v3.25.2
Capital Stock (Details)
$ / shares in Units, shares in Thousands, $ in Millions
Jan. 07, 2021
$ / shares
shares
Jun. 30, 2025
USD ($)
director
classOfCommonShare
Class of Stock [Line Items]    
Classes of common shares | classOfCommonShare   2
Minimum number of directors up for election to entitle shareholders to vote | director   3
Percentage of directors up for election if more than minimum number   33.33%
Undeclared cumulative dividends | $   $ 85.7
Redemption value of preferred stock | $   $ 718.0
Preferred stock | Berkshire Hathaway | ION Media    
Class of Stock [Line Items]    
Preferred shares issued (in shares) | shares 6  
Face value of preferred shares (in dollars per share) | $ / shares $ 100,000  
Preferred shares redemption price, as a percent 105.00%  
Preferred stock dividend rate if dividends not paid in cash 9.00%  
Common stock, Class A | Berkshire Hathaway    
Class of Stock [Line Items]    
Number of shares purchasable by warrant (up to) (in shares) | shares 23,100  
Exercise right of warrants (in dollars per share) | $ / shares $ 13