v3.25.1
Long-Term Debt - 2029 Senior Notes (Details) - USD ($)
$ in Millions
May 02, 2024
Mar. 31, 2025
Jun. 30, 2024
Jun. 26, 2019
Debt Instrument [Line Items]        
Debt instrument, face amount     $ 651.3  
Senior Notes Due 2029 | Senior Notes        
Debt Instrument [Line Items]        
Stated rate (as percent) 8.00%      
Debt instrument, face amount $ 306.4      
Redemption price 100.00%      
Debt instrument, unamortized discount   $ 14.1    
Senior Notes Due 2029 | Senior Notes | Cumulus Media New Holdings Inc.        
Debt Instrument [Line Items]        
Debt instrument, face amount $ 306.4      
Debt instrument, unamortized discount 16.6      
Senior Notes due 2026 | Senior Notes        
Debt Instrument [Line Items]        
Stated rate (as percent)       6.75%
Debt instrument, face amount 23.2     $ 500.0
Senior Notes due 2026 | Senior Notes | Cumulus Media New Holdings Inc.        
Debt Instrument [Line Items]        
Debt instrument, face amount $ 323.0