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Note 3 - Acquisitions - Acquisitions (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Operating lease right of use asset $ 1    
Goodwill 1,466 $ 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