3.26.1 html 373 640 1 true 122 0 false 12 false false R1.htm 0000001 - Document - Cover Sheet http://www.steris.com/role/Cover Cover Cover 1 false false R2.htm 0000002 - Document - Audit Information Sheet http://www.steris.com/role/AuditInformation Audit Information Cover 2 false false R3.htm 9952151 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.steris.com/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 3 false false R4.htm 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.steris.com/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 4 false false R5.htm 9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://www.steris.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS CONSOLIDATED STATEMENTS OF OPERATIONS Statements 5 false false R6.htm 9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://www.steris.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 6 false false R7.htm 9952155 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.steris.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 7 false false R8.htm 9952156 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY Sheet http://www.steris.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY Statements 8 false false R9.htm 9952157 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) Sheet http://www.steris.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITYParenthetical CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) Statements 9 false false R10.htm 9952158 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Sheet http://www.steris.com/role/NatureofOperationsandSummaryofSignificantAccountingPolicies Nature of Operations and Summary of Significant Accounting Policies Notes 10 false false R11.htm 9952159 - Disclosure - Restructuring Sheet http://www.steris.com/role/Restructuring Restructuring Notes 11 false false R12.htm 9952160 - Disclosure - Business Acquisitions and Divestitures Sheet http://www.steris.com/role/BusinessAcquisitionsandDivestitures Business Acquisitions and Divestitures Notes 12 false false R13.htm 9952161 - Disclosure - Discontinued Operations Sheet http://www.steris.com/role/DiscontinuedOperations Discontinued Operations Notes 13 false false R14.htm 9952162 - Disclosure - Goodwill and Intangible Assets Sheet http://www.steris.com/role/GoodwillandIntangibleAssets Goodwill and Intangible Assets Notes 14 false false R15.htm 9952163 - Disclosure - Inventories, Net Sheet http://www.steris.com/role/InventoriesNet Inventories, Net Notes 15 false false R16.htm 9952164 - Disclosure - Property, Plant and Equipment Sheet http://www.steris.com/role/PropertyPlantandEquipment Property, Plant and Equipment Notes 16 false false R17.htm 9952165 - Disclosure - Debt Sheet http://www.steris.com/role/Debt Debt Notes 17 false false R18.htm 9952166 - Disclosure - Additional Consolidated Balance Sheets Information Sheet http://www.steris.com/role/AdditionalConsolidatedBalanceSheetsInformation Additional Consolidated Balance Sheets Information Notes 18 false false R19.htm 9952167 - Disclosure - Income Tax Expense Sheet http://www.steris.com/role/IncomeTaxExpense Income Tax Expense Notes 19 false false R20.htm 9952168 - Disclosure - Benefit Plans Sheet http://www.steris.com/role/BenefitPlans Benefit Plans Notes 20 false false R21.htm 9952169 - Disclosure - Contingencies Sheet http://www.steris.com/role/Contingencies Contingencies Notes 21 false false R22.htm 9952170 - Disclosure - Business Segment Information Sheet http://www.steris.com/role/BusinessSegmentInformation Business Segment Information Notes 22 false false R23.htm 9952171 - Disclosure - Common Shares Sheet http://www.steris.com/role/CommonShares Common Shares Notes 23 false false R24.htm 9952172 - Disclosure - Repurchases of Common Shares Sheet http://www.steris.com/role/RepurchasesofCommonShares Repurchases of Common Shares Notes 24 false false R25.htm 9952173 - Disclosure - Share-Based Compensation Sheet http://www.steris.com/role/ShareBasedCompensation Share-Based Compensation Notes 25 false false R26.htm 9952174 - Disclosure - Financial and Other Guarantees Sheet http://www.steris.com/role/FinancialandOtherGuarantees Financial and Other Guarantees Notes 26 false false R27.htm 9952175 - Disclosure - Forward and Swap Contracts Sheet http://www.steris.com/role/ForwardandSwapContracts Forward and Swap Contracts Notes 27 false false R28.htm 9952176 - Disclosure - Fair Value Measurements Sheet http://www.steris.com/role/FairValueMeasurements Fair Value Measurements Notes 28 false false R29.htm 9952177 - Disclosure - Reclassifications out of AOCI (Notes) Notes http://www.steris.com/role/ReclassificationsoutofAOCINotes Reclassifications out of AOCI (Notes) Notes 29 false false R30.htm 9952178 - Disclosure - Schedule II - Valuation and Qualifying Accounts Sheet http://www.steris.com/role/ScheduleIIValuationandQualifyingAccounts Schedule II - Valuation and Qualifying Accounts Notes 30 false false R31.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 31 false false R32.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 32 false false R33.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 33 false false R34.htm 9955511 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Policies) Sheet http://www.steris.com/role/NatureofOperationsandSummaryofSignificantAccountingPoliciesPolicies Nature of Operations and Summary of Significant Accounting Policies (Policies) Policies http://www.steris.com/role/NatureofOperationsandSummaryofSignificantAccountingPolicies 34 false false R35.htm 9955512 - Disclosure - Contingencies Lease Policy (Policies) Sheet http://www.steris.com/role/ContingenciesLeasePolicyPolicies Contingencies Lease Policy (Policies) Policies http://www.steris.com/role/NatureofOperationsandSummaryofSignificantAccountingPolicies 35 false false R36.htm 9955513 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Tables) Sheet http://www.steris.com/role/NatureofOperationsandSummaryofSignificantAccountingPoliciesTables Nature of Operations and Summary of Significant Accounting Policies (Tables) Tables http://www.steris.com/role/NatureofOperationsandSummaryofSignificantAccountingPolicies 36 false false R37.htm 9955514 - Disclosure - Restructuring (Tables) Sheet http://www.steris.com/role/RestructuringTables Restructuring (Tables) Tables http://www.steris.com/role/Restructuring 37 false false R38.htm 9955515 - Disclosure - Business Acquisitions and Divestitures (Tables) Sheet http://www.steris.com/role/BusinessAcquisitionsandDivestituresTables Business Acquisitions and Divestitures (Tables) Tables http://www.steris.com/role/BusinessAcquisitionsandDivestitures 38 false false R39.htm 9955516 - Disclosure - Discontinued Operations (Tables) Sheet http://www.steris.com/role/DiscontinuedOperationsTables Discontinued Operations (Tables) Tables http://www.steris.com/role/DiscontinuedOperations 39 false false R40.htm 9955517 - Disclosure - Goodwill and Intangible Assets (Tables) Sheet http://www.steris.com/role/GoodwillandIntangibleAssetsTables Goodwill and Intangible Assets (Tables) Tables http://www.steris.com/role/GoodwillandIntangibleAssets 40 false false R41.htm 9955518 - Disclosure - Inventories, Net (Tables) Sheet http://www.steris.com/role/InventoriesNetTables Inventories, Net (Tables) Tables http://www.steris.com/role/InventoriesNet 41 false false R42.htm 9955519 - Disclosure - Property, Plant and Equipment (Tables) Sheet http://www.steris.com/role/PropertyPlantandEquipmentTables Property, Plant and Equipment (Tables) Tables http://www.steris.com/role/PropertyPlantandEquipment 42 false false R43.htm 9955520 - Disclosure - Debt (Tables) Sheet http://www.steris.com/role/DebtTables Debt (Tables) Tables http://www.steris.com/role/Debt 43 false false R44.htm 9955521 - Disclosure - Additional Consolidated Balance Sheets Information (Tables) Sheet http://www.steris.com/role/AdditionalConsolidatedBalanceSheetsInformationTables Additional Consolidated Balance Sheets Information (Tables) Tables http://www.steris.com/role/AdditionalConsolidatedBalanceSheetsInformation 44 false false R45.htm 9955522 - Disclosure - Income Tax Expense (Tables) Sheet http://www.steris.com/role/IncomeTaxExpenseTables Income Tax Expense (Tables) Tables http://www.steris.com/role/IncomeTaxExpense 45 false false R46.htm 9955523 - Disclosure - Benefit Plans (Tables) Sheet http://www.steris.com/role/BenefitPlansTables Benefit Plans (Tables) Tables http://www.steris.com/role/BenefitPlans 46 false false R47.htm 9955524 - Disclosure - Contingencies lease tables (Tables) Sheet http://www.steris.com/role/ContingenciesleasetablesTables Contingencies lease tables (Tables) Tables 47 false false R48.htm 9955525 - Disclosure - Business Segment Information (Tables) Sheet http://www.steris.com/role/BusinessSegmentInformationTables Business Segment Information (Tables) Tables http://www.steris.com/role/BusinessSegmentInformation 48 false false R49.htm 9955526 - Disclosure - Common Shares (Tables) Sheet http://www.steris.com/role/CommonSharesTables Common Shares (Tables) Tables http://www.steris.com/role/CommonShares 49 false false R50.htm 9955527 - Disclosure - Share-Based Compensation (Tables) Sheet http://www.steris.com/role/ShareBasedCompensationTables Share-Based Compensation (Tables) Tables http://www.steris.com/role/ShareBasedCompensation 50 false false R51.htm 9955528 - Disclosure - Financial and Other Guarantees (Tables) Sheet http://www.steris.com/role/FinancialandOtherGuaranteesTables Financial and Other Guarantees (Tables) Tables http://www.steris.com/role/FinancialandOtherGuarantees 51 false false R52.htm 9955529 - Disclosure - Forward and Swap Contracts (Tables) Sheet http://www.steris.com/role/ForwardandSwapContractsTables Forward and Swap Contracts (Tables) Tables http://www.steris.com/role/ForwardandSwapContracts 52 false false R53.htm 9955530 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.steris.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.steris.com/role/FairValueMeasurements 53 false false R54.htm 9955531 - Disclosure - Reclassifications out of AOCI (Tables) Sheet http://www.steris.com/role/ReclassificationsoutofAOCITables Reclassifications out of AOCI (Tables) Tables http://www.steris.com/role/ReclassificationsoutofAOCINotes 54 false false R55.htm 9955532 - Disclosure - Nature of Operations and Summary of Siginificant Accounting Policies (Details) Sheet http://www.steris.com/role/NatureofOperationsandSummaryofSiginificantAccountingPoliciesDetails Nature of Operations and Summary of Siginificant Accounting Policies (Details) Details 55 false false R56.htm 9955533 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies - Change in Accounting Principle (Details) Sheet http://www.steris.com/role/NatureofOperationsandSummaryofSignificantAccountingPoliciesChangeinAccountingPrincipleDetails Nature of Operations and Summary of Significant Accounting Policies - Change in Accounting Principle (Details) Details 56 false false R57.htm 9955534 - Disclosure - Restructuring - Narrative (Details) Sheet http://www.steris.com/role/RestructuringNarrativeDetails Restructuring - Narrative (Details) Details 57 false false R58.htm 9955535 - Disclosure - Restructuring - Restructuring Expenses (Details) Sheet http://www.steris.com/role/RestructuringRestructuringExpensesDetails Restructuring - Restructuring Expenses (Details) Details 58 false false R59.htm 9955536 - Disclosure - Business Acquisitions and Divestitures - Narrative (Details) Sheet http://www.steris.com/role/BusinessAcquisitionsandDivestituresNarrativeDetails Business Acquisitions and Divestitures - Narrative (Details) Details 59 false false R60.htm 9955537 - Disclosure - Business Acquisitions and Divestitures - Synergy Consideration (Details) Sheet http://www.steris.com/role/BusinessAcquisitionsandDivestituresSynergyConsiderationDetails Business Acquisitions and Divestitures - Synergy Consideration (Details) Details 60 false false R61.htm 9955538 - Disclosure - Business Acquisitions and Divestitures - Synergy Acquisition (Details) Sheet http://www.steris.com/role/BusinessAcquisitionsandDivestituresSynergyAcquisitionDetails Business Acquisitions and Divestitures - Synergy Acquisition (Details) Details 61 false false R62.htm 9955539 - Disclosure - Discontinued Operations - Narrative (Details) Sheet http://www.steris.com/role/DiscontinuedOperationsNarrativeDetails Discontinued Operations - Narrative (Details) Details 62 false false R63.htm 9955540 - Disclosure - Discontinued Operations - Summary of Pre-Tax Income of Discontinued Operations (Details) Sheet http://www.steris.com/role/DiscontinuedOperationsSummaryofPreTaxIncomeofDiscontinuedOperationsDetails Discontinued Operations - Summary of Pre-Tax Income of Discontinued Operations (Details) Details 63 false false R64.htm 9955541 - Disclosure - Discontinued Operations - Summary of Significant Non-Cash Operating Items and Capital Expenditures Related to Discontinued Operations (Details) Sheet http://www.steris.com/role/DiscontinuedOperationsSummaryofSignificantNonCashOperatingItemsandCapitalExpendituresRelatedtoDiscontinuedOperationsDetails Discontinued Operations - Summary of Significant Non-Cash Operating Items and Capital Expenditures Related to Discontinued Operations (Details) Details 64 false false R65.htm 9955542 - Disclosure - Goodwill and Intangible Assets - Narrative (Details) Sheet http://www.steris.com/role/GoodwillandIntangibleAssetsNarrativeDetails Goodwill and Intangible Assets - Narrative (Details) Details 65 false false R66.htm 9955543 - Disclosure - Goodwill and Intangible Assets Goodwill Rollforward (Details) Sheet http://www.steris.com/role/GoodwillandIntangibleAssetsGoodwillRollforwardDetails Goodwill and Intangible Assets Goodwill Rollforward (Details) Details 66 false false R67.htm 9955544 - Disclosure - Goodwill and Intangible Assets Other Intangible Assets (Details) Sheet http://www.steris.com/role/GoodwillandIntangibleAssetsOtherIntangibleAssetsDetails Goodwill and Intangible Assets Other Intangible Assets (Details) Details 67 false false R68.htm 9955545 - Disclosure - Goodwill and Intangible Assets Future Amortization of Intangible Assets (Details) Sheet http://www.steris.com/role/GoodwillandIntangibleAssetsFutureAmortizationofIntangibleAssetsDetails Goodwill and Intangible Assets Future Amortization of Intangible Assets (Details) Details 68 false false R69.htm 9955546 - Disclosure - Inventories, Net (Details) Sheet http://www.steris.com/role/InventoriesNetDetails Inventories, Net (Details) Details http://www.steris.com/role/InventoriesNetTables 69 false false R70.htm 9955547 - Disclosure - Property, Plant and Equipment (Details) Sheet http://www.steris.com/role/PropertyPlantandEquipmentDetails Property, Plant and Equipment (Details) Details http://www.steris.com/role/PropertyPlantandEquipmentTables 70 false false R71.htm 9955548 - Disclosure - Debt - Indebtedness (Details) Sheet http://www.steris.com/role/DebtIndebtednessDetails Debt - Indebtedness (Details) Details 71 false false R72.htm 9955549 - Disclosure - Debt - Narrative (Details) Sheet http://www.steris.com/role/DebtNarrativeDetails Debt - Narrative (Details) Details 72 false false R73.htm 9955550 - Disclosure - Debt 2017 Senior Notes (Details) Notes http://www.steris.com/role/Debt2017SeniorNotesDetails Debt 2017 Senior Notes (Details) Details 73 false false R74.htm 9955551 - Disclosure - Debt - Outstanding Debt (Details) Sheet http://www.steris.com/role/DebtOutstandingDebtDetails Debt - Outstanding Debt (Details) Details 74 false false R75.htm 9955552 - Disclosure - Additional Consolidated Balance Sheets Information (Details) Sheet http://www.steris.com/role/AdditionalConsolidatedBalanceSheetsInformationDetails Additional Consolidated Balance Sheets Information (Details) Details http://www.steris.com/role/AdditionalConsolidatedBalanceSheetsInformationTables 75 false false R76.htm 9955553 - Disclosure - Income Taxes - Effective Income Tax Rate Reconciliation: ASU 2023-09 (Details) Sheet http://www.steris.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationASU202309Details Income Taxes - Effective Income Tax Rate Reconciliation: ASU 2023-09 (Details) Details 76 false false R77.htm 9955554 - Disclosure - Income Taxes - Effective Income Tax Rate Reconciliation (Details) Sheet http://www.steris.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationDetails Income Taxes - Effective Income Tax Rate Reconciliation (Details) Details 77 false false R78.htm 9955555 - Disclosure - Income Taxes - Narrative (Details) Sheet http://www.steris.com/role/IncomeTaxesNarrativeDetails Income Taxes - Narrative (Details) Details 78 false false R79.htm 9955556 - Disclosure - Income Taxes - Income From Continuing Operations Before Income Taxes (Details) Sheet http://www.steris.com/role/IncomeTaxesIncomeFromContinuingOperationsBeforeIncomeTaxesDetails Income Taxes - Income From Continuing Operations Before Income Taxes (Details) Details 79 false false R80.htm 9955557 - Disclosure - Income Taxes - Provision for Income Taxes (Details) Sheet http://www.steris.com/role/IncomeTaxesProvisionforIncomeTaxesDetails Income Taxes - Provision for Income Taxes (Details) Details 80 false false R81.htm 9955558 - Disclosure - Income Taxes - Reconciliation of Beginning and Ending Balances of Unrecognized Tax Benefits (Details) Sheet http://www.steris.com/role/IncomeTaxesReconciliationofBeginningandEndingBalancesofUnrecognizedTaxBenefitsDetails Income Taxes - Reconciliation of Beginning and Ending Balances of Unrecognized Tax Benefits (Details) Details 81 false false R82.htm 9955559 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) Sheet http://www.steris.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails Income Taxes - Deferred Tax Assets and Liabilities (Details) Details 82 false false R83.htm 9955560 - Disclosure - Income Taxes - Cash Paid for Income Taxes (Details) Sheet http://www.steris.com/role/IncomeTaxesCashPaidforIncomeTaxesDetails Income Taxes - Cash Paid for Income Taxes (Details) Details 83 false false R84.htm 9955561 - Disclosure - Benefit Plans (Change in benefit obligations funded status) (Details) Sheet http://www.steris.com/role/BenefitPlansChangeinbenefitobligationsfundedstatusDetails Benefit Plans (Change in benefit obligations funded status) (Details) Details http://www.steris.com/role/BenefitPlansTables 84 false false R85.htm 9955562 - Disclosure - Benefit Plans (Amounts recognized in balance sheets) (Details) Sheet http://www.steris.com/role/BenefitPlansAmountsrecognizedinbalancesheetsDetails Benefit Plans (Amounts recognized in balance sheets) (Details) Details http://www.steris.com/role/BenefitPlansTables 85 false false R86.htm 9955563 - Disclosure - Benefit Plans (Amortize pre-tax amount AOCI) (Details) Sheet http://www.steris.com/role/BenefitPlansAmortizepretaxamountAOCIDetails Benefit Plans (Amortize pre-tax amount AOCI) (Details) Details http://www.steris.com/role/BenefitPlansTables 86 false false R87.htm 9955564 - Disclosure - Benefit Plans (Accumulated benefit obligation exceeding the fair value of plan assets) (Details) Sheet http://www.steris.com/role/BenefitPlansAccumulatedbenefitobligationexceedingthefairvalueofplanassetsDetails Benefit Plans (Accumulated benefit obligation exceeding the fair value of plan assets) (Details) Details http://www.steris.com/role/BenefitPlansTables 87 false false R88.htm 9955565 - Disclosure - Benefit Plans (Projected benefit obligation exceeding the fair value of plan assets) (Details) Sheet http://www.steris.com/role/BenefitPlansProjectedbenefitobligationexceedingthefairvalueofplanassetsDetails Benefit Plans (Projected benefit obligation exceeding the fair value of plan assets) (Details) Details http://www.steris.com/role/BenefitPlansTables 88 false false R89.htm 9955566 - Disclosure - Benefit Plans (Components of the annual net periodic benefit cost) (Details) Sheet http://www.steris.com/role/BenefitPlansComponentsoftheannualnetperiodicbenefitcostDetails Benefit Plans (Components of the annual net periodic benefit cost) (Details) Details http://www.steris.com/role/BenefitPlansTables 89 false false R90.htm 9955567 - Disclosure - Benefit Plans (Assumptions used in calculating benefit obligations and net periodic benefit cost) (Details) Sheet http://www.steris.com/role/BenefitPlansAssumptionsusedincalculatingbenefitobligationsandnetperiodicbenefitcostDetails Benefit Plans (Assumptions used in calculating benefit obligations and net periodic benefit cost) (Details) Details http://www.steris.com/role/BenefitPlansTables 90 false false R91.htm 9955568 - Disclosure - Benefit Plans (Significant assumptions used to determine the net periodic benefit costs) (Details) Sheet http://www.steris.com/role/BenefitPlansSignificantassumptionsusedtodeterminethenetperiodicbenefitcostsDetails Benefit Plans (Significant assumptions used to determine the net periodic benefit costs) (Details) Details http://www.steris.com/role/BenefitPlansTables 91 false false R92.htm 9955569 - Disclosure - Benefit Plans (Assumed long-term healthcare cost trend rate) (Details) Sheet http://www.steris.com/role/BenefitPlansAssumedlongtermhealthcarecosttrendrateDetails Benefit Plans (Assumed long-term healthcare cost trend rate) (Details) Details http://www.steris.com/role/BenefitPlansTables 92 false false R93.htm 9955571 - Disclosure - Benefit Plans (Fair value of our pension benefits plan assets) (Details) Sheet http://www.steris.com/role/BenefitPlansFairvalueofourpensionbenefitsplanassetsDetails Benefit Plans (Fair value of our pension benefits plan assets) (Details) Details http://www.steris.com/role/BenefitPlansTables 93 false false R94.htm 9955572 - Disclosure - Benefit Plans (Expected payments to be made to plan participants) (Details) Sheet http://www.steris.com/role/BenefitPlansExpectedpaymentstobemadetoplanparticipantsDetails Benefit Plans (Expected payments to be made to plan participants) (Details) Details http://www.steris.com/role/BenefitPlansTables 94 false false R95.htm 9955573 - Disclosure - Benefit Plans (Narrative) (Details) Sheet http://www.steris.com/role/BenefitPlansNarrativeDetails Benefit Plans (Narrative) (Details) Details http://www.steris.com/role/BenefitPlansTables 95 false false R96.htm 9955574 - Disclosure - Benefit Plans Benefit Plans (Rollforward of Level 3 assets) (Details) Sheet http://www.steris.com/role/BenefitPlansBenefitPlansRollforwardofLevel3assetsDetails Benefit Plans Benefit Plans (Rollforward of Level 3 assets) (Details) Details 96 false false R97.htm 9955575 - Disclosure - Contingencies (Details) Sheet http://www.steris.com/role/ContingenciesDetails Contingencies (Details) Details http://www.steris.com/role/ContingenciesleasetablesTables 97 false false R98.htm 9955576 - Disclosure - Business Segment Information - Narrative (Details) Sheet http://www.steris.com/role/BusinessSegmentInformationNarrativeDetails Business Segment Information - Narrative (Details) Details 98 false false R99.htm 9955577 - Disclosure - Business Segment Information - Income Statement (Details) Sheet http://www.steris.com/role/BusinessSegmentInformationIncomeStatementDetails Business Segment Information - Income Statement (Details) Details 99 false false R100.htm 9955578 - Disclosure - Business Segment Information - Assets (Details) Sheet http://www.steris.com/role/BusinessSegmentInformationAssetsDetails Business Segment Information - Assets (Details) Details 100 false false R101.htm 9955579 - Disclosure - Business Segment Information - Capital Expenditures and Depreciation, Depletion, and Amortization (Details) Sheet http://www.steris.com/role/BusinessSegmentInformationCapitalExpendituresandDepreciationDepletionandAmortizationDetails Business Segment Information - Capital Expenditures and Depreciation, Depletion, and Amortization (Details) Details 101 false false R102.htm 9955580 - Disclosure - Business Segment Information - Information by Geographical Location (Details) Sheet http://www.steris.com/role/BusinessSegmentInformationInformationbyGeographicalLocationDetails Business Segment Information - Information by Geographical Location (Details) Details 102 false false R103.htm 9955581 - Disclosure - Business Segment Information - Revenues (Details) Sheet http://www.steris.com/role/BusinessSegmentInformationRevenuesDetails Business Segment Information - Revenues (Details) Details 103 false false R104.htm 9955582 - Disclosure - Common Shares (Details) Sheet http://www.steris.com/role/CommonSharesDetails Common Shares (Details) Details http://www.steris.com/role/CommonSharesTables 104 false false R105.htm 9955583 - Disclosure - Repurchases of Common Shares (Details) Sheet http://www.steris.com/role/RepurchasesofCommonSharesDetails Repurchases of Common Shares (Details) Details http://www.steris.com/role/RepurchasesofCommonShares 105 false false R106.htm 9955584 - Disclosure - Share-Based Compensation - Narrative (Details) Sheet http://www.steris.com/role/ShareBasedCompensationNarrativeDetails Share-Based Compensation - Narrative (Details) Details 106 false false R107.htm 9955585 - Disclosure - Share-Based Compensation (Details) Sheet http://www.steris.com/role/ShareBasedCompensationDetails Share-Based Compensation (Details) Details http://www.steris.com/role/ShareBasedCompensationTables 107 false false R108.htm 9955586 - Disclosure - Financial and Other Guarantees (Details) Sheet http://www.steris.com/role/FinancialandOtherGuaranteesDetails Financial and Other Guarantees (Details) Details http://www.steris.com/role/FinancialandOtherGuaranteesTables 108 false false R109.htm 9955587 - Disclosure - Forward and Swap Contracts (Details) Sheet http://www.steris.com/role/ForwardandSwapContractsDetails Forward and Swap Contracts (Details) Details http://www.steris.com/role/ForwardandSwapContractsTables 109 false false R110.htm 9955588 - Disclosure - Fair Value Measurements (Details) Sheet http://www.steris.com/role/FairValueMeasurementsDetails Fair Value Measurements (Details) Details http://www.steris.com/role/FairValueMeasurementsTables 110 false false R111.htm 9955589 - Disclosure - Reclassifications out of AOCI (Details) Sheet http://www.steris.com/role/ReclassificationsoutofAOCIDetails Reclassifications out of AOCI (Details) Details http://www.steris.com/role/ReclassificationsoutofAOCITables 111 false false R112.htm 9955590 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Details) Sheet http://www.steris.com/role/ScheduleIIValuationandQualifyingAccountsDetails Schedule II - Valuation and Qualifying Accounts (Details) Details http://www.steris.com/role/ScheduleIIValuationandQualifyingAccounts 112 false false All Reports Book All Reports ste-20260331.htm ste-20260331.xsd ste-20260331_cal.xml ste-20260331_def.xml ste-20260331_lab.xml ste-20260331_pre.xml http://fasb.org/srt/2026 http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/cyd/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 true true