Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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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