XML 177 R123.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 28, 2024 | Dec. 30, 2023 | Dec. 31, 2022
Income Taxes [Line Items] |  |  |
Increase (decrease) to tax and accrued interest related to uncertain tax positions | $ 5.4 | $ 7.4 | $ 4.5
Undistributed earnings of foreign subsidiaries | 997.5 |  |
Accumulated undistributed earnings | 86.5 |  |
Foreign tax credits | 1.9 |  |
Reinvested earnings | 911.0 |  |
Additional income tax expense | 26.8 |  |
Indefinitely carryforward research and development credits | 35.8 |  |
Investment tax credit | 2.7 |  |
Increase in valuation allowance | 7.6 |  |
Amount of unrecognized benefits affecting future tax rate | 35.6 | 30.6 |
Income tax expense (benefit) related to unrecognized tax benefits | 0.6 | (1.0) | $ (0.3)
Penalties and interest related to unrecognized tax benefits | 2.7 | $ 2.1 |
Research Tax Credit Carryforward |  |  |
Income Taxes [Line Items] |  |  |
Tax credit | 2.8 |  |
General Business Tax Credit Carryforward |  |  |
Income Taxes [Line Items] |  |  |
Tax credit | 6.8 |  |
Domestic Tax Jurisdiction |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards, gross | 43.7 |  |
State and Local Jurisdiction |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards, gross | 157.1 |  |
Foreign Tax Jurisdiction |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carryforwards, gross | $ 125.9 |  |

X
- Definition Amount of unrecognized benefits affecting future tax rate. + References No definition available. + Details
Name: | masi_AmountOfUnrecognizedBenefitsAffectingFutureTaxRate
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Income Taxes [Line Items] + References No definition available. + Details
Name: | masi_IncomeTaxesLineItems
Namespace Prefix: | masi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indefinitely carryforward research and development credits. + References No definition available. + Details
Name: | masi_IndefinitelyCarryforwardResearchAndDevelopmentCredits
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Operating loss carryforwards gross. + References No definition available. + Details
Name: | masi_OperatingLossCarryforwardsGross
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Tax and accrued interest related to uncertain tax positions increase decrease. + References No definition available. + Details
Name: | masi_TaxAndAccruedInterestRelatedToUncertainTaxPositionsIncreaseDecrease
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act, Deferred Tax Liability, Foreign Withholding Tax + References No definition available. + Details
Name: | masi_TaxCutsandJobsActDeferredTaxLiabilityForeignWithholdingTax
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act, Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiary + References No definition available. + Details
Name: | masi_TaxCutsandJobsActDeferredTaxLiabilityNotRecognizedAmountofUnrecognizedDeferredTaxLiabilityUndistributedEarningsofForeignSubsidiary
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Tax Cuts and Jobs Act, Deferred Tax Liability, Undistributed Foreign Earnings + References No definition available. + Details
Name: | masi_TaxCutsandJobsActDeferredTaxLiabilityUndistributedForeignEarnings
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax Cuts and Jobs Act, Unrecognized Deferred Tax Liability, Potential Foreign Withholding Tax + References No definition available. + Details
Name: | masi_TaxCutsandJobsActUnrecognizedDeferredTaxLiabilityPotentialForeignWithholdingTax
Namespace Prefix: | masi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_InvestmentTaxCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
Name: | us-gaap_TaxCreditCarryforwardAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 740 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482603/740-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 25 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482620/740-10-25-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 740 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477617/942-740-50-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 740 -Topic 944 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478822/944-740-50-1 + Details
Name: | us-gaap_UndistributedEarningsOfForeignSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 217 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-217 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 217 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-217 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
Name: | us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=us-gaap_ResearchMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=us-gaap_GeneralBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |