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Document and Entity Information - Jun. 30, 2015 - shares
Total
Document and Entity Information  
Entity Registrant Name RAMBUS INC
Entity Central Index Key 0000917273
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Document Type 10-Q
Document Period End Date Jun. 30, 2015
Document Fiscal Year Focus 2015
Document Fiscal Period Focus Q2
Amendment Flag false
Entity Current Reporting Status Yes
Entity Common Stock, Shares Outstanding 116,360,766