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Commitments and Contingencies (Details)									1 Months Ended		3 Months Ended		9 Months Ended
Commitments and Contingencies (Details)	Jun. 12, 2025 USD ($)	May 26, 2025 USD ($)	Jan. 17, 2025 USD ($)	Nov. 13, 2024 USD ($) shares	Jun. 05, 2023 USD ($)	Jan. 30, 2023 patent	Oct. 13, 2020 patent	Nov. 04, 2015 USD ($)	Oct. 31, 2024 USD ($)	Feb. 28, 2023 patent	Sep. 27, 2025 USD ($) distributor executiveOfficer	Sep. 28, 2024 distributor	Sep. 27, 2025 USD ($) executiveOfficer distributor shares	Sep. 28, 2024 distributor shares	Dec. 28, 2024 USD ($)	Oct. 24, 2024 USD ($)	Oct. 20, 2022 complaint
Contingencies And Commitments [Line Items]
Severance plan participation agreements \| executiveOfficer											3		3
Required notice of resignation													6 months
License fee											$ 2,500,000		$ 2,500,000
Change in control											15,000,000		15,000,000			$ 15,000,000
Additional change in control																$ 2,000,000
Remaining commitment											252,600,000		252,600,000
Other commitment											4,600,000		4,600,000
Loss contingency, success fee, payments	$ 2,800,000
Success fees outstanding											0		0
Cash and cash equivalents											312,300,000		312,300,000		$ 123,600,000
Bank balance covered by federal deposit insurance corporation limit											$ 4,200,000		$ 4,200,000
Sales
Contingencies And Commitments [Line Items]
Distributors \| distributor											1	1	1	1
GPO Members \| Revenue Benchmark \| Customer Concentration Risk
Contingencies And Commitments [Line Items]
Concentration risk, percentage											58.20%	57.30%	58.70%	57.90%
Just in Time Distributor One \| Revenue Benchmark \| Customer Concentration Risk
Contingencies And Commitments [Line Items]
Concentration risk, percentage											18.40%	23.80%	18.80%	20.30%
Customer One \| Accounts Receivable \| Customer Concentration Risk
Contingencies And Commitments [Line Items]
Percentage of accounts receivable balance											22.50%		22.50%		12.20%
Customer Two \| Accounts Receivable \| Customer Concentration Risk
Contingencies And Commitments [Line Items]
Percentage of accounts receivable balance															11.90%
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
Ms Catherine Szyman \| Minimum
Contingencies And Commitments [Line Items]
Base salary percentage			100.00%
Ms Catherine Szyman \| Maximum
Contingencies And Commitments [Line Items]
Base salary percentage			200.00%
Restricted Stock Units (RSUs)
Contingencies And Commitments [Line Items]
Share-based compensation arrangement, grants in period (in shares) \| shares													300,000
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
Brennan Agreement \| Restricted Stock Units (RSUs)
Contingencies And Commitments [Line Items]
Share-based compensation arrangement, grants in period (in shares) \| shares				8,916
Masimo Vs. Apple Inc
Contingencies And Commitments [Line Items]
Number of patents found infringed \| patent						1				2
Masimo Vs. Apple Inc \| Pending Litigation
Contingencies And Commitments [Line Items]
Asserted patents found valid \| patent							3
Asserted patents found invalid \| patent							9
Apple, Inc. Patent Infringement \| Pending Litigation
Contingencies And Commitments [Line Items]
Number of complaints \| complaint																	2
Loss contingency, damages awarded, value									$ 250
Masimo V.S. Willow Laboratories \| Pending Litigation
Contingencies And Commitments [Line Items]
Loss contingency, damages sought, value		$ 2,750,000
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
Chief Executive Officer \| Restricted Stock Units (RSUs)
Contingencies And Commitments [Line Items]
Share-based compensation arrangement, grants in period (in shares) \| shares													2,700,000	2,700,000