Accounting Policies [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] U.S. Treasuries US Treasury Securities [Member] Money Market funds Money Market Funds [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair value hierarchy for financial assets Assets, Fair Value Disclosure [Abstract] Total Assets, Fair Value Disclosure Fair Value Hierarchy for Financial Assets Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Changes in Product Warranty Accrual Schedule of Product Warranty Liability [Table Text Block] Schedule of Change in Accumulated Other Comprehensive Income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reconciliation of Basic and Diluted Net Income Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Debt Disclosure [Abstract] Line of Credit Facility Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Credit Agreement Credit Agreement [Member] Credit Agreement [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Base Rate Base Rate [Member] One Month Adjusted London Interbank Offered Rate (LIBOR) One Month Adjusted London Interbank Offered Rate (LIBOR) [Member] One Month Adjusted London Interbank Offered Rate (LIBOR) [Member] Adjusted London Interbank Offered Rate (LIBOR) Adjusted London Interbank Offered Rate (LIBOR) [Member] Adjusted London Interbank Offered Rate (LIBOR) [Member] Federal Fund Federal Funds [Member] Federal Funds [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt Instrument, Term Debt Instrument, Term Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Long-term Line of Credit, Noncurrent Long-term Line of Credit, Noncurrent Variable Interest Entity [Abstract] Variable Interest Entity [Abstract] Changes in Noncontrolling Interest for Cercacor Noncontrolling Interest Table [Table Text Block] A tabular disclosure of the changes in the carrying amount of the entity's noncontrolling interests. Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Fiscal Periods Fiscal Period, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Reclassification, Policy [Policy Text Block] Reclassification, Policy [Policy Text Block] Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Accounts Receivable and Allowance for Doubtful Accounts Trade and Other Accounts Receivable, Policy [Policy Text Block] Property, Plant and Equipment, Policy [Policy Text Block] Property, Plant and Equipment, Policy [Policy Text Block] Intangible Assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Impairment of Goodwill and Intangible assets Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Product Warranty Standard Product Warranty, Policy [Policy Text Block] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Net Income Per Share Earnings Per Share, Policy [Policy Text Block] New Accounting Pronouncement New Accounting Pronouncements, Policy [Policy Text Block] Inventory, Policy [Policy Text Block] Inventory, Policy [Policy Text Block] Equity [Abstract] Number of common shares authorized to be repurchased under new stock repurchase program Stock Repurchase Program, Number of Shares Authorized to be Repurchased Stock repurchase program, number of shares repurchased Treasury Stock, Shares, Acquired Stock repurchase program, average price per share Treasury Stock Acquired, Average Cost Per Share Stock repurchase program, total value Treasury Stock, Value, Acquired, Cost Method Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents Cash and Cash Equivalents Disclosure [Text Block] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Licensed rainbow parameters Licensed Rainbow Parameters [Member] Licensed Rainbow Parameters. Handheld Products Incorporating Rainbow Technology Handheld Products Incorporating Rainbow Technology [Member] Handheld Products Incorporating Rainbow Technology [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Percentage of royalty expense Percentage Of Royalty Expense The percentage rate used to determine the amount of expense related to royalty payments under a contractual arrangement such as payment for use of technology or intellectual property. Minimum aggregate royalty payments Payments for Royalties Increase in royalties payable in current year Adjusted Royalties Payable Licensed The adjusted minimum annual aggregate royalty expense for all licensed parameters, under certain circumstances. Increase in the minimum aggregate annual royalties payment Adjusted Royalties Payable Non Licensed The adjusted minimum annual aggregate royalty expense for non-licensed parameters, under certain circumstances. Percentage reimbursed Percentage Reimbursed Percentage of certain expenses that are reimbursed to the Variable Interest Entity. Total expenses for additional services, materials and supplies Research and Development Arrangement, Contract to Perform for Others, Costs Incurred, Gross Deferred revenue related to technology eliminated upon consolidation Deferred Revenue Eliminated Upon Consolidation Deferred revenue eliminated upon consolidation. Accounts receivable (payable) eliminated upon consolidation, net Accounts Receivables Payables Eliminated Upon Consolidation Net receivable or payable balance eliminated upon consolidation. Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Total assets, net of intercompany eliminations Variable Interest Entity, Consolidated, Carrying Amount, Assets Intangible assets Variable Interest Entity Consolidated Carrying Amount Intangible Assets Variable interest entity consolidated carrying amount intangible assets. Property and equipment Variable Interest Entity Consolidated Carrying Amount Property And Equipment Variable interest entity consolidated carrying amount property and equipment. Total liabilities, net of intercompany eliminations Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Segment Reporting [Abstract] Analysis of Product Revenues Based upon Geographic Area Shipped Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Amortization of Intangible Assets Amortization of Intangible Assets Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-based compensation expense Allocated Share-based Compensation Expense Aggregate intrinsic value of options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value of options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Aggregate intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Unrecognized share-based compensation related to unvested options granted Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Unrecognized share-based compensation related to unvested options granted, term Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Weighted average remaining contractual term of options exercisable, years Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Schedule of Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Intangible Assets Intangible Assets Disclosure [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Description of the Company Nature of Operations [Text Block] 2014 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Net carrying amount Finite-Lived Intangible Assets, Net Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Furniture and Fixtures [Member] Furniture and Fixtures [Member] Capital Lease Obligations Capital Lease Obligations [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Number square feet purchased Property, Plant, and Equipment, Number Square Feet Purchased Property, Plant, and Equipment, Number Square Feet Purchased Purchase price of property Property, Plant and Equipment, Additions Furniture and Fixtures, Gross Capital Leased Assets, Gross Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Stock Repurchase Program Treasury Stock [Text Block] Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Future Minimum Lease Payments Under Operating and Capital Leases Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] Accumulated other comprehensive income, beginning of period Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Accumulated other comprehensive income, end of period Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Contingencies And Commitments [Table] Contingencies And Commitments [Table] Contingencies And Commitments [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Masimo vs. Nellcor Masimo vs. Nellcor [Member] Masimo vs. Nellcor [Member] Masimo vs. Philips Masimo vs. Philips [Member] Masimo vs. Philips [Member] Masimo vs. Mindray DS USA, Inc. and Shenzhen Mindray Bio-Medical Electronics Masimo vs. Mindray DS USA, Inc. and Shenzhen Mindray Bio-Medical Electronics [Member] Masimo vs. Mindray DS USA, Inc. and Shenzhen Mindray Bio-Medical Electronics [Member] Masimo vs Former Physician Office Sales Representatives Masimo vs Former Physician Office Sales Representatives [Member] Masimo vs Former Physician Office Sales Representatives [Member] Masimo vs. Physicians Healthsource, Inc. Masimo vs. Physicians Healthsource, Inc. [Member] Masimo vs. Physicians Healthsource, Inc. [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Just in time distributor one Just in time distributor one [Member] Just in time distributor one [Member] Just in time distributor two Just in time distributor two [Member] Just in time distributor two [Member] Automobiles Automobiles [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Customer concentration risk Customer Concentration Risk [Member] Accounts Receivable Accounts Receivable [Member] Sales Sales [Member] Contingencies And Commitments [Line Items] Contingencies And Commitments [Line Items] Contingencies And Commitments [Line Items] Leasehold improvement incentives received Deferred Rent Credit Accrued rent expense Accrued Rent Operating lease expiration date Lease Expiration Date Rental expense related to operating leases Operating Leases, Rent Expense Interest rates on capital lease Interest Rates On Capital Lease The range of interest rates for all capital leases as of the balance sheet date. Company contribution percentage based on employee contribution of up to 3% of employee's compensation Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Company's contribution to employee retirement savings plan Defined Contribution Plan, Employer Discretionary Contribution Amount Initial term of agreement Initial Term Of Executive Employment Agreement Initial term of Executive Employment agreement. Severance plan participation agreements Severance Plan Participation Agreements Severance plan participation agreements. Purchase Obligation Purchase Obligation Other Commitments, Description Other Commitments, Description Bank balances Cash Bank balance covered by Federal Deposit Insurance Corporation limit Cash, FDIC Insured Amount Money market funds Other Commitment Sale of company's products to customers Revenue Customer Concentration Sales of products to customers affiliated with Group Purchasing Organizations. Concentration risk, just-in-time distributors Concentration Risk, Just-in-time Distributors Concentration Risk, Just-in-time Distributors Percentage of accounts receivable balance from two just-in-time distributor Percentage Of Accounts Receivable Balance From Two Just In Time Distributor Percentage Of Accounts Receivable Balance From Two Just In Time Distributor Percentage of revenue one customer Percentage Of Revenue One Customer Percentage of the Company's total revenue that is from one customer. Percentage of revenue two customer Percentage Of Revenue Two Customer Percentage of revenue two customer. Royalty Royalty Royalty revenue earned during the period from a third party resulting from a settlement agreement. Royalty Rate Percentage Royalty Rate Percentage Royalty rate Percentage. Gain contingency, patents found infringed Gain Contingency, Patents Found Infringed upon, Number Number of patents allegedly infringed Loss Contingency, Patents Allegedly Infringed, Number Loss contingency, patents allegedly infringed, patent court limitation on defendent Loss Contingency, Patents Allegedly Infringed, Patent Court Limitation on Defendant Loss Contingency, Patents Allegedly Infringed, Patent Court Limitation on Defendant Loss contingency, patents allegedly infringed, patent court limitation on plaintiff Loss Contingency, Patents Allegedly Infringed, Patent Court Limitation on Plaintiff Loss Contingency, Patents Allegedly Infringed, Patent Court Limitation on Plaintiff Loss contingency, new claims filed Loss Contingency, New Claims Filed, Number Number of former sales representatives Number of Former Sales Representatives Number of Former Sales Representatives Litigation settlement amount Litigation Settlement, Amount Litigation settlement expense Litigation Settlement, Expense Increase (decrease) in loss contingency accrual Loss Contingency Accrual, Period Increase (Decrease) Loss contingency, damages sought Loss Contingency, Damages Sought, Value Per Violation Loss Contingency, Damages Sought, Value Per Violation Number of participants in the surfactant, positive pressure, and oxygenation randomized trial Number of Participants in the Surfactant, Positive Pressure, and Oxygenation Randomized Trial Number of Participants in the Surfactant, Positive Pressure, and Oxygenation Randomized Trial Royalties Receivable [Abstract] Royalties Receivable [Abstract] Royalty receivable Royalty Receivable Amount due from third party for royalty earned during the period resulting from a settlement agreement. Number of days after which royalty report and payment is received Number Of Days After Which Royalty Report And Payment Is Received Number of days after which royalty report and payment is received. Highly liquid investments maximum maturity period Cash Equivalents Maximum Maturity Period Cash equivalents maximum maturity period. Cash balance Cash equivalents Cash Equivalents, at Carrying Value US Government Securities, at Carrying Value US Government Securities, at Carrying Value Money market funds Money Market Funds, at Carrying Value Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Raw materials Inventory, Raw Materials, Net of Reserves Work in-process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total Inventory, Net Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] North and South America Americas [Member] Europe, Middle East and Africa EMEA [Member] Asia and Australia Segment Geographical Group Of Countries Group Two [Member] Segment Geographical Group of Countries Group Two [Member] United States UNITED STATES Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Reportable Geographical Components Reportable Geographical Components [Member] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Analysis of Product Revenues Based upon the Geographic Area Shipped Segment Reporting Information, Revenue for Reportable Segment [Abstract] Total product revenue Sales Revenue, Goods, Net Total product revenue, in percentage Concentration Risk, Percentage Number and Weighted Average Exercise Price of Options Issued and Outstanding under all Stock Option Plans Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Range of Assumptions Used and Resulting Weighted-Average Fair Value of Options Granted at Date of Grant Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Income Tax Disclosure [Abstract] Gross unrecognized tax benefit Unrecognized Tax Benefits Unrecognized tax benefit that would affect effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Patents Patents [Member] Customer relationships Customer Relationships [Member] Acquired technology Acquired Technology [Member] Acquired Technology [Member] Trademarks Trademarks [Member] Capitalized software development costs Software and Software Development Costs [Member] Other Other Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Total cost Finite-Lived Intangible Assets, Gross Total accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Income Taxes Income Tax Disclosure [Text Block] Segment Information and Enterprise Reporting Segment Reporting Disclosure [Text Block] Income Statement [Abstract] Revenue: Revenues [Abstract] Product Total revenue Revenues Cost of goods sold Cost of Goods Sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Selling, general and administrative Selling, General and Administrative Expense Research and development Research and Development Expense Litigation award and defense costs Legal Fees Total operating expenses Operating Expenses Operating income Operating Income (Loss) Non-operating income (expense) Nonoperating Income (Expense) Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income including noncontrolling interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net (income) loss attributable to the noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to Masimo Corporation stockholders Net Income (Loss) Attributable to Parent Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent [Abstract] Comprehensive income attributable to Masimo Corporation stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Net income per share attributable to Masimo Corporation stockholders: Earnings Per Share [Abstract] Basic (in usd per share) Earnings Per Share, Basic Diluted (in usd per share) Earnings Per Share, Diluted Weighted-average shares used in per share calculations: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Options outstanding, beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Canceled Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options outstanding, end of period Options exercisable, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Options available for grant, end of period Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Options outstanding, beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Canceled Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options outstanding, end of period Options exercisable, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Operating Leases Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2014 (balance of year) Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2015 Operating Leases, Future Minimum Payments, Due in Two Years 2016 Operating Leases, Future Minimum Payments, Due in Three Years 2017 Operating Leases, Future Minimum Payments, Due in Four Years 2018 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Capital Leases Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2014 (balance of year) Capital Leases, Future Minimum Payments, Remainder of Fiscal year 2015 Capital Leases, Future Minimum Payments Due in Two Years 2016 Capital Leases, Future Minimum Payments Due in Three Years 2017 Capital Leases, Future Minimum Payments Due in Four Years 2018 Capital Leases, Future Minimum Payments Due in Five Years Thereafter Capital Leases, Future Minimum Payments Due Thereafter Total Capital Leases, Future Minimum Payments Due Total Disclosure Commitments And Contingencies Future Minimum Lease Payments Under Operating And Capital Leases [Abstract] Disclosure Commitments And Contingencies Future Minimum Lease Payments Under Operating And Capital Leases [Abstract] 2014 (balance of year) Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year 2015 Contractual Obligation, Due in Second Year 2016 Contractual Obligation, Due in Third Year 2017 Contractual Obligation, Due in Fourth Year 2018 Contractual Obligation, Due in Fifth Year Thereafter Contractual Obligation, Due after Fifth Year Total Contractual Obligation Components of Inventory Schedule of Inventory, Current [Table Text Block] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Weighted average number of years until the next renewal Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension Impairment of goodwill, intangible assets and other long-lived assets Goodwill and Intangible Asset Impairment Product life estimate Product Life Estimate Estimated useful life of products. Rate Of royalty agreed to be paid Rate Of Royalty Agreed To Be Paid Rate of royalty agreed to be paid. Number of days royalty revenue is adjusted subsequent to quarter end Royalty Revenue, Number of Days Royalty Revenue is Adjusted Subsequent to Quarter End Royalty Revenue, Number of Days Royalty Revenue is Adjusted Subsequent to Quarter End Warranty period for defects in material and workmanship Warranty Period For Defects In Material And Workmanship Warranty period for defects in material and workmanship. Warranty period, minimum, long-term sales agreement Long Term Sales Agreement Warranty Minimum Long-term sales agreement warranty minimum. Warranty period, maximum, long-term sales agreement Long Term Sales Agreement Warranty Maximum Long-term sales agreement warranty maximum. Options to purchase of shares of common stock Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Machinery and equipment Machinery and Equipment [Member] Tooling Tools, Dies and Molds [Member] Computer equipment Computer Equipment [Member] Vehicles Vehicles [Member] Leasehold improvements Leasehold Improvements [Member] Demonstration units Demonstration Units [Member] Demonstration units. Construction in Progress [Member] Construction in Progress [Member] Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross Accumulated depreciation and amortization Property and equipment, net Property, Plant and Equipment, Net Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Warranty accrual, beginning of period Product Warranty Accrual Provision for warranty costs Product Warranty Accrual, Period Increase (Decrease) Warranty expenditures Product Warranty Expense Warranty accrual, end of period Royalties Receivable Royalties Receivable [Text Block] Description of amount due from third party for royalty earned during the period resulting from a settlement agreement. Range of assumptions used and resulting weighted-average fair value of options granted at the date of grant Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Risk-free interest rate, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Estimated volatility, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Estimated volatility, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected dividends Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Weighted-average fair value of options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Variable Interest Entity (VIE) Variable Interest Entities [Text Block] Variable Interest Entities [Text Block] Statement of Financial Position [Abstract] Accounts receivable, allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Noncontrolling Interest Table [Table Text Block] Noncontrolling interest, beginning of period Increase in additional paid-in capital of noncontrolling interest Noncontrolling Interest, Increase from Subsidiary Equity Issuance Net loss attributable to noncontrolling interest Noncontrolling interest, end of period Document And Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Net income attributable to stockholders of Masimo Corporation: Earnings Per Share Reconciliation [Abstract] Net income including noncontrolling interest Basic net income per share attributable to Masimo Corporation stockholders: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net income attributable to Masimo Corporation stockholders Weighted average shares outstanding - basic (in shares) Basic net income per share attributable to Masimo Corporation stockholders (in usd per share) Diluted net income per share attributable to Masimo Corporation stockholders: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Diluted share equivalent: stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average shares outstanding - diluted (in shares) Diluted net income per share attributable to Masimo Corporation stockholders (in usd per share) Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Line of Credit Debt Disclosure [Text Block] Statement [Table] Statement [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Current assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net of allowance for doubtful accounts of $2,097 and $1,833 at June 28, 2014 and December 28, 2013, respectively Accounts Receivable, Net, Current Royalty Receivable Royalties receivable Royalties Receivables Amount due from third party for royalty earned during the period resulting from a third party settlement agreement. Inventories Prepaid expenses Prepaid Expense, Current Prepaid income taxes Prepaid Taxes Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Current Other current assets Other Assets, Current Total current assets Assets, Current Deferred cost of goods sold Deferred Cost Of Goods Sold Sum of the carrying amounts of deferred costs that are expected to be recognized as a charge against earnings. Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Goodwill Goodwill Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued compensation Employee-related Liabilities, Current Accrued liabilities Accrued Liabilities, Current Income taxes payable Accrued Income Taxes, Current Deferred revenue Deferred Revenue, Current Long-term Debt and Capital Lease Obligations, Current Long-term Debt and Capital Lease Obligations, Current Total current liabilities Liabilities, Current Deferred revenue Deferred Revenue, Noncurrent Long-term Debt and Capital Lease Obligations Long-term Debt and Capital Lease Obligations Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Masimo Corporation stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.001 par value; 5,000 shares authorized; 0 shares issued and outstanding at June 28, 2014 and December 28, 2013 Preferred Stock, Value, Outstanding Common stock, $0.001 par value; 100,000 shares authorized; 54,768 and 56,623 shares outstanding at June 28, 2014 and December 28, 2013, respectively Common Stock, Value, Outstanding Treasury stock, 6,181 and 4,156 shares at June 28, 2014 and December 28, 2013, respectively Treasury Stock, Value Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income Retained earnings Retained Earnings (Accumulated Deficit) Total Masimo Corporation stockholders’ equity Stockholders' Equity Attributable to Parent Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Share-based compensation Share-based Compensation Loss on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Provision for doubtful accounts Provision for Doubtful Accounts Provision for deferred income taxes Deferred Income Tax Expense (Benefit) Income tax benefit from exercise of stock options granted prior to January 1, 2006 Income Tax Benefit From Exercise Of Stock Options Granted Reductions in the entity's income taxes that arise when compensation cost from stock options granted prior to adoption of ASC 718 recognized on the entity's tax return exceeds compensation cost from non-qualified stock options recognized on the income statement. This element increases net cash provided by operating activities. Excess tax deficit from share-based compensation arrangements Excess Tax Benefit from Share-based Compensation, Operating Activities Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Decrease in accounts receivable Increase (Decrease) in Accounts Receivable (Increase) decrease in royalties receivable Increase Decrease In Royalties Receivable The net change during the reporting period in the amount due from a third party for royalty earned during the period resulting from a settlement agreement. Increase in inventories Increase (Decrease) in Inventories Increase in deferred cost of goods sold Increase (Decrease) in Deferred Charges Increase in prepaid expenses Increase (Decrease) in Prepaid Expense Decrease (increase) in prepaid income taxes Increase (Decrease) in Prepaid Taxes (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets Increase in accounts payable Increase (Decrease) in Accounts Payable Decrease in accrued compensation Increase (Decrease) in Employee Related Liabilities Decrease in accrued liabilities Increase (Decrease) in Accrued Liabilities Decrease in income taxes payable Increase (Decrease) in Income Taxes Payable Increase in deferred revenue Increase (Decrease) in Deferred Revenue (Decrease) increase in other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Increase in intangible assets Payments to Acquire Intangible Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Proceeds from (Repayments of) Lines of Credit Proceeds from (Repayments of) Lines of Credit Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Repayments of capital lease obligations Repayments of Long-term Capital Lease Obligations Proceeds from issuance of common stock Proceeds from Stock Options Exercised Excess tax deficit from share-based compensation arrangements Excess Tax Benefit from Share-based Compensation, Financing Activities Repurchases of common stock Payments for Repurchase of Common Stock Repurchases of equity by noncontrolling interest, net of equity issued Proceeds from (Payments to) Noncontrolling Interests Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effect of foreign currency exchange rates on cash Effect of Exchange Rate on Cash and Cash Equivalents Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period