CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Detail) - USD ($)		1 Months Ended	12 Months Ended
	Apr. 02, 2015	Jan. 31, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	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			$ 2,900,000	$ 15,200,000	$ 15,300,000
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			89.10%
CCOH | Common Class B
Related Party Transaction [Line Items]
Contribution of shares by Clear Channel Holdings, Inc. (in shares)						100,000,000