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Commitments and Contingencies - Additional Information (Detail)		1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 02, 2014 USD ($)	Jul. 31, 2017	Jul. 02, 2022 USD ($) Customer distributor executiveOfficer	Jul. 03, 2021 distributor	Jul. 02, 2022 USD ($) Customer distributor executiveOfficer	Jul. 03, 2021 distributor	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			387,400,000		387,400,000
Other commitment			5,400,000		5,400,000
Bank balances			218,000,000		218,000,000
Bank balance covered by Federal Deposit Insurance Corporation limit			$ 7,600,000		$ 7,600,000
Percentage of revenue one customer			10.60%	13.70%	11.60%	14.40%
Percentage of revenue two customer				10.80%		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
Sales
Contingencies And Commitments [Line Items]
Distributors | distributor			1	2	1	2
Accounts Receivable
Contingencies And Commitments [Line Items]
Percentage of accounts receivable balance			6.80%		6.80%		15.70%
Sales Revenue, Product Line
Contingencies And Commitments [Line Items]
Percentage of revenue - customer concentration			31.40%	49.00%	40.00%	50.10%
Chief Executive Officer
Contingencies And Commitments [Line Items]
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%

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