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v3.22.4

Employee Benefits - Narrative (Details) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2022 USD ($) plan | Jan. 01, 2022 USD ($) | Dec. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) plan | Jan. 01, 2022 USD ($) | Jan. 02, 2021 USD ($)
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |  |
Defined contribution plan, number of plans | plan | 1 |  |  | 1 |  |
Expected long-term return on plan assets |  |  |  | 1.70% | 0.00% |
Benefits paid |  |  |  | $ 2,800,000 |  |
Actual net loss on plan assets |  |  |  | (2,500,000) |  |
Benefits paid |  |  |  | 2,000,000 |  |
Actuarial loss |  |  |  | 1,900,000 |  |
Unfunded balance | $ (10,100,000) |  |  | (10,100,000) |  |
Employer contributions |  |  |  | $ 1,500,000 | $ 0 |
Forecast [Member] |  |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |  |
Employer contributions |  |  | $ 1,700,000 |  |  |
Masimo Retirement Savings Plan |  |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |  |
Percent of employees pay |  |  |  | 100.00% |  |
Percent of match |  |  |  | 3.00% |  |
Company's contribution to employee retirement savings plan | $ 4,500,000 | $ 3,400,000 |  |  |  | $ 3,200,000
Masimo Retirement Savings Plan | Foreign Plan |  |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |  |
Company's contribution to employee retirement savings plan |  |  |  | $ 4,300,000 |  |

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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + 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 (a)(6) -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 60 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + 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 (b)(5) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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