Debt Instrument, Covenant, Maximum Leverage Ratio, Period Two

No definition available.

Name:	trco_DebtInstrumentCovenantMaximumLeverageRatioPeriodTwo
Namespace Prefix:	trco_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Long-term Debt Amount to Extend Maturity

+ References

No definition available.

+ Details

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

- Definition

Debt Instrument, Percent to Trigger Required Testing

+ References

No definition available.

+ Details

Name:	trco_DebtInstrumentPercenttoTriggerRequiredTesting
Namespace Prefix:	trco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Period of Outstanding Principal Amount Prior to Maturity

+ References

No definition available.

+ Details

Name:	trco_DebtInstrumentPeriodofOutstandingPrincipalAmountPriortoMaturity
Namespace Prefix:	trco_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Premium Payable on Voluntary Prepayments, Percent

+ References

No definition available.

+ Details

Name:	trco_DebtInstrumentPremiumPayableonVoluntaryPrepaymentsPercent
Namespace Prefix:	trco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Unamortized Discount Write-off on Extinguishment

+ References

No definition available.

+ Details

Name:	trco_DebtInstrumentUnamortizedDiscountWriteoffonExtinguishment
Namespace Prefix:	trco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Variable Rate Floor

+ References

No definition available.

+ Details

Name:	trco_DebtInstrumentVariableRateFloor
Namespace Prefix:	trco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument, unamortized discount and debt issuance costs

+ References

No definition available.

+ Details

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

- Definition

Loss on extinguishment and modification of debt, including the write-off of debt issuance costs, unamortized debt discounts and other transaction costs.

+ References

No definition available.

+ Details

Name:	trco_Lossonextinguishmentandmodificationofdebt
Namespace Prefix:	trco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Payment of debt issuance costs, deferred

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-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

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

+ Details

Name:	us-gaap_PaymentsOfDebtIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for cost incurred in the modification of term of existing debt agreement in order for the entity to achieve some advantage.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

+ Details

Name:	us-gaap_PaymentsOfDebtRestructuringCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_WriteOffOfDeferredDebtIssuanceCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=trco_SeniorSecuredCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=trco_TermBLoansFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_FederalFundsEffectiveSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=trco_AdjustedLondonInterbankOfferedRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=trco_TermCLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=trco_TermLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trco_AmendedSecuredCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trco_SeniorNotes5.875due2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Narrative (Details)			3 Months Ended		6 Months Ended
Debt - Narrative (Details)	Feb. 01, 2017 USD ($)	Jan. 27, 2017 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Jun. 24, 2015 USD ($)
Debt Instrument [Line Items]
Long-term debt			$ 3,032,273,000			$ 3,411,551,000
Debt discount paid			1,689,000	$ 622,000
Repayment of outstanding borrowings			584,245,000	6,960,000
Loss on extinguishment and modification of debt			(19,052,000)	$ 0
Senior Secured Credit Agreement
Debt Instrument [Line Items]
Standby letters of credit outstanding			22,000,000			23,000,000
Senior Secured Credit Agreement \| Term B Loans
Debt Instrument [Line Items]
Debt instrument, face amount		$ 600,000,000				2,343,000,000
Long-term debt			197,497,000			2,312,218,000
Debt instrument, unamortized discount and debt issuance costs			2,503,000			31,230,000
Senior Secured Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity under senior secured credit facility		$ 420,000,000				300,000,000
Revolving credit facility borrowings outstanding			0
Leverage ratio, not to exceed		5.25
Debt issuance costs		$ 2,000,000
Senior Secured Credit Agreement \| Revolving Credit Facility \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Base rate floor		0.00%
Basis spread on variable rate		3.00%
Senior Secured Credit Agreement \| Revolving Credit Facility \| Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Senior Secured Credit Agreement \| Revolving Credit Facility \| Adjusted LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Senior Secured Credit Agreement \| Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Senior Secured Credit Agreement \| Term C Loans
Debt Instrument [Line Items]
Long-term debt		$ 1,761,000,000	1,735,755,000			0
Premium payable on voluntary prepayments, percent		1.00%
Debt Instrument, Percent to Trigger Required Testing		35.00%
Discount issued		$ 4,000,000
Debt discount paid			13,000,000
Payment of debt issuance costs, deferred		$ 1,000,000
Debt instrument, unamortized discount and debt issuance costs			25,694,000
Senior Secured Credit Agreement \| Term C Loans \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Base rate floor		0.75%
Basis spread on variable rate		3.00%
Senior Secured Credit Agreement \| Term C Loans \| Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Senior Secured Credit Agreement \| Term C Loans \| Adjusted LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Senior Secured Credit Agreement \| Term C Loans \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Senior Secured Credit Agreement \| Term Loan Facility
Debt Instrument [Line Items]
Payments of Debt Restructuring Costs			12,000,000
Debt instrument, unamortized discount and debt issuance costs			28,000,000			31,000,000
Amended Secured Credit Facility
Debt Instrument [Line Items]
Loss on extinguishment and modification of debt			19,052,000
Amended Secured Credit Facility \| Term B Loans
Debt Instrument [Line Items]
Repayment of outstanding borrowings	$ 400,000,000
Write off of Deferred Debt Issuance Cost			6,000,000
Debt Instrument, Unamortized Discount Write-off on Extinguishment			1,000,000
Amended Secured Credit Facility \| Term Loan Facility
Debt Instrument [Line Items]
Debt issuance costs		$ 25,000,000
Discount issued		$ 6,000,000
5.875% Senior Notes due 2022
Debt Instrument [Line Items]
Debt Instrument, Period of Outstanding Principal Amount Prior to Maturity		91 days
5.875% Senior Notes due 2022 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount							$ 1,100,000,000
Long-term debt			$ 1,085,251,000			$ 1,084,563,000
Debt Instrument, Long-term Debt Amount to Extend Maturity		$ 600,000,000
Stated interest rate			5.875%			5.875%	5.875%
Debt issuance costs			$ 14,749,000			$ 15,437,000
Debt discount paid					$ 1,000,000