| Cover | Sep. 01, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 1, 2021 |
| Entity File Number | 001-38101 |
| Entity Registrant Name | WideOpenWest, Inc. |
| Entity Central Index Key | 0001701051 |
| Entity Tax Identification Number | 46-0552948 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 7887 East Belleview Avenue |
| Entity Address, Address Line Two | Suite 1000 |
| Entity Address, City or Town | Englewood |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80111 |
| City Area Code | 720 |
| Local Phone Number | 479-3500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | WOW |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
