Subsequent Events (Details) (USD $) In Millions, unless otherwise specified		0 Months Ended
Jul. 17, 2012 Senior Notes	Apr. 01, 2014 Subsequent Events Maximum	Apr. 01, 2014 Subsequent Events Additional Senior Notes
Subsequent events
Face amount	$ 725.0		$ 100.0
Interest rate (as a percent)			10.25%
Debt issued as a percentage of par value			113.00%
Period for exchange offer for the additional notes under registration rights agreement		270 days
Additional interest expense on the additional Notes (as a percent)		0.50%

Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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 210.5-02.22(a)(1))

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

+ Details

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

- Details

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

- Definition

Represents the additional interest expense on the additional notes upon exchange of notes after due date as prescribed under law.

+ References

No definition available.

+ Details

Name:	wowf_DebtInstrumentAdditionalInterestExpensesOnAdditionalNotesUponExchangeOfNotesAfterDueDateUnderRegistrationRightsAgreement
Namespace Prefix:	wowf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of debt issued as a percentage of its par value.

+ References

No definition available.

+ Details

Name:	wowf_DebtInstrumentIssuanceAsPercentageOfParValue
Namespace Prefix:	wowf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	wowf_DebtInstrumentPeriodToConsummateExchangeOfferAfterIssueDateOfAdditionalNotesUnderRegistrationRightsAgreement
Namespace Prefix:	wowf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration