Note 3 - Acquisitions and Divestitures - Transaction Related Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2019
Transaction related expenses	$ 81	$ 79
Broadcast Licenses [Member]
Transaction related expenses	3	45
Corporate and Administrative [Member]
Transaction related expenses	71	34
Miscellaneous (Income) Expense, Net [Member]
Transaction related expenses	7
Legal, Consulting and Other Professional Fees [Member]
Transaction related expenses	80	24
Termination of Sales Representation Agreements [Member]
Transaction related expenses	$ 1	34
Incentive Compensation and Severance Costs [Member]
Transaction related expenses		$ 21