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Document and Entity Information Document
9 Months Ended
Oct. 28, 2011
Nov. 18, 2011
Document and Entity Information [Abstract]  
Entity Registrant NameDELL INC 
Entity Central Index Key0000826083 
Document Type10-Q 
Document Fiscal Period FocusQ3 
Document Period End DateOct. 28, 2011
Amendment Flagfalse 
Document Fiscal Year Focus2012 
Current Fiscal Year End Date--02-03 
Entity Current Reporting StatusYes 
Entity Voluntary FilersNo 
Entity Well-known Seasoned IssuerNo 
Entity Filer CategoryLarge Accelerated Filer 
Entity Common Stock Shares Outstanding 1,796,509,489