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Employee Benefits - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2022 USD ($) plan	Oct. 02, 2021 USD ($)	Oct. 01, 2022 USD ($) plan	Oct. 02, 2021 USD ($)
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, number of plans	1		1
Defined benefit plan, number of plans	2		2
Expected rate of return on plan assets			0.00%
Masimo Retirement Savings Plan
Defined Contribution Plan Disclosure [Line Items]
Percent of match			3.00%
Company's contribution to employee retirement savings plan | $	$ 1.8	$ 0.9	$ 4.5	$ 2.8

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- Definition

Defined Benefit Plan, Number Of Plans

+ References

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- Definition

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

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