Note 1 - Basis of Presentation (Details Textual) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	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	$ 10	$ 6
Proceeds from Sale of Machinery and Equipment	8	0
Reimbursement from Development Costs, Ownership Transferred	11	0
Accounts Receivable, Allowance for Credit Loss	31	$ 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	297
Accounts Receivable Securitization, Total Receivables	597
Accounts Receivable Securitization, Charge for Discount	9
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	26
Proceeds From Infrastructure Asset Project	15
Reimbursement from Development Costs, Ownership Retained	11
Increase (Decrease) in Contract with Customer, Liability	9
Proceeds from Sale of Machinery and Equipment	6
Reimbursement from Development Costs, Ownership Transferred	$ 11