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CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Apr. 02, 2015
Jan. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 03, 2015
Dec. 31, 2014
Aug. 09, 2010
Related Party Transaction [Line Items]                
Management fees rate     $ 15,000,000.0          
Management fees and reimbursable expenses     $ 15,200,000 $ 15,300,000 $ 15,400,000      
Common Class A                
Related Party Transaction [Line Items]                
Approved stock repurchase amount               $ 100,000,000.0
Remaining aggregate available under stock purchase program             $ 34,200,000  
CC Finco | Common Class A                
Related Party Transaction [Line Items]                
Shares purchased (in shares)   2,000,000            
Shares purchased $ 22,200,000 $ 20,400,000            
Additional shares purchased 2,172,946              
iHeart Communications Inc. | Common Class A                
Related Party Transaction [Line Items]                
Shares of CCOH's Class A Common Stock held (in shares)     10,726,917          
Collective holdings percentage (more than)     89.50%          
CCOH | Common Class B                
Related Party Transaction [Line Items]                
Contribution of shares by Clear Channel Holdings, Inc. (in shares)           100,000,000