Debt - Narrative (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Senior Secured Credit Agreement
Debt Instrument [Line Items]
Standby letters of credit outstanding	$ 20,000,000	$ 20,000,000
Senior Secured Credit Agreement \| Term C Loans
Debt Instrument [Line Items]
Debt Instrument, Face Amount	1,666,000,000	1,666,000,000
Debt instrument, unamortized discount and debt issuance costs	16,565,000	18,305,000
Senior Secured Credit Agreement \| Term B Loans
Debt Instrument [Line Items]
Debt Instrument, Face Amount	190,000,000	190,000,000
Debt instrument, unamortized discount and debt issuance costs	952,000	1,268,000
Senior Secured Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility borrowings outstanding	0	0
Borrowing capacity under senior secured credit facility	338,000,000	338,000,000
Senior Secured Credit Agreement \| Term Loan Facility
Debt Instrument [Line Items]
Debt instrument, unamortized discount and debt issuance costs	18,000,000	$ 20,000,000
5.875% Senior Notes due 2022 \| Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,100,000,000
Stated interest rate	5.875%	5.875%
Debt issuance costs	$ 8,478,000	$ 9,861,000

Debt instrument, unamortized discount and debt issuance costs

No definition available.

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Namespace Prefix:	trco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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

+ References

+ Details

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03(16))
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

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.

+ References

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