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Other matters (Details) $ in Millions			1 Months Ended				3 Months Ended		6 Months Ended
	Aug. 08, 2022 letter lawsuit	Jul. 30, 2018 defendant	Jan. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) agreement	Jun. 30, 2019 defendant	Dec. 13, 2018 defendant	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Intangible Contract Asset
Business Acquisition [Line Items]
Gross			$ 20.8
Intangible asset useful life			2 years
MadHive
Business Acquisition [Line Items]
Number of renewed existing commercial agreements | agreement				2
Equity And Debt Investment | Affiliated Entity
Business Acquisition [Line Items]
Expenses incurred with related party							$ 29.9	$ 18.5	$ 55.9	$ 42.4
Accounts payable and accrued liabilities with related party				$ 8.9			$ 9.0		$ 9.0
Clay, Massey & Associates, P.C. v. Gray Television
Business Acquisition [Line Items]
Number of other broadcasters settling DOJ complaint (defendant) | defendant		16			4
Settled litigation
Business Acquisition [Line Items]
Number of other broadcasters settling DOJ complaint (defendant) | defendant					4	7
Pending Litigation | Merger Related Lawsuits | Subsequent Event
Business Acquisition [Line Items]
Number of lawsuit filed | lawsuit	7
Number of demand letter received | letter	4
Loss Contingency, Pending Claims, Number | lawsuit	1

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