v3.26.1
Debt - 2029 Credit Agreement (Term Loan Due 2029) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 30, 2026
May 02, 2024
Term Loan due 2026      
Debt Instrument [Line Items]      
Debt instrument, face amount     $ 1.2
Term Loan due 2026 | Secured Debt      
Debt Instrument [Line Items]      
Stated rate (as percent)   7.54%  
Term Loan due 2026 | Cumulus Media New Holdings Inc.      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 328.3   328.3
Term Loan due 2029:      
Debt Instrument [Line Items]      
Debt instrument, face amount     311.8
Term Loan due 2029: | Secured Debt      
Debt Instrument [Line Items]      
Stated rate (as percent) 8.93%    
Term Loan due 2029: | Cumulus Media New Holdings Inc.      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 311.8   $ 311.8