Note 1 - Basis of Presentation (Details Textual) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Feb. 23, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Number of Operating Segments		2
Number of Television Markets		113
Percent of US Television Households Reached		36.00%
Number of Television Markets with Top-Rated Stations		80
Number of Television Markets with First and/or Second Rated Stations		102
Increase (Decrease) in Contract with Customer, Liability		$ 7	$ 8
Proceeds from Sale of Machinery and Equipment		22	2
Reimbursement from Development Costs, Ownership Transferred		11	0
Accounts Receivable, Allowance for Credit Loss		32	$ 15		$ 16	$ 16
Wells Fargo Bank, N.A. [Member]
Accounts Receivable Securitization Program Maximum Capacity				$ 300
Proceeds from Accounts Receivable Securitization		300
Accounts Receivable Securitization, Unsold Receivables		277
Accounts Receivable Securitization, Total Receivables		577
Accounts Receivable Securitization, Charge for Discount		$ 9
Wells Fargo Bank, N.A. [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		100.00%
Diamond Sports Group, LLC [Member]
Accounts Receivable, Allowance for Credit Loss		$ 17
Atlanta Assembly Project [Member]
Total Reimbursement from Development Costs for Which Ownership is Transferred and Retained		38
Proceeds From Infrastructure Asset Project		27
Reimbursement from Development Costs, Ownership Retained		11
Increase (Decrease) in Contract with Customer, Liability		9
Proceeds from Sale of Machinery and Equipment		$ 18
Reimbursement from Development Costs, Ownership Transferred	$ 11