Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt and Capital Lease Obligations (Unitymedia KabelBW Revolving Credit Facilities) (Narrative) (Details)	12 Months Ended					12 Months Ended
	Dec. 31, 2013 New Unitymedia KabelBW Revolving Credit Facility [Member]	Aug. 28, 2012 New Unitymedia KabelBW Revolving Credit Facility [Member] USD ($)	Aug. 28, 2012 New Unitymedia KabelBW Revolving Credit Facility [Member] EUR (€)	May 02, 2012 New Unitymedia KabelBW Revolving Credit Facility [Member] USD ($)	May 02, 2012 New Unitymedia KabelBW Revolving Credit Facility [Member] EUR (€)	Dec. 31, 2013 Unitymedia KabelBW Revolving Credit Facility [Member]	May 02, 2012 Unitymedia KabelBW Revolving Credit Facility [Member] USD ($)	May 02, 2012 Unitymedia KabelBW Revolving Credit Facility [Member] EUR (€)
Debt Instrument [Line Items]
Line of credit borrowing capacity		$ 465,400,000	€ 337,500,000	$ 430,900,000	€ 312,500,000		$ 110,300,000	€ 80,000,000
Description of variable rate basis	EURIBOR					EURIBOR
Basis spread on variable rate	3.25%					2.50%
Fee on unused portion of credit facility	1.25%					1.00%