LONG-TERM DEBT - Schedule of Long-term Debt (Details) - USD ($)				3 Months Ended	12 Months Ended
	Dec. 27, 2017	Dec. 24, 2017	Nov. 30, 2017	Sep. 30, 2013	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jul. 10, 2017	Feb. 07, 2017
Debt Instrument [Line Items]
Total Consolidated Secured Debt					$ 13,283,883,000	$ 12,925,802,000
Total debt			$ 365,000,000		20,649,181,000	20,364,988,000
Long-term debt fees					(109,071,000)	(123,003,000)
Less: current portion					14,972,367,000	342,908,000
Total long-term debt					5,676,814,000	20,022,080,000
Maximum borrowing capacity					550,000,000
Draws on credit facilities					100,000,000	100,000,000	$ 350,000,000
Proceeds from long-term debt					156,000,000	6,856,000	$ 1,172,777,000
Term Loan
Debt Instrument [Line Items]
Total Consolidated Secured Debt					6,300,000,000	6,300,000,000
Receivables Based Credit Facility Due 2019
Debt Instrument [Line Items]
Total Consolidated Secured Debt					405,000,000	330,000,000
Credit facility term			3 years
Priority Guarantee Notes
Debt Instrument [Line Items]
Total Consolidated Secured Debt					6,570,361,000	6,274,815,000
Subsidiary Revolving Credit Facility Due 2018
Debt Instrument [Line Items]
Total Consolidated Secured Debt					0	0
Other Secured Subsidiary Debt
Debt Instrument [Line Items]
Total Consolidated Secured Debt					$ 8,522,000	$ 20,987,000
14.0% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest Rate					14.00%	14.00%
Legacy Notes
Debt Instrument [Line Items]
Total debt					$ 475,000,000	$ 475,000,000
10.0% Senior Notes Due 2018
Debt Instrument [Line Items]
Total debt					$ 47,482,000	$ 347,028,000
Interest Rate					10.00%	10.00%		10.00%
Subsidiary Senior Notes
Debt Instrument [Line Items]
Total debt					$ 5,300,000,000	$ 5,150,000,000
Other Subsidiary Debt
Debt Instrument [Line Items]
Total debt					24,615,000	27,954,000
Purchase accounting adjustments and original issue discount
Debt Instrument [Line Items]
Total debt					(136,653,000)	(166,961,000)
Senior Notes \| 14.0% Senior Notes Due 2021
Debt Instrument [Line Items]
Senior Notes					$ 1,763,925,000	1,729,168,000
Interest Rate					14.00%
Secured debt
Debt Instrument [Line Items]
Term loan			$ 300,000,000
Legacy Notes
Debt Instrument [Line Items]
Total debt					$ 475,000,000	$ 475,000,000
Legacy Notes \| 5.5% Senior Notes Due 2016
Debt Instrument [Line Items]
Interest Rate					5.50%	5.50%
iHeartCommunications
Debt Instrument [Line Items]
Proceeds from long-term debt			365,000,000
Credit facility term					3 years
iHeartCommunications \| 10.0% Senior Notes Due 2018
Debt Instrument [Line Items]
Total debt									$ 241,400,000
iHeartCommunications \| Secured debt
Debt Instrument [Line Items]
Term loan			300,000,000.0
Proceeds from secured debt			$ 300,000,000
iHeartCommunications \| Legacy Notes \| 5.5% Senior Notes Due 2016
Debt Instrument [Line Items]
Total debt					$ 57,100,000	$ 57,100,000
LIBOR \| iHeartCommunications
Debt Instrument [Line Items]
Basis spread on variable rate			4.75%
Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 75,000,000.0
Credit facility term				5 years
Outstanding under revolving credit facility		$ 405,000,000	$ 250,000,000		0
Revolving credit facility \| iHeartCommunications
Debt Instrument [Line Items]
Maximum borrowing capacity			250,000,000.0
Draws on credit facilities	$ 40,000,000	$ 40,000,000	$ 65,000,000
Outstanding under revolving credit facility					$ 405,000,000

iHeartCommunications, Inc. 10-K