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Commitments and Contingencies (Detail) $ in Millions			1 Months Ended		3 Months Ended
Commitments and Contingencies (Detail) $ in Millions	Jan. 30, 2023 patent	Oct. 13, 2020 patent	Feb. 28, 2023 patent	Jul. 31, 2017	Mar. 30, 2024 USD ($) distributor customer executiveOfficer	Apr. 01, 2023 distributor	Feb. 01, 2024 USD ($)	Dec. 30, 2023 USD ($) customer	Oct. 20, 2022 complaint
Contingencies And Commitments [Line Items]
Severance plan participation agreements \| executiveOfficer					6
Required notice of resignation					6 months
Royalty obligation					$ 5.0
License fee					2.5
Change in control					15.0
Royalty guarantees, commitments, additional, change in control					2.0
Remaining commitment					267.2
Other commitment					5.1
License agreement term (in year)							3 years
Principal amount of license agreement							$ 9.0
Licensing agreement outstanding obligation					7.5
Licensing agreement, current					$ 3.0			$ 0.0
Payable Lease amount (in month)					12 months
Bank balances					$ 157.6
Bank balance covered by federal deposit insurance corporation limit					$ 8.1
Masimo Vs. Apple Inc
Contingencies And Commitments [Line Items]
Number of patents found infringed \| patent	2		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
Revenue Benchmark
Contingencies And Commitments [Line Items]
Distributors \| distributor					1	1
Accounts Receivable
Contingencies And Commitments [Line Items]
Concentration risk, AR balance one customer \| customer					1			1
GPO Members \| Revenue Benchmark \| Customer Concentration Risk
Contingencies And Commitments [Line Items]
Concentration risk, percentage					55.70%	51.00%
Just in time distributor one \| Revenue Benchmark \| Customer Concentration Risk
Contingencies And Commitments [Line Items]
Concentration risk, percentage					16.10%	8.90%
Customer One \| Accounts Receivable \| Customer Concentration Risk
Contingencies And Commitments [Line Items]
Percentage of accounts receivable balance					11.30%			18.10%
Chief Executive Officer
Contingencies And Commitments [Line Items]
Severance payment period				3 years
Qualifying termination					$ 479.7
Chief Executive Officer \| Cash Distribution
Contingencies And Commitments [Line Items]
Severance terms				50.00%
Chief Executive Officer \| Restricted Stock Units (RSUs)
Contingencies And Commitments [Line Items]
Severance terms				50.00%