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Note 3 - Acquisitions - Acquisitions (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Operating lease right of use asset $ 1  
Goodwill 1,466 $ 1,460
Other liabilities (1)  
Alaska Transactions [Member]    
Property and equipment 6  
Goodwill 6  
Broadcast licenses 5  
Other intangible assets 7  
Total $ 24