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Cover - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Feb. 22, 2021
Jun. 30, 2020
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-38987    
Entity Registrant Name IHEARTMEDIA, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 26-0241222    
Entity Address, Address Line One 20880 Stone Oak Parkway    
Entity Address, City or Town San Antonio,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 78258    
City Area Code 210    
Local Phone Number 822-2828    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Bankruptcy Proceedings, Reporting Current true    
Entity Public Float     $ 506.1
Documents Incorporated by Reference Portions of the registrant’s Definitive Proxy Statement for the registrant’s 2021 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year ended December 31, 2020 are incorporated herein by reference in Part III of this Annual Report on Form 10-K.    
Amendment Flag false    
Entity Central Index Key 0001400891    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Common Class A      
Document Information [Line Items]      
Title of 12(b) Security Class A Common Stock, par value $0.001 per share    
Trading Symbol iHRT    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   110,923,534  
Common Class B      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   29,088,181  
Series A Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Series A Preferred Stock Purchase Rights    
Trading Symbol iHRT    
Security Exchange Name NASDAQ