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Investments Cost Method Investments (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 0 Months Ended
Jul. 29, 2011
Mar. 29, 2015
Jul. 29, 2008
Oct. 27, 2009
Dec. 28, 2014
Jan. 01, 2018
New Cubs LLC | Payment Guarantee            
Line of Credit Facility [Line Items]            
Guarantor maximum exposure       $ 699us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_PaymentGuaranteeMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= trco_NewCubsLLCMember
   
Newsday LLC | Indemnification Agreement            
Line of Credit Facility [Line Items]            
Guarantor maximum exposure   425us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_IndemnificationGuaranteeMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= trco_NewsdayLLCMember
650us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_IndemnificationGuaranteeMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= trco_NewsdayLLCMember
  425us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_IndemnificationGuaranteeMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= trco_NewsdayLLCMember
 
Reduction in Maximum Indemnification Amount after Third Anniversary 120trco_GuarantorObligationsIncreaseDecreaseofMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_IndemnificationGuaranteeMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= trco_NewsdayLLCMember
         
Reduction in Maximum Indemnification Amount per year after Third Anniversary until January 1, 2018   35trco_GuarantorObligationsIncreaseDecreaseofMaximumExposureperYear
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_IndemnificationGuaranteeMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= trco_NewsdayLLCMember
       
Scenario, Forecast | Newsday LLC | Indemnification Agreement            
Line of Credit Facility [Line Items]            
Guarantor maximum exposure           0us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_IndemnificationGuaranteeMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= trco_NewsdayLLCMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
Newsday Holdings LLC and Newsday LLC [Member] | Secured Debt            
Line of Credit Facility [Line Items]            
Line of Credit Assumed     $ 650us-gaap_ProceedsFromLinesOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_SecuredDebtMember
/ dei_LegalEntityAxis
= trco_NewsdayHoldingsLLCandNewsdayLLCMember