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Document and Entity Information - Jun. 28, 2015 - shares
Total
Document Information [Line Items]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 28, 2015
Document Fiscal Year Focus 2015
Document Fiscal Period Focus Q2
Trading Symbol LMT
Entity Registrant Name LOCKHEED MARTIN CORP
Entity Central Index Key 0000936468
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 310,534,530