Capital Stock and Share-Based Compensation Plans - Narrative (Details) $ / shares in Units, shares in Thousands		12 Months Ended
	Jan. 07, 2021 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) director classOfCommonShare shares	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2023 $ / shares	May 14, 2021 USD ($)	Feb. 28, 2020 USD ($)
Class of Stock [Line Items]
Classes of common shares | classOfCommonShare		2
Share price | $ / shares					$ 9.15
Preferred stock dividends		$ 48,000,000	$ 48,000,000	$ 47,067,000
Number of shares available for future stock compensation grants | shares		7,500
ION Media
Class of Stock [Line Items]
Exercise price of warrants | $ / shares	$ 13
Berkshire Hathaway | Level 3
Class of Stock [Line Items]
Fair value of warrants	$ 181,000,000					$ 280,000,000
Maximum
Class of Stock [Line Items]
Minimum number of directors up for election, on which common shareholders entitled to vote | director		3
Preferred Stock | Berkshire Hathaway | ION Media
Class of Stock [Line Items]
Number of shares purchased | shares	6
Share price | $ / shares	$ 100,000
Preferred stock, redemption price, percent	105.00%
Preferred stock, dividend rate, percentage	8.00%
Dividend rate if previous dividends are not paid in cash, as a percentage	9.00%
Preferred stock dividends		$ 48,000,000	48,000,000
Number of warrants | shares	23,100
Exercise price of warrants | $ / shares	$ 13
Common stock, Class A
Class of Stock [Line Items]
Stock repurchase program, authorized amount							$ 100,000,000
Stock repurchased during period, value		0	$ 0	$ 0
Common stock, Class A | ION Media
Class of Stock [Line Items]
Number of warrants | shares	23,100
Restricted stock units
Class of Stock [Line Items]
Total unrecognized compensation cost related to restricted stock, RSUs and performance shares		$ 24,700,000
Weighted-average period of recognition, years		1 year 10 months 24 days
Restricted stock units | Minimum
Class of Stock [Line Items]
Vesting period of stock options		3 years
Restricted stock units | Maximum
Class of Stock [Line Items]
Vesting period of stock options		4 years