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Document and Entity Information (USD $)
3 Months Ended
Sep. 30, 2011
Oct. 21, 2011
Dec. 31, 2010
Document and Entity Information [Abstract]   
Entity Registrant NameHARRIS CORP /DE/  
Entity Central Index Key0000202058  
Document Type10-Q  
Document Period End DateSep. 30, 2011
Amendment Flagfalse  
Document Fiscal Year Focus2012  
Document Fiscal Period FocusQ1  
Current Fiscal Year End Date--06-29  
Entity Well-known Seasoned IssuerYes  
Entity Voluntary FilersNo  
Entity Current Reporting StatusYes  
Entity Filer CategoryLarge Accelerated Filer  
Entity Public Float  $ 5,760,729,154
Entity Common Stock, Shares Outstanding (actual number) 115,804,070