FRESH START ACCOUNTING - Narrative (Details)		4 Months Ended	12 Months Ended
	May 01, 2019 USD ($) $ / shares shares	May 01, 2019 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) station $ / shares shares	May 02, 2019 USD ($)	Mar. 31, 2019	Dec. 31, 2018 USD ($) $ / shares shares
Debt Instrument [Line Items]
Number of shares retained (in shares) | shares	31,269,762
Accrued professional fees paid directly	$ 30,500,000
Unpaid professional fees	86,100,000
Funding of guarantor general unsecured recovery cash pool classified as restricted	17,500,000
Funding of guarantor general unsecured recovery cash pool at emergence classified as restricted	6,000,000
Funding of guarantor general unsecured recovery cash pool, amount reclassified to cash	3,400,000
Write-off of prepaid premium on insurance policy	2,300,000
Accrual for future reimbursement of discounts	1,900,000
Liabilities subject to compromise, accounts payable				$ 3,100,000
Accrued professional fees paid directly	21,200,000
Payment of professional fees through escrow account	9,260,000	$ 9,260,000
Finance leases and other debt, noncurrent	10,300,000	10,300,000
Cash paid to settle certain creditor claims	1,800,000
Common stock shares issued (in shares) | shares			145,727,707
Preferred stock, par value(in dollars per share) | $ / shares			$ 0.001			$ 0.001
Liabilities subject to compromise, adjustment to net deferred income tax liabilities	596,850,000	596,850,000
Deferred income tax liabilities	21,500,000	21,500,000
Operating loss carryforwards, federal and state	$ 114,900,000	$ 114,900,000
Number of securities called by warrants or rights (in shares) | shares	81,453,648	81,453,648
Employee related charges	$ 1,500,000	$ 1,500,000
Number of radio stations | station			854
Accrued Reorganization Items, Net			$ 400,000
Fair value adjustment	$ 2,240,900,000	$ 2,240,900,000
Operating lease weighted average discount rate	6.54%	6.54%	6.52%		12.44%
Fresh start adjustment to Operating lease right-of-use assets	$ 554,278,000	$ 554,278,000	$ 541,200,000
Operating lease right-of-use assets			881,762,000			$ 0
Finance lease, liability	900,000	$ 900,000
Accrued professional fees						$ 47,500,000
iHeart Operations, Inc.
Debt Instrument [Line Items]
Proceeds from issuance of preferred stock and preference stock	$ 60,000,000
Preferred stock, par value(in dollars per share) | $ / shares	$ 0.001	$ 0.001
iHeartCommunications, Inc.
Debt Instrument [Line Items]
Percentage of economic rights prior to reorganization	89.10%
Percentage of voting rights prior to reorganization	99.00%
Term Loan Facility
Debt Instrument [Line Items]
Secured debt	$ 3,500,000,000	$ 3,500,000,000
New Senior Secured Notes
Debt Instrument [Line Items]
Secured debt	$ 800,000,000	800,000,000
Debt instrument term	7 years
New Senior Unsecured Note
Debt Instrument [Line Items]
Unsecured Debt	$ 1,450,000,000	$ 1,450,000,000
Senior Notes | iHeartCommunications, Inc. | 6.375% Senior Secured Notes due 2026
Debt Instrument [Line Items]
Stated interest rate	6.375%	6.375%
Line of Credit | Asset-based Revolving Credit Facility Due 2023
Debt Instrument [Line Items]
Maximum borrowing capacity			450,000,000
Revolving Credit Facility | Line of Credit | Asset-based Revolving Credit Facility Due 2023
Debt Instrument [Line Items]
Maximum borrowing capacity			450,000,000
Property, Plant and Equipment
Debt Instrument [Line Items]
Property, plant and equipment, net	$ 182,900,000	$ 182,900,000
Software Technology Assets
Debt Instrument [Line Items]
Property, plant and equipment, net	$ 151,000,000	$ 151,000,000
Off-Market Favorable Lease
Debt Instrument [Line Items]
Operating lease right-of-use assets			$ 13,100,000
Class A Shares
Debt Instrument [Line Items]
Common stock shares issued (in shares) | shares	56,861,941	56,861,941	57,776,204			32,292,944
Class B Shares
Debt Instrument [Line Items]
Common stock shares issued (in shares) | shares	6,947,567	6,947,567	6,904,910			555,556
Licensing Agreements
Debt Instrument [Line Items]
Fair value adjustment	$ 44,900,000	$ 44,900,000
Customer Relationships
Debt Instrument [Line Items]
Fair value adjustment	$ 1,604,100,000	$ 1,604,100,000