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Commitments and Contingencies - Additional Information (Detail)						1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 19, 2022 appeal patent	Sep. 16, 2022	Aug. 05, 2022 appeal patent	Apr. 21, 2021 patent	Jan. 02, 2014 USD ($)	Jul. 31, 2017	Oct. 01, 2022 USD ($) Customer distributor executiveOfficer	Oct. 02, 2021 distributor	Oct. 01, 2022 USD ($) Customer distributor executiveOfficer	Oct. 02, 2021 distributor	Oct. 20, 2022 complaint	Jan. 01, 2022 Customer
Contingencies And Commitments [Line Items]
Severance plan participation agreements | executiveOfficer							5		5
Required notice of resignation									6 months
Royalty obligation							$ 5,000,000		$ 5,000,000
License fee							2,500,000		2,500,000
Change in control							15,000,000		15,000,000
Royalty guarantees, commitments, additional, change in control							2,000,000		2,000,000
Remaining commitment							386,800,000		386,800,000
Other commitment							4,700,000		4,700,000
Bank balances							219,500,000		219,500,000
Bank balance covered by Federal Deposit Insurance Corporation limit							$ 8,200,000		$ 8,200,000
Percentage of revenue one customer							8.90%	15.00%	10.50%	14.60%
Percentage of revenue two customer								10.40%		10.40%
Concentration risk, AR balance one customer | Customer							1		1			1
Masimo vs. Physicians Healthsource, Inc.
Contingencies And Commitments [Line Items]
Loss contingency, damages sought					$ 500
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 appeals | appeal			1
Number of asserted patents | patent			5
Apple, Inc. Patent Infringement | Pending Litigation | Subsequent Event
Contingencies And Commitments [Line Items]
Number of appeals | appeal	2
Number of asserted patents | patent	2
Number of complaints | complaint											2
Sales
Contingencies And Commitments [Line Items]
Distributors | distributor							1	2	1	2
Accounts Receivable
Contingencies And Commitments [Line Items]
Percentage of accounts receivable balance							12.20%		12.20%			15.70%
Sales Revenue, Product Line
Contingencies And Commitments [Line Items]
Percentage of revenue - customer concentration							54.00%	55.00%	52.90%	51.80%
Chief Executive Officer
Contingencies And Commitments [Line Items]
Severance payment period						3 years
Qualifying termination									$ 664,300,000
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%
Chief Operating Officer
Contingencies And Commitments [Line Items]
Severance payment period		36 months
Chief Operating Officer | Restricted Stock Units (RSUs)
Contingencies And Commitments [Line Items]
Severance terms		50.00%

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