v2.4.0.8
Document and Entity Information
6 Months Ended
Dec. 29, 2013
Jan. 31, 2014
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 29, 2013  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q2  
Trading Symbol LRCX  
Entity Registrant Name LAM RESEARCH CORP  
Entity Central Index Key 0000707549  
Current Fiscal Year End Date --06-29  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   162,312,544