v3.25.1
Long-Term Debt - 2029 Credit Agreement (Term Loan Due 2029) (Details) - USD ($)
$ in Millions
May 02, 2024
Mar. 31, 2025
Jun. 30, 2024
Debt Instrument [Line Items]      
Debt instrument, face amount     $ 651.3
Term Loan due 2026      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 1.2    
Term Loan due 2026 | Cumulus Media New Holdings Inc.      
Debt Instrument [Line Items]      
Debt instrument, face amount 328.3    
Term Loan due 2029      
Debt Instrument [Line Items]      
Debt instrument, face amount 311.8    
Stated rate (as percent)   9.30%  
Term Loan due 2029 | Cumulus Media New Holdings Inc.      
Debt Instrument [Line Items]      
Debt instrument, face amount 311.8    
Debt instrument, unamortized discount $ 16.5    
New Credit Agreement | Secured Overnight Financing Rate (SOFR) Floor      
Debt Instrument [Line Items]      
Basis spread on variable rate (as percent) 1.00%    
New Credit Agreement | Secured Overnight Financing Rate (SOFR)      
Debt Instrument [Line Items]      
Basis spread on variable rate (as percent) 5.00%    
New Credit Agreement | Alternative Base Rate      
Debt Instrument [Line Items]      
Basis spread on variable rate (as percent) 4.00%