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Cover - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2022
Jan. 28, 2023
Jul. 03, 2021
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2022    
Document Transition Report false    
Entity File Number 001-33642    
Entity Registrant Name MASIMO CORP    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 33-0368882    
Entity Address, Address Line One 52 Discovery    
Entity Address, City or Town Irvine,    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92618    
City Area Code (949)    
Local Phone Number 297-7000    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 5.3
Entity Common Stock, Shares Outstanding   52,601,943  
Documents Incorporated by Reference Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K incorporate information by reference from the registrant’s proxy statement for the registrant’s 2023 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission within 120 days after the close of the fiscal year covered by this annual report on Form 10-K.    
Amendment Flag false    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000937556    
Common Stock, par value $0.001      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, par value $0.001    
Trading Symbol MASI    
Security Exchange Name NASDAQ    
Rights to Purchase Series A Junior Participating Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Rights to Purchase Series A Junior Participating Preferred Stock    
Trading Symbol N/A    
Security Exchange Name NASDAQ