Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing and discontinued operations.

No definition available.

Name:	wow_IncomeTaxExpenseBenefitIncludingDiscontinuedOperations
Namespace Prefix:	wow_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Income Taxes - (Benefit) Expense (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
Income Taxes - (Benefit) Expense (Details) $ in Millions	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 item
Income Taxes
Income tax (benefit) expense \| $	$ 0.4	$ 204.6	$ 4.5	$ 208.3
Deferred tax (expense) benefit
Number of service areas sold \| item					5