debt [Member] USD ($)	Jun. 30, 2014 UPC Broadband Holding Bank Facility AF Debt [Member]	Jan. 31, 2014 VTR Senior Secured Notes [Member] USD ($)	Jan. 31, 2014 VTR Senior Secured Notes [Member] Secured Debt [Member] USD ($)	Jun. 30, 2014 EURIBOR [Member] UPC Broadband Holding Bank Facility Q Debt [Member]	Jun. 30, 2014 EURIBOR [Member] UPC Broadband Holding Bank Facility AG Debt [Member]	Jun. 30, 2014 EURIBOR [Member] UPC Broadband Holding Bank Facility AI Debt [Member]	Jun. 30, 2014 London Interbank Offered Rate (LIBOR) [Member] UPC Broadband Holding Bank Facility AH Debt [Member]
Debt Instrument [Line Items]
Interest rate			9.875%					7.625%	7.625%	6.375%	6.375%	6.625%	7.25%	6.875%								6.875%
Basis spread on variable rate																								2.75%	3.75%	3.25%	2.50%
Line of credit borrowing capacity							€ 30,000,000		€ 500,000,000		€ 750,000,000	$ 1,000,000,000	$ 750,000,000	$ 750,000,000	$ 1,554,400,000		€ 1,305,000,000	$ 1,016,200,000
Unused borrowing capacity				1,336,600,000		41,100,000		0		0		0	0	0	0	0		1,295,500,000	0
Outstanding principal amount				3,521,300,000		0		684,500,000		1,026,800,000		1,000,000,000	750,000,000	750,000,000	2,123,700,000	1,301,800,000		95,800,000	(4,211,300,000)
Unused borrowing capacity considering limitations				1,210,400,000	884,100,000
Unused borrowing capacity, considering limitations, after compliance reporting requirements				1,302,800,000	951,600,000
Fee on unused portion of credit facility						0.75%	0.75%											1.30%
Line of credit interest rate description																					LIBOR
LIBOR interest rate floor																				0.75%	0.75%
Principal amount of debt			400,000,000																			1,400,000,000.0
Proceeds from issuance of secured debt																							1,375,000,000
Cash received from subsidiary to repay debt	355,300,000	253,800,000
Payments for settlement of derivative instrument	13,000,000	9,300,000
Write off of deferred debt issuance cost			4,400,000																	4,400,000		7,200,000
Gains (losses) on extinguishment of debt			(41,500,000)																	(9,300,000)
Write-off of unamortized debt discounts			$ 17,400,000																	$ 4,900,000