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Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Feb. 23, 2023 USD ($)
Number of Television Markets | 113 |  |  |
Percent of US Television Households Reached | 37.00% |  |  |
Number of Television Markets with Top-Rated Stations | 78 |  |  |
Number of Television Markets with First and/or Second Rated Stations | 99 |  |  |
Number of Television Markets, Telemundo Affiliate Group | 44 |  |  |
Number of Hispanic Television Households | 1,500,000 |  |  |
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount | $ 25 | $ 29 | $ 18 |
Accounts Receivable, Credit Loss Expense (Reversal) | 2 | 21 | 1 |
Accounts Receivable, Allowance for Credit Loss | $ 15 | 17 | $ 16 |
Asset Retirement Obligation |  | 4 |  |
Wells Fargo Bank, N.A. [Member] |  |  |  |
Accounts Receivable Securitization Program Maximum Capacity |  |  |  | $ 300
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |  |
Proceeds from Accounts Receivable Securitization |  | 300 |  |
Accounts Receivable Securitization, Unsold Receivables | $ 337 | 296 |  |
Accounts Receivable Securitization, Total Receivables | $ 597 | 596 |  |
Accounts Receivable Securitization, Charge for Discount |  | 9 |  |
Diamond Sports Group, LLC [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss |  | $ 17 |  |
Services Sector [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |
Concentration Risk, Percentage | 23.00% | 27.00% | 28.00% |
Automotive [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |
Concentration Risk, Percentage | 20.00% | 20.00% | 17.00% |

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