3.24.0.1 html 425 505 1 false 91 0 false 4 false false R1.htm 0000001 - Document - Cover Page Sheet http://www.allegion.com/role/CoverPage Cover Page Cover 1 false false R2.htm 0000002 - Document - Audit Information Sheet http://www.allegion.com/role/AuditInformation Audit Information Cover 2 false false R3.htm 0000003 - Statement - Consolidated Statements of Comprehensive Income Sheet http://www.allegion.com/role/ConsolidatedStatementsofComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 3 false false R4.htm 0000004 - Statement - Consolidated Balance Sheets Sheet http://www.allegion.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets Statements 4 false false R5.htm 0000005 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.allegion.com/role/ConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 5 false false R6.htm 0000006 - Statement - Consolidated Statements of Equity Sheet http://www.allegion.com/role/ConsolidatedStatementsofEquity Consolidated Statements of Equity Statements 6 false false R7.htm 0000007 - Statement - Consolidated Statements of Cash Flows Sheet http://www.allegion.com/role/ConsolidatedStatementsofCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 0000008 - Disclosure - Description of Company Sheet http://www.allegion.com/role/DescriptionofCompany Description of Company Notes 8 false false R9.htm 0000009 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.allegion.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 0000010 - Disclosure - Acquisitions Sheet http://www.allegion.com/role/Acquisitions Acquisitions Notes 10 false false R11.htm 0000011 - Disclosure - Inventories Sheet http://www.allegion.com/role/Inventories Inventories Notes 11 false false R12.htm 0000012 - Disclosure - Property, Plant and Equipment Sheet http://www.allegion.com/role/PropertyPlantandEquipment Property, Plant and Equipment Notes 12 false false R13.htm 0000013 - Disclosure - Goodwill Sheet http://www.allegion.com/role/Goodwill Goodwill Notes 13 false false R14.htm 0000014 - Disclosure - Intangible Assets Sheet http://www.allegion.com/role/IntangibleAssets Intangible Assets Notes 14 false false R15.htm 0000015 - Disclosure - Divestitures Sheet http://www.allegion.com/role/Divestitures Divestitures Notes 15 false false R16.htm 0000016 - Disclosure - Debt and Credit Facilities Sheet http://www.allegion.com/role/DebtandCreditFacilities Debt and Credit Facilities Notes 16 false false R17.htm 0000017 - Disclosure - Financial Instruments Sheet http://www.allegion.com/role/FinancialInstruments Financial Instruments Notes 17 false false R18.htm 0000018 - Disclosure - Leases Sheet http://www.allegion.com/role/Leases Leases Notes 18 false false R19.htm 0000019 - Disclosure - Pensions and Postretirement Benefits Sheet http://www.allegion.com/role/PensionsandPostretirementBenefits Pensions and Postretirement Benefits Notes 19 false false R20.htm 0000020 - Disclosure - Fair Value Measurements Sheet http://www.allegion.com/role/FairValueMeasurements Fair Value Measurements Notes 20 false false R21.htm 0000021 - Disclosure - Equity Sheet http://www.allegion.com/role/Equity Equity Notes 21 false false R22.htm 0000022 - Disclosure - Share-Based Compensation Sheet http://www.allegion.com/role/ShareBasedCompensation Share-Based Compensation Notes 22 false false R23.htm 0000023 - Disclosure - Restructuring Activities Sheet http://www.allegion.com/role/RestructuringActivities Restructuring Activities Notes 23 false false R24.htm 0000024 - Disclosure - Other, Net Sheet http://www.allegion.com/role/OtherNet Other, Net Notes 24 false false R25.htm 0000025 - Disclosure - Income Taxes Sheet http://www.allegion.com/role/IncomeTaxes Income Taxes Notes 25 false false R26.htm 0000026 - Disclosure - Earnings Per Share (EPS) Sheet http://www.allegion.com/role/EarningsPerShareEPS Earnings Per Share (EPS) Notes 26 false false R27.htm 0000027 - Disclosure - Net Revenues Sheet http://www.allegion.com/role/NetRevenues Net Revenues Notes 27 false false R28.htm 0000028 - Disclosure - Commitments and Contingencies Sheet http://www.allegion.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 28 false false R29.htm 0000029 - Disclosure - Business Segment Information Sheet http://www.allegion.com/role/BusinessSegmentInformation Business Segment Information Notes 29 false false R30.htm 0000030 - Disclosure - Subsequent Events Sheet http://www.allegion.com/role/SubsequentEvents Subsequent Events Notes 30 false false R31.htm 0000031 - Disclosure - Valuation and Qualifying Accounts Sheet http://www.allegion.com/role/ValuationandQualifyingAccounts Valuation and Qualifying Accounts Notes 31 false false R32.htm 0000032 - Disclosure - Summary of Significant Accounting Policies (Policy) Sheet http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesPolicy Summary of Significant Accounting Policies (Policy) Policies http://www.allegion.com/role/SummaryofSignificantAccountingPolicies 32 false false R33.htm 0000033 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.allegion.com/role/SummaryofSignificantAccountingPolicies 33 false false R34.htm 0000034 - Disclosure - Acquisitions (Tables) Sheet http://www.allegion.com/role/AcquisitionsTables Acquisitions (Tables) Tables http://www.allegion.com/role/Acquisitions 34 false false R35.htm 0000035 - Disclosure - Inventories (Tables) Sheet http://www.allegion.com/role/InventoriesTables Inventories (Tables) Tables http://www.allegion.com/role/Inventories 35 false false R36.htm 0000036 - Disclosure - Property, Plant and Equipment (Tables) Sheet http://www.allegion.com/role/PropertyPlantandEquipmentTables Property, Plant and Equipment (Tables) Tables http://www.allegion.com/role/PropertyPlantandEquipment 36 false false R37.htm 0000037 - Disclosure - Goodwill (Tables) Sheet http://www.allegion.com/role/GoodwillTables Goodwill (Tables) Tables http://www.allegion.com/role/Goodwill 37 false false R38.htm 0000038 - Disclosure - Intangible Assets (Tables) Sheet http://www.allegion.com/role/IntangibleAssetsTables Intangible Assets (Tables) Tables http://www.allegion.com/role/IntangibleAssets 38 false false R39.htm 0000039 - Disclosure - Debt and Credit Facilities (Tables) Sheet http://www.allegion.com/role/DebtandCreditFacilitiesTables Debt and Credit Facilities (Tables) Tables http://www.allegion.com/role/DebtandCreditFacilities 39 false false R40.htm 0000040 - Disclosure - Leases (Tables) Sheet http://www.allegion.com/role/LeasesTables Leases (Tables) Tables http://www.allegion.com/role/Leases 40 false false R41.htm 0000041 - Disclosure - Pensions and Postretirement Benefits (Tables) Sheet http://www.allegion.com/role/PensionsandPostretirementBenefitsTables Pensions and Postretirement Benefits (Tables) Tables http://www.allegion.com/role/PensionsandPostretirementBenefits 41 false false R42.htm 0000042 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.allegion.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.allegion.com/role/FairValueMeasurements 42 false false R43.htm 0000043 - Disclosure - Equity (Tables) Sheet http://www.allegion.com/role/EquityTables Equity (Tables) Tables http://www.allegion.com/role/Equity 43 false false R44.htm 0000044 - Disclosure - Share-Based Compensation (Tables) Sheet http://www.allegion.com/role/ShareBasedCompensationTables Share-Based Compensation (Tables) Tables http://www.allegion.com/role/ShareBasedCompensation 44 false false R45.htm 0000045 - Disclosure - Restructuring Activities (Tables) Sheet http://www.allegion.com/role/RestructuringActivitiesTables Restructuring Activities (Tables) Tables http://www.allegion.com/role/RestructuringActivities 45 false false R46.htm 0000046 - Disclosure - Other, Net (Tables) Sheet http://www.allegion.com/role/OtherNetTables Other, Net (Tables) Tables http://www.allegion.com/role/OtherNet 46 false false R47.htm 0000047 - Disclosure - Income Taxes (Tables) Sheet http://www.allegion.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.allegion.com/role/IncomeTaxes 47 false false R48.htm 0000048 - Disclosure - Earnings Per Share (EPS) (Tables) Sheet http://www.allegion.com/role/EarningsPerShareEPSTables Earnings Per Share (EPS) (Tables) Tables http://www.allegion.com/role/EarningsPerShareEPS 48 false false R49.htm 0000049 - Disclosure - Net Revenues (Tables) Sheet http://www.allegion.com/role/NetRevenuesTables Net Revenues (Tables) Tables http://www.allegion.com/role/NetRevenues 49 false false R50.htm 0000050 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.allegion.com/role/CommitmentsandContingenciesTables Commitments and Contingencies (Tables) Tables http://www.allegion.com/role/CommitmentsandContingencies 50 false false R51.htm 0000051 - Disclosure - Business Segment Information (Tables) Sheet http://www.allegion.com/role/BusinessSegmentInformationTables Business Segment Information (Tables) Tables http://www.allegion.com/role/BusinessSegmentInformation 51 false false R52.htm 0000052 - Disclosure - Valuation and Qualifying Accounts (Tables) Sheet http://www.allegion.com/role/ValuationandQualifyingAccountsTables Valuation and Qualifying Accounts (Tables) Tables http://www.allegion.com/role/ValuationandQualifyingAccounts 52 false false R53.htm 0000053 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Details) Sheet http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails Summary of Significant Accounting Policies (Narrative) (Details) Details http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesTables 53 false false R54.htm 0000054 - Disclosure - Summary of Significant Accounting Policies (Depreciation) (Details) Sheet http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesDepreciationDetails Summary of Significant Accounting Policies (Depreciation) (Details) Details http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesTables 54 false false R55.htm 0000055 - Disclosure - Summary of Significant Accounting Policies (Weighted-Average) (Details) Sheet http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesWeightedAverageDetails Summary of Significant Accounting Policies (Weighted-Average) (Details) Details http://www.allegion.com/role/SummaryofSignificantAccountingPoliciesTables 55 false false R56.htm 0000056 - Disclosure - Acquisitions (Recognized Identified Assets Acquired and Liabilities Assumed) (Details) Sheet http://www.allegion.com/role/AcquisitionsRecognizedIdentifiedAssetsAcquiredandLiabilitiesAssumedDetails Acquisitions (Recognized Identified Assets Acquired and Liabilities Assumed) (Details) Details http://www.allegion.com/role/AcquisitionsTables 56 false false R57.htm 0000057 - Disclosure - Acquisitions (Finite-Lived Intangible Assets Acquired as Part of Business Combination) (Details) Sheet http://www.allegion.com/role/AcquisitionsFiniteLivedIntangibleAssetsAcquiredasPartofBusinessCombinationDetails Acquisitions (Finite-Lived Intangible Assets Acquired as Part of Business Combination) (Details) Details http://www.allegion.com/role/AcquisitionsTables 57 false false R58.htm 0000059 - Disclosure - Acquisitions Narrative (Details) Sheet http://www.allegion.com/role/AcquisitionsNarrativeDetails Acquisitions Narrative (Details) Details 58 false false R59.htm 0000060 - Disclosure - Inventories (Details) Sheet http://www.allegion.com/role/InventoriesDetails Inventories (Details) Details http://www.allegion.com/role/InventoriesTables 59 false false R60.htm 0000061 - Disclosure - Property, Plant and Equipment (Narrative) (Details) Sheet http://www.allegion.com/role/PropertyPlantandEquipmentNarrativeDetails Property, Plant and Equipment (Narrative) (Details) Details http://www.allegion.com/role/PropertyPlantandEquipmentTables 60 false false R61.htm 0000062 - Disclosure - Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) Sheet http://www.allegion.com/role/PropertyPlantandEquipmentScheduleofPropertyPlantandEquipmentDetails Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) Details http://www.allegion.com/role/PropertyPlantandEquipmentTables 61 false false R62.htm 0000063 - Disclosure - Goodwill (Details) Sheet http://www.allegion.com/role/GoodwillDetails Goodwill (Details) Details http://www.allegion.com/role/GoodwillTables 62 false false R63.htm 0000064 - Disclosure - Intangible Assets Table (Details) Sheet http://www.allegion.com/role/IntangibleAssetsTableDetails Intangible Assets Table (Details) Details 63 false false R64.htm 0000065 - Disclosure - Intangible Assets Narrative (Details) Sheet http://www.allegion.com/role/IntangibleAssetsNarrativeDetails Intangible Assets Narrative (Details) Details 64 false false R65.htm 0000066 - Disclosure - Divestitures (Details) Sheet http://www.allegion.com/role/DivestituresDetails Divestitures (Details) Details http://www.allegion.com/role/Divestitures 65 false false R66.htm 0000067 - Disclosure - Debt and Credit Facilities (Summary of Debt) (Details) Sheet http://www.allegion.com/role/DebtandCreditFacilitiesSummaryofDebtDetails Debt and Credit Facilities (Summary of Debt) (Details) Details http://www.allegion.com/role/DebtandCreditFacilitiesTables 66 false false R67.htm 0000068 - Disclosure - Debt and Credit Facilities (Long-Term Debt Maturities and Repayment of Principle) (Details) Sheet http://www.allegion.com/role/DebtandCreditFacilitiesLongTermDebtMaturitiesandRepaymentofPrincipleDetails Debt and Credit Facilities (Long-Term Debt Maturities and Repayment of Principle) (Details) Details http://www.allegion.com/role/DebtandCreditFacilitiesTables 67 false false R68.htm 0000069 - Disclosure - Debt and Credit Facilities (Narrative) (Details) Sheet http://www.allegion.com/role/DebtandCreditFacilitiesNarrativeDetails Debt and Credit Facilities (Narrative) (Details) Details http://www.allegion.com/role/DebtandCreditFacilitiesTables 68 false false R69.htm 0000070 - Disclosure - Financial Instruments (Narrative) (Details) Sheet http://www.allegion.com/role/FinancialInstrumentsNarrativeDetails Financial Instruments (Narrative) (Details) Details http://www.allegion.com/role/FinancialInstruments 69 false false R70.htm 0000071 - Disclosure - Leases - Operating Lease Asset and Liability, Other Information (Details) Sheet http://www.allegion.com/role/LeasesOperatingLeaseAssetandLiabilityOtherInformationDetails Leases - Operating Lease Asset and Liability, Other Information (Details) Details 70 false false R71.htm 0000072 - Disclosure - Leases - Operating Leases, Additional Information (Details) Sheet http://www.allegion.com/role/LeasesOperatingLeasesAdditionalInformationDetails Leases - Operating Leases, Additional Information (Details) Details 71 false false R72.htm 0000073 - Disclosure - Leases - Operating Leases, Liability Maturity (Details) Sheet http://www.allegion.com/role/LeasesOperatingLeasesLiabilityMaturityDetails Leases - Operating Leases, Liability Maturity (Details) Details 72 false false R73.htm 0000074 - Disclosure - Leases - Narrative (Details) Sheet http://www.allegion.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 73 false false R74.htm 0000075 - Disclosure - Pensions (Schedule of Company's Pension Plans) (Details) Sheet http://www.allegion.com/role/PensionsScheduleofCompanysPensionPlansDetails Pensions (Schedule of Company's Pension Plans) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 74 false false R75.htm 0000076 - Disclosure - Pensions (Schedule of Pretax Amounts Recognized in Accumulated Other Comprehensive Income or (Loss)) (Details) Sheet http://www.allegion.com/role/PensionsScheduleofPretaxAmountsRecognizedinAccumulatedOtherComprehensiveIncomeorLossDetails Pensions (Schedule of Pretax Amounts Recognized in Accumulated Other Comprehensive Income or (Loss)) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 75 false false R76.htm 0000077 - Disclosure - Pensions (Schedule of Assumptions Used for Benefit Obligations) (Details) Sheet http://www.allegion.com/role/PensionsScheduleofAssumptionsUsedforBenefitObligationsDetails Pensions (Schedule of Assumptions Used for Benefit Obligations) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 76 false false R77.htm 0000078 - Disclosure - Pensions and Postretirement Benefits Other Than Pensions Pensions (Pension Plans with Accumulated Plan Benefits in excess of Plan Assets (Details) Sheet http://www.allegion.com/role/PensionsandPostretirementBenefitsOtherThanPensionsPensionsPensionPlanswithAccumulatedPlanBenefitsinexcessofPlanAssetsDetails Pensions and Postretirement Benefits Other Than Pensions Pensions (Pension Plans with Accumulated Plan Benefits in excess of Plan Assets (Details) Details 77 false false R78.htm 0000079 - Disclosure - Pensions (Schedule of Defined Benefit Plan Pension Benefit Payments) (Details) Sheet http://www.allegion.com/role/PensionsScheduleofDefinedBenefitPlanPensionBenefitPaymentsDetails Pensions (Schedule of Defined Benefit Plan Pension Benefit Payments) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 78 false false R79.htm 0000080 - Disclosure - Pensions (Schedule of Net Periodic Benefit Cost) (Details) Sheet http://www.allegion.com/role/PensionsScheduleofNetPeriodicBenefitCostDetails Pensions (Schedule of Net Periodic Benefit Cost) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 79 false false R80.htm 0000081 - Disclosure - Pensions (Schedule of Assumptions Used for Net Periodic Pension Cost) (Details) Sheet http://www.allegion.com/role/PensionsScheduleofAssumptionsUsedforNetPeriodicPensionCostDetails Pensions (Schedule of Assumptions Used for Net Periodic Pension Cost) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 80 false false R81.htm 0000082 - Disclosure - Pensions (Schedule of Pension Plan Assets) (Details) Sheet http://www.allegion.com/role/PensionsScheduleofPensionPlanAssetsDetails Pensions (Schedule of Pension Plan Assets) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 81 false false R82.htm 0000083 - Disclosure - Pensions and Postretirement Benefits (Narrative) (Details) Sheet http://www.allegion.com/role/PensionsandPostretirementBenefitsNarrativeDetails Pensions and Postretirement Benefits (Narrative) (Details) Details http://www.allegion.com/role/PensionsandPostretirementBenefitsTables 82 false false R83.htm 0000084 - Disclosure - Fair Value Measurements (Details) Sheet http://www.allegion.com/role/FairValueMeasurementsDetails Fair Value Measurements (Details) Details http://www.allegion.com/role/FairValueMeasurementsTables 83 false false R84.htm 0000085 - Disclosure - Equity (Reconciliation of Ordinary Shares) (Details) Sheet http://www.allegion.com/role/EquityReconciliationofOrdinarySharesDetails Equity (Reconciliation of Ordinary Shares) (Details) Details http://www.allegion.com/role/EquityTables 84 false false R85.htm 0000086 - Disclosure - Equity (Narrative) (Details) Sheet http://www.allegion.com/role/EquityNarrativeDetails Equity (Narrative) (Details) Details http://www.allegion.com/role/EquityTables 85 false false R86.htm 0000087 - Disclosure - Equity (Changes In Accumulated Other Comprehensive Loss (Details) Sheet http://www.allegion.com/role/EquityChangesInAccumulatedOtherComprehensiveLossDetails Equity (Changes In Accumulated Other Comprehensive Loss (Details) Details http://www.allegion.com/role/EquityTables 86 false false R87.htm 0000088 - Disclosure - Share-Based Compensation (Narrative) (Details) Sheet http://www.allegion.com/role/ShareBasedCompensationNarrativeDetails Share-Based Compensation (Narrative) (Details) Details http://www.allegion.com/role/ShareBasedCompensationTables 87 false false R88.htm 0000089 - Disclosure - Share-Based Compensation (Compensation Expense) (Details) Sheet http://www.allegion.com/role/ShareBasedCompensationCompensationExpenseDetails Share-Based Compensation (Compensation Expense) (Details) Details http://www.allegion.com/role/ShareBasedCompensationTables 88 false false R89.htm 0000090 - Disclosure - Share-Based Compensation (Fair Value of Stock Options Assumptions) (Details) Sheet http://www.allegion.com/role/ShareBasedCompensationFairValueofStockOptionsAssumptionsDetails Share-Based Compensation (Fair Value of Stock Options Assumptions) (Details) Details http://www.allegion.com/role/ShareBasedCompensationTables 89 false false R90.htm 0000091 - Disclosure - Share-Based Compensation (Changes in Options Outstanding Under the Plans) (Details) Sheet http://www.allegion.com/role/ShareBasedCompensationChangesinOptionsOutstandingUnderthePlansDetails Share-Based Compensation (Changes in Options Outstanding Under the Plans) (Details) Details http://www.allegion.com/role/ShareBasedCompensationTables 90 false false R91.htm 0000092 - Disclosure - Share-Based Compensation (Information Concerning Currently Outstanding and Exercisable Options) (Details) Sheet http://www.allegion.com/role/ShareBasedCompensationInformationConcerningCurrentlyOutstandingandExercisableOptionsDetails Share-Based Compensation (Information Concerning Currently Outstanding and Exercisable Options) (Details) Details http://www.allegion.com/role/ShareBasedCompensationTables 91 false false R92.htm 0000093 - Disclosure - Share-Based Compensation (RSU Activity During the Year) (Details) Sheet http://www.allegion.com/role/ShareBasedCompensationRSUActivityDuringtheYearDetails Share-Based Compensation (RSU Activity During the Year) (Details) Details http://www.allegion.com/role/ShareBasedCompensationTables 92 false false R93.htm 0000094 - Disclosure - Share-Based Compensation (Performance Shares Rollforward) (Details) Sheet http://www.allegion.com/role/ShareBasedCompensationPerformanceSharesRollforwardDetails Share-Based Compensation (Performance Shares Rollforward) (Details) Details http://www.allegion.com/role/ShareBasedCompensationTables 93 false false R94.htm 0000095 - Disclosure - Restructuring Activities (Restructuring Reserve) (Details) Sheet http://www.allegion.com/role/RestructuringActivitiesRestructuringReserveDetails Restructuring Activities (Restructuring Reserve) (Details) Details http://www.allegion.com/role/RestructuringActivitiesTables 94 false false R95.htm 0000096 - Disclosure - Restructuring Activities (Narrative) (Details) Sheet http://www.allegion.com/role/RestructuringActivitiesNarrativeDetails Restructuring Activities (Narrative) (Details) Details http://www.allegion.com/role/RestructuringActivitiesTables 95 false false R96.htm 0000097 - Disclosure - Other, Net (Details) Sheet http://www.allegion.com/role/OtherNetDetails Other, Net (Details) Details http://www.allegion.com/role/OtherNetTables 96 false false R97.htm 0000098 - Disclosure - Income Taxes (Narrative) (Details) Sheet http://www.allegion.com/role/IncomeTaxesNarrativeDetails Income Taxes (Narrative) (Details) Details http://www.allegion.com/role/IncomeTaxesTables 97 false false R98.htm 0000099 - Disclosure - Income Taxes Schedule of Earnings (Loss) Before Income Taxes (Details) Sheet http://www.allegion.com/role/IncomeTaxesScheduleofEarningsLossBeforeIncomeTaxesDetails Income Taxes Schedule of Earnings (Loss) Before Income Taxes (Details) Details 98 false false R99.htm 0000100 - Disclosure - Income Taxes (Schedule of Components of Provision for Income Taxes) (Details) Sheet http://www.allegion.com/role/IncomeTaxesScheduleofComponentsofProvisionforIncomeTaxesDetails Income Taxes (Schedule of Components of Provision for Income Taxes) (Details) Details http://www.allegion.com/role/IncomeTaxesTables 99 false false R100.htm 0000101 - Disclosure - Income Taxes (Effective Tax Rate Reconciliation) (Details) Sheet http://www.allegion.com/role/IncomeTaxesEffectiveTaxRateReconciliationDetails Income Taxes (Effective Tax Rate Reconciliation) (Details) Details http://www.allegion.com/role/IncomeTaxesTables 100 false false R101.htm 0000102 - Disclosure - Income Taxes (Schedule of Deferred Tax Accounts) (Details) Sheet http://www.allegion.com/role/IncomeTaxesScheduleofDeferredTaxAccountsDetails Income Taxes (Schedule of Deferred Tax Accounts) (Details) Details http://www.allegion.com/role/IncomeTaxesTables 101 false false R102.htm 0000103 - Disclosure - Income Taxes (Operating Loss and Tax Credit Carryforwards) (Details) Sheet http://www.allegion.com/role/IncomeTaxesOperatingLossandTaxCreditCarryforwardsDetails Income Taxes (Operating Loss and Tax Credit Carryforwards) (Details) Details http://www.allegion.com/role/IncomeTaxesTables 102 false false R103.htm 0000104 - Disclosure - Income Taxes (Valuation Allowance) (Details) Sheet http://www.allegion.com/role/IncomeTaxesValuationAllowanceDetails Income Taxes (Valuation Allowance) (Details) Details http://www.allegion.com/role/IncomeTaxesTables 103 false false R104.htm 0000105 - Disclosure - Income Taxes (Unrecognized Tax Benefit) (Details) Sheet http://www.allegion.com/role/IncomeTaxesUnrecognizedTaxBenefitDetails Income Taxes (Unrecognized Tax Benefit) (Details) Details http://www.allegion.com/role/IncomeTaxesTables 104 false false R105.htm 0000106 - Disclosure - Earnings Per Share (EPS) (Details) Sheet http://www.allegion.com/role/EarningsPerShareEPSDetails Earnings Per Share (EPS) (Details) Details http://www.allegion.com/role/EarningsPerShareEPSTables 105 false false R106.htm 0000107 - Disclosure - Net Revenues (Details) Sheet http://www.allegion.com/role/NetRevenuesDetails Net Revenues (Details) Details http://www.allegion.com/role/NetRevenuesTables 106 false false R107.htm 0000108 - Disclosure - Commitments and Contingencies (Narrative) (Details) Sheet http://www.allegion.com/role/CommitmentsandContingenciesNarrativeDetails Commitments and Contingencies (Narrative) (Details) Details http://www.allegion.com/role/CommitmentsandContingenciesTables 107 false false R108.htm 0000109 - Disclosure - Commitments and Contingencies (Standard Product Warranty Liability) (Details) Sheet http://www.allegion.com/role/CommitmentsandContingenciesStandardProductWarrantyLiabilityDetails Commitments and Contingencies (Standard Product Warranty Liability) (Details) Details http://www.allegion.com/role/CommitmentsandContingenciesTables 108 false false R109.htm 0000110 - Disclosure - Business Segment Information (Summary of Operations by Reportable Segments) (Details) Sheet http://www.allegion.com/role/BusinessSegmentInformationSummaryofOperationsbyReportableSegmentsDetails Business Segment Information (Summary of Operations by Reportable Segments) (Details) Details http://www.allegion.com/role/BusinessSegmentInformationTables 109 false false R110.htm 0000111 - Disclosure - Business Segment Information (Schedule of Revenues by Destination) (Details) Sheet http://www.allegion.com/role/BusinessSegmentInformationScheduleofRevenuesbyDestinationDetails Business Segment Information (Schedule of Revenues by Destination) (Details) Details http://www.allegion.com/role/BusinessSegmentInformationTables 110 false false R111.htm 0000112 - Disclosure - Business Segment Information (Schedule of Revenue by Product) (Details) Sheet http://www.allegion.com/role/BusinessSegmentInformationScheduleofRevenuebyProductDetails Business Segment Information (Schedule of Revenue by Product) (Details) Details http://www.allegion.com/role/BusinessSegmentInformationTables 111 false false R112.htm 0000113 - Disclosure - Business Segment Information (Schedule of Long-Lived Asset by Geographic Area) (Details) Sheet http://www.allegion.com/role/BusinessSegmentInformationScheduleofLongLivedAssetbyGeographicAreaDetails Business Segment Information (Schedule of Long-Lived Asset by Geographic Area) (Details) Details http://www.allegion.com/role/BusinessSegmentInformationTables 112 false false R113.htm 0000114 - Disclosure - Business Segment Information Business Segment Information (Narrative) (Details) Sheet http://www.allegion.com/role/BusinessSegmentInformationBusinessSegmentInformationNarrativeDetails Business Segment Information Business Segment Information (Narrative) (Details) Details 113 false false R114.htm 0000115 - Disclosure - Subsequent Events (Details) Sheet http://www.allegion.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://www.allegion.com/role/SubsequentEvents 114 false false R115.htm 0000116 - Disclosure - Valuation and Qualifying Accounts (Details) Sheet http://www.allegion.com/role/ValuationandQualifyingAccountsDetails Valuation and Qualifying Accounts (Details) Details http://www.allegion.com/role/ValuationandQualifyingAccountsTables 115 false false All Reports Book All Reports alle-20231231.htm alle-20231231.xsd alle-20231231_cal.xml alle-20231231_def.xml alle-20231231_lab.xml alle-20231231_pre.xml alle-20231231_g1.jpg alle-20231231_g2.jpg alle-20231231_g3.jpg alle-20231231_g4.jpg alle-20231231_g5.jpg http://fasb.org/srt/2022 http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true