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Derivative Instruments (Interest Rate Collars) (Schedule) (Details) - Interest Rate Collar [Member] € in Millions	Dec. 31, 2014 EUR (€)
January 2015 — January 2020 1135.0 EUR [Member] | UPC Broadband Holding [Member]
Derivative [Line Items]
Notional amount of derivative	€ 1,135.0
EURIBOR floor rate	1.00%
EURIBOR cap rate	3.54%
July 2017 650.0 EUR [Member] | Telenet International [Member]
Derivative [Line Items]
Notional amount of derivative	€ 650.0
EURIBOR floor rate	2.00%
EURIBOR cap rate	4.00%

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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X

- Details

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Namespace Prefix:
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X

- Details

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