Note 10 - Income Taxes - Significant Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax liabilities:
Net book value of property and equipment	$ 143	$ 146
Broadcast licenses, goodwill and other intangible assets	1,363	1,373
Other	5	0
Total deferred tax liabilities	1,511	1,519
Deferred tax assets:
Liability for accrued bonus	11	9
State and local operating loss carryforwards	10	24
Interest expense limitation	17	4
Other	29	33
Total deferred tax assets	67	70
Valuation allowance for deferred tax assets	(10)	(22)
Net deferred tax assets	57	48
Deferred tax liabilities, net of deferred tax assets	$ 1,454	$ 1,471