LONG-TERM DEBT - Schedule of Outstanding Priority Guarantee Notes And Subsidiary Senior Notes (Details) - USD ($) $ in Thousands	Mar. 06, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Interest Rate		8.75%
Total Priority Guarantee Notes		$ 3,882	$ 13,283,883
Total Legacy Notes		$ 20,472,917	20,649,181
10.625% Priority Guarantee Notes due 2023
Debt Instrument [Line Items]
Interest Rate		10.625%
Priority Guarantee Notes
Debt Instrument [Line Items]
Total Priority Guarantee Notes		$ 6,570,361	$ 6,570,361
Priority Guarantee Notes | 9.0% Priority Guarantee Notes due 2019
Debt Instrument [Line Items]
Interest Rate		9.00%	9.00%
Total Priority Guarantee Notes		$ 1,999,815	$ 1,999,815
Priority Guarantee Notes | 9.0% Priority Guarantee Notes due 2021
Debt Instrument [Line Items]
Interest Rate		9.00%	9.00%
Total Priority Guarantee Notes		$ 1,750,000	$ 1,750,000
Priority Guarantee Notes | 11.25% Priority Guarantee Notes due 2021
Debt Instrument [Line Items]
Interest Rate		11.25%	11.25%
Total Priority Guarantee Notes		$ 870,546	$ 870,546
Priority Guarantee Notes | 9.0% Priority Guarantee Notes due 2022
Debt Instrument [Line Items]
Interest Rate		9.00%	9.00%
Total Priority Guarantee Notes		$ 1,000,000	$ 1,000,000
Priority Guarantee Notes | 10.625% Priority Guarantee Notes due 2023
Debt Instrument [Line Items]
Interest Rate		10.625%	10.625%
Total Priority Guarantee Notes		$ 950,000	$ 950,000
Subsidiary Senior Notes
Debt Instrument [Line Items]
Total Legacy Notes		5,300,000	5,300,000
Subsidiary Senior Notes | Total CCWH Notes
Debt Instrument [Line Items]
Total Legacy Notes		$ 4,925,000	$ 4,925,000
Subsidiary Senior Notes | 6.5% Series A Senior Notes Due 2022
Debt Instrument [Line Items]
Interest Rate		6.50%	6.50%
Total Legacy Notes		$ 735,750	$ 735,750
Subsidiary Senior Notes | 6.5% Series B Senior Notes Due 2022
Debt Instrument [Line Items]
Interest Rate		6.50%	6.50%
Total Legacy Notes		$ 1,989,250	$ 1,989,250
Subsidiary Senior Notes | 7.625% Series A Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Interest Rate		7.625%	7.625%
Total Legacy Notes		$ 275,000	$ 275,000
Subsidiary Senior Notes | 7.625% Series B Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Interest Rate		7.625%	7.625%
Total Legacy Notes		$ 1,925,000	$ 1,925,000
Subsidiary Senior Notes | 8.75% Senior Notes Due 2020
Debt Instrument [Line Items]
Interest Rate		8.75%	8.75%
Total Legacy Notes		$ 375,000	$ 375,000
Subsidiary of iHeartCommunications | Priority Guarantee Notes
Debt Instrument [Line Items]
Total Priority Guarantee Notes		$ 180,800
Scenario, Forecast | Subsidiary Senior Notes | 7.625% Series A Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Redemption of notes	$ 275,000
Scenario, Forecast | Subsidiary Senior Notes | 7.625% Series B Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Redemption of notes	1,925,000
Scenario, Forecast | Subsidiary Senior Notes | New CCWH Subordinated Notes
Debt Instrument [Line Items]
Total Legacy Notes	$ 2,235,000