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Capital Stock and Share-Based Compensation Plans - Narrative (Details)
 1 Months Ended 12 Months Ended
Jan. 07, 2021
$ / shares
shares
Nov. 30, 2025
shares
Dec. 31, 2025
USD ($)
director
classOfCommonShare
shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jun. 30, 2025
$ / shares
Mar. 31, 2024
Class of Stock [Line Items]              
Classes of common shares | classOfCommonShare     2        
Number of directors as a percentage     33.33%        
Share price | $ / shares           $ 2.94  
Undeclared cumulative dividends     $ 117,000,000        
Redemption value of preferred stock     $ 750,000,000        
Number of shares available for future stock compensation grants | shares     10,900,000        
Restricted stock units              
Class of Stock [Line Items]              
Total unrecognized compensation cost related to restricted stock, RSUs and performance shares     $ 20,400,000        
Weighted-average period of recognition, years     1 year 8 months 12 days        
Preferred Stock | Berkshire Hathaway | ION Media              
Class of Stock [Line Items]              
Number of shares purchased | shares 6,000            
Share price | $ / shares $ 100,000            
Preferred stock, redemption price, percent 105.00%            
Preferred stock, dividend rate, percentage         8.00%    
Preferred stock dividends         $ 48,000,000.0    
Dividend rate if previous dividends are not paid in cash, as a percentage             9.00%
Number of warrants | shares 23,100,000            
Exercise price of warrants | $ / shares $ 13            
Common stock, Class A              
Class of Stock [Line Items]              
Stock repurchased during period, value     $ 0 $ 0 $ 0    
Number of rights issued for each share of common stock owned | shares   1          
Exercisable stock rights, threshold percentage   10.00%          
Exercisable stock rights, discount on common stock (as a percent)   50.00%          
Minimum | Restricted stock units              
Class of Stock [Line Items]              
Vesting period of stock options     3 years        
Maximum              
Class of Stock [Line Items]              
Minimum number of directors up for election, on which common shareholders entitled to vote | director     3        
Maximum | Restricted stock units              
Class of Stock [Line Items]              
Vesting period of stock options     4 years