Derivative Instruments (Net Cash Received (Paid) Related to Derivatives) (Schedule) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Derivative [Line Items]
Operating activities	$ 17.2	$ (137.8)
Total	(14.8)	(621.7)
Liberty Global Group [Member]
Derivative [Line Items]
Operating activities	9.7	(118.7)
Investing activities	0.0	2.6
Financing activities	(32.0)	(486.5)
Total	(22.3)	(602.6)
LiLAC Group [Member]
Derivative [Line Items]
Operating activities	7.5	(19.1)
Total	$ 7.5	$ (19.1)

Payments for (Proceeds from) Derivative Instrument, Operating Activities

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- Definition

Payments For Proceeds From Derivatives Continuing Operations

+ References

No definition available.

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- 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.

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- Definition

The net cash outflow or inflow from derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3505-108585

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- Definition

The net cash outflow or inflow from derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments.

+ References

No definition available.

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