Acquisitions (Details 6) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Unaudited pro forma results
Revenue	$ 1,199.0	$ 1,132.5
Net income (loss)	(155.6)	(138.8)
Mid-Michigan Assets and Knology, Inc.
Unaudited pro forma results
Revenue	274.3
Net income (loss)	$ 20.4

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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