Debt and Capital Lease Obligations (Unitymedia KabelBW Revolving Credit Facilities) (Details)	3 Months Ended
	Sep. 30, 2014 Old Unitymedia KabelBW Revolving Credit Facilities [Member] USD ($)	Sep. 30, 2014 Old Unitymedia KabelBW Revolving Credit Facilities [Member] EUR (€)	Sep. 30, 2014 UM Super Senior Secured Facility [Member] USD ($)	Sep. 30, 2014 UM Super Senior Secured Facility [Member] EUR (€)	Sep. 30, 2014 UM Super Senior Secured Facility [Member] EURIBOR [Member]	Sep. 30, 2014 UM Senior Secured Facility [Member] USD ($)	Sep. 30, 2014 UM Senior Secured Facility [Member] EUR (€)	Sep. 30, 2014 UM Senior Secured Facility [Member] EURIBOR [Member]
Debt Instrument [Line Items]
Extinguishment of debt	$ 426,200,000	€ 337,500,000
Principal amount of debt			$ 101,000,000	€ 80,000,000		$ 530,400,000	€ 420,000,000
Basis spread on variable rate					2.25%			2.75%
Fee on unused portion of credit facility			0.90%	0.90%		1.10%	1.10%