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LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025
Surety bonds
Guarantor Obligations [Line Items]
Guarantee obligations	$ 42.6
Bank Guarantees
Guarantor Obligations [Line Items]
Guarantee obligations	10.9
Bank Guarantees Backed by Cash Collateral
Guarantor Obligations [Line Items]
Guarantee obligations	2.7
Revolving Credit Facility
Guarantor Obligations [Line Items]
Letters of credit outstanding	7.0
Line of credit, excess availability	$ 93.0
Clear Channel Outdoor Holdings 7.750% Senior Notes \| Senior Notes
Guarantor Obligations [Line Items]
Stated interest rate (as a percent)	7.75%
Clear Channel Outdoor Holdings 7.500% Senior Notes \| Senior Notes
Guarantor Obligations [Line Items]
Stated interest rate (as a percent)	7.50%
Revolving Credit Facility \| Receivables-Based Credit Facility \| Line of Credit
Guarantor Obligations [Line Items]
Letters of credit outstanding	$ 87.6
Line of credit, excess availability	112.4
Credit facility maximum borrowing capacity	$ 250.0	$ 200.0
Long term debt term (in years)	5 years
Level 1
Guarantor Obligations [Line Items]
Aggregate market value of debt	$ 5,300.0		$ 5,300.0