Income Tax Examination, Estimate of Possible Interest

No definition available.

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

- Definition

Income Tax Examination, Estimate of Possible Penalties

+ References

No definition available.

+ Details

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

- Definition

Income Tax Examination, Estimate of Possible Taxes

+ References

No definition available.

+ Details

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

- Definition

Investment Owned, Percent of Owned by Third Parties

+ References

No definition available.

+ Details

Name:	trco_InvestmentOwnedPercentofOwnedbyThirdParties
Namespace Prefix:	trco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Investment Ownership Percentage

+ References

No definition available.

+ Details

Name:	trco_InvestmentOwnershipPercentage
Namespace Prefix:	trco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments).

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredTaxLiabilitiesInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_IncomeTaxContingencyLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Estimated amount of loss resulting from an adverse tax position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

+ Details

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

- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

+ Details

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

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=trco_CEVLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TaxPeriodAxis=us-gaap_TaxYear2009Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Income Taxes - Newsday and Chicago Cubs Transactions (Details) - CEV LLC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Aug. 21, 2018	Dec. 31, 2017	Oct. 27, 2009
Income Tax Contingency [Line Items]
Ownership percentage in common stock by third party				95.00%
Ownership percentage in common stock		5.00%		5.00%
Tax Year 2009
Income Tax Contingency [Line Items]
IRS proposed tax	$ 182
IRS proposed gross valuation misstatement penalty	73
After-tax interest on proposed tax and penalty	76
Estimated federal income taxes before interest and penalties	225
Income taxes paid	85
Deferred tax liability	$ 64		$ 96