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Commitments and Contingencies (Details) |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
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Jun. 12, 2025 USD ($) | May 26, 2025 USD ($) | Jan. 17, 2025 USD ($) | Nov. 13, 2024 USD ($) shares | Jun. 05, 2023 USD ($) | Jan. 30, 2023 patent | Oct. 13, 2020 patent | Nov. 04, 2015 USD ($) | Nov. 30, 2025 USD ($) | Oct. 31, 2024 USD ($) | Jan. 03, 2026 USD ($) distributor executiveOfficer customer shares | Dec. 28, 2024 USD ($) distributor customer shares | Dec. 30, 2023 distributor shares | Oct. 24, 2024 USD ($) | Oct. 20, 2022 complaint
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance plan participation agreements | executiveOfficer |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |
Period for notice of resignation |  |  |  |  |  |  |  |  |  |  | 6 months |  |  |  |
License fee paid |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,500,000 |
Royalty guarantees, commitments, change in control |  |  |  |  |  |  |  |  |  |  | $ 15,000,000.0 |  |  | 15,000,000.0 |
Royalty guarantees, commitments, additional, change in control |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000.0 |
Remaining amount committed |  |  |  |  |  |  |  |  |  |  | 258,400,000 |  |  |  |
Other commitment |  |  |  |  |  |  |  |  |  |  | 4,100,000 |  |  |  |
Loss contingency, success fee, payments | $ 2,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Success fees outstanding |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  |  |  |  | 152,300,000 | $ 123,600,000 |  |  |
Bank balance covered by federal deposit insurance corporation limit |  |  |  |  |  |  |  |  |  |  | $ 4,200,000 |  |  |  |
Ms Catherine Szyman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Annual target long-term incentive award |  |  | $ 7,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Retirement policy attainment period |  |  | 60 years |  |  |  |  |  |  |  |  |  |  |  |
Continuous employment period |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Ms Catherine Szyman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base salary percentage |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Ms Catherine Szyman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base salary percentage |  |  | 200.00% |  |  |  |  |  |  |  |  |  |  |  |
Brennan Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary |  |  |  | $ 1,042,000 |  |  |  |  |  |  |  |  |  |  |
Discretionary bonus of target amount |  |  |  | 621,250 |  |  |  |  |  |  |  |  |  |  |
Discretionary bonus amount |  |  |  | $ 1,087,190 |  |  |  |  |  |  |  |  |  |  |
Masimo Vs. Apple Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents found infringed | patent |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |
Masimo Vs. Apple Inc | Pending Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents found infringed upon | patent |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |
Patents found not infringed upon | patent |  |  |  |  |  |  | 9 |  |  |  |  |  |  |  |
Loss contingency, damages awarded, value |  |  |  |  |  |  |  |  | $ 634,000,000 |  |  |  |  |  |
Apple, Inc. Patent Infringement | Pending Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages awarded, value |  |  |  |  |  |  |  |  |  | $ 250 |  |  |  |  |
Number of complaints | complaint |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2
Masimo v.s. Willow Laboratories | Pending Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  | $ 6,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of just-in-time distributors | distributor |  |  |  |  |  |  |  |  |  |  | 1 | 1 | 1 |  |
GPO Members | Revenue Benchmark | Customer Concentration Risk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  |  |  |  |  | 57.20% | 56.90% | 53.20% |  |
Just in time distributor one | Revenue Benchmark | Customer Concentration Risk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  |  |  |  |  | 18.80% | 18.50% | 18.10% |  |
Customer Two | Accounts Receivable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk accounts receivable customer | customer |  |  |  |  |  |  |  |  |  |  | 2 | 2 |  |  |
Customer Two | Accounts Receivable | Customer Concentration Risk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of accounts receivable balance |  |  |  |  |  |  |  |  |  |  | 10.10% | 11.90% |  |  |
Customer One | Accounts Receivable | Customer Concentration Risk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of accounts receivable balance |  |  |  |  |  |  |  |  |  |  | 26.50% | 12.20% |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) | shares |  |  |  |  |  |  |  |  |  |  | 300,000 | 200,000 | 500,000 |  |
Restricted Stock Units (RSUs) | Brennan Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) | shares |  |  |  | 8,916 |  |  |  |  |  |  |  |  |  |  |
Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance payment period |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |
Equity awards |  |  |  |  |  |  |  | $ 2,700,000 |  |  |  |  |  |  |
Cash payment |  |  |  |  |  |  |  | $ 35,000,000 |  |  |  |  |  |  |
Qualifying termination |  |  |  |  | $ 479,700,000 |  |  |  |  |  |  |  |  |  |

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