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Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Jan. 29, 2016
Mar. 24, 2016
Jul. 31, 2015
Document and Entity Information [Abstract]      
Entity Registrant Name LOWES COMPANIES INC    
Entity Central Index Key 0000060667    
Document Type 10-K    
Document Period End Date Jan. 29, 2016    
Amendment Flag false    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --01-29    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 64.3
Entity Common Stock, Shares Outstanding   897,438,629