XML 57 R46.htm IDEA: XBRL DOCUMENT v3.21.2
Restricted Cash - Narrative (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Dec. 30, 2020
Debt Instrument [Line Items]      
Cash restricted for pending acquisition $ 0 $ 1,050,000,000  
ION Media      
Debt Instrument [Line Items]      
Cash restricted for pending acquisition   $ 1,100,000,000  
Senior 3.875% Notes Due 2029 | Senior Notes      
Debt Instrument [Line Items]      
Debt face value     $ 550,000,000
Senior unsecured notes, due in 2031 | Senior Notes      
Debt Instrument [Line Items]      
Debt face value     $ 500,000,000