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Acquisitions, investments and dispositions - Additional Information (Details) (USD $)
1 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Aug. 31, 2014
company
Jun. 29, 2014
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Apr. 01, 2014
Mar. 30, 2014
Jul. 31, 2014
station
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Proceeds from sale of assets   $ 407,500,000gci_ProceedsFromSaleOfAssets            
Escrow deposit disbursement related to London Broadcasting Company television stations acquisition     134,908,000gci_EscrowDepositDisbursementRelatedtoAcquisition 0gci_EscrowDepositDisbursementRelatedtoAcquisition 0gci_EscrowDepositDisbursementRelatedtoAcquisition      
Number of publicly traded companies 2gci_NumberofPubliclyTradedCompanies              
Gannett Healthcare Group (GHG)                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Net assets of Gannett Healthcare Group     14,800,000us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= gci_GannettHealthcareGroupGHGMember
         
Investment Classified Ventures                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Proceeds from equity method investment, dividends or distributions           154,600,000us-gaap_EquityMethodInvestmentDividendsOrDistributions
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= gci_InvestmentClassifiedVenturesMember
   
Investment Classified Ventures | Apartments.com                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Proceeds from divestiture of businesses and interests in affiliates             585,000,000us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= gci_Apartments.comMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= gci_InvestmentClassifiedVenturesMember
 
London Broadcasting Company                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Number of television stations               6gci_NumberOfTelevisionStations
/ us-gaap_BusinessAcquisitionAxis
= gci_LondonBroadcastingCompanyMember
Purchase of television stations from London Broadcasting Company               215,000,000us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
/ us-gaap_BusinessAcquisitionAxis
= gci_LondonBroadcastingCompanyMember
Escrow deposit disbursement related to London Broadcasting Company television stations acquisition               $ 134,900,000gci_EscrowDepositDisbursementRelatedtoAcquisition
/ us-gaap_BusinessAcquisitionAxis
= gci_LondonBroadcastingCompanyMember