XML 39 R1.htm IDEA: XBRL DOCUMENT v3.3.1.900
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Jan. 02, 2016
Jul. 04, 2015
Document And Entity Information [Abstract]    
Document Type 10-K  
Amendment Flag false  
Document Period End Date Jan. 02, 2016  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus FY  
Trading Symbol MASI  
Entity Registrant Name MASIMO CORP  
Entity Central Index Key 0000937556  
Current Fiscal Year End Date --01-02  
Entity Well-known Seasoned Issuer Yes  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding 49,487,811  
Market Value of non affiliate stock at end of Q2   $ 1,241.6