3.26.1 html 463 548 1 false 121 0 false 7 false false R1.htm 995200090 - Document - Document and Entity Information Sheet http://www.aarcorp.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 995200100 - Statement - CONSOLIDATED STATEMENTS OF INCOME Sheet http://www.aarcorp.com/role/StatementConsolidatedStatementsOfIncome CONSOLIDATED STATEMENTS OF INCOME Statements 2 false false R3.htm 995200200 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://www.aarcorp.com/role/StatementConsolidatedStatementsOfComprehensiveIncome CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 3 false false R4.htm 995200300 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.aarcorp.com/role/StatementConsolidatedBalanceSheets CONSOLIDATED BALANCE SHEETS Statements 4 false false R5.htm 995200305 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.aarcorp.com/role/StatementConsolidatedBalanceSheetsParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 5 false false R6.htm 995200400 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Sheet http://www.aarcorp.com/role/StatementConsolidatedStatementsOfChangesInEquity CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Statements 6 false false R7.htm 995200500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.aarcorp.com/role/StatementConsolidatedStatementsOfCashFlows CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 7 false false R8.htm 995210101 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 995210201 - Disclosure - Acquisitions Sheet http://www.aarcorp.com/role/DisclosureAcquisitions Acquisitions Notes 9 false false R10.htm 995210301 - Disclosure - Goodwill and Other Intangible Assets, Net Sheet http://www.aarcorp.com/role/DisclosureGoodwillAndOtherIntangibleAssetsNet Goodwill and Other Intangible Assets, Net Notes 10 false false R11.htm 995210401 - Disclosure - Sale of Receivables Sheet http://www.aarcorp.com/role/DisclosureSaleOfReceivables Sale of Receivables Notes 11 false false R12.htm 995210501 - Disclosure - Financing Arrangements Sheet http://www.aarcorp.com/role/DisclosureFinancingArrangements Financing Arrangements Notes 12 false false R13.htm 995210601 - Disclosure - Equity Sheet http://www.aarcorp.com/role/DisclosureEquity Equity Notes 13 false false R14.htm 995210701 - Disclosure - Income Taxes Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxes Income Taxes Notes 14 false false R15.htm 995210801 - Disclosure - Employee Benefit Plans Sheet http://www.aarcorp.com/role/DisclosureEmployeeBenefitPlans Employee Benefit Plans Notes 15 false false R16.htm 995210901 - Disclosure - Accumulated Other Comprehensive Loss Sheet http://www.aarcorp.com/role/DisclosureAccumulatedOtherComprehensiveLoss Accumulated Other Comprehensive Loss Notes 16 false false R17.htm 995211001 - Disclosure - Other Non-current Assets Sheet http://www.aarcorp.com/role/DisclosureOtherNonCurrentAssets Other Non-current Assets Notes 17 false false R18.htm 995211101 - Disclosure - Leases Sheet http://www.aarcorp.com/role/DisclosureLeases Leases Notes 18 false false R19.htm 995211201 - Disclosure - Commitments Sheet http://www.aarcorp.com/role/DisclosureCommitments Commitments Notes 19 false false R20.htm 995211301 - Disclosure - Government Subsidies Sheet http://www.aarcorp.com/role/DisclosureGovernmentSubsidies Government Subsidies Notes 20 false false R21.htm 995211401 - Disclosure - Divestitures Sheet http://www.aarcorp.com/role/DisclosureDivestitures Divestitures Notes 21 false false R22.htm 995211501 - Disclosure - Business Segment Information Sheet http://www.aarcorp.com/role/DisclosureBusinessSegmentInformation Business Segment Information Notes 22 false false R23.htm 995211601 - Disclosure - Legal Proceedings and Other Matters Sheet http://www.aarcorp.com/role/DisclosureLegalProceedingsAndOtherMatters Legal Proceedings and Other Matters Notes 23 false false R24.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 24 false false R25.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 25 false false R26.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 26 false false R27.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 27 false false R28.htm 99920102 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPolicies 28 false false R29.htm 99930103 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPolicies 29 false false R30.htm 99930203 - Disclosure - Acquisitions (Tables) Sheet http://www.aarcorp.com/role/DisclosureAcquisitionsTables Acquisitions (Tables) Tables http://www.aarcorp.com/role/DisclosureAcquisitions 30 false false R31.htm 99930303 - Disclosure - Goodwill and Other Intangible Assets, Net (Tables) Sheet http://www.aarcorp.com/role/DisclosureGoodwillAndOtherIntangibleAssetsNetTables Goodwill and Other Intangible Assets, Net (Tables) Tables http://www.aarcorp.com/role/DisclosureGoodwillAndOtherIntangibleAssetsNet 31 false false R32.htm 99930503 - Disclosure - Financing Arrangements (Tables) Sheet http://www.aarcorp.com/role/DisclosureFinancingArrangementsTables Financing Arrangements (Tables) Tables http://www.aarcorp.com/role/DisclosureFinancingArrangements 32 false false R33.htm 99930603 - Disclosure - Equity (Tables) Sheet http://www.aarcorp.com/role/DisclosureEquityTables Equity (Tables) Tables http://www.aarcorp.com/role/DisclosureEquity 33 false false R34.htm 99930703 - Disclosure - Income Taxes (Tables) Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.aarcorp.com/role/DisclosureIncomeTaxes 34 false false R35.htm 99930803 - Disclosure - Employee Benefit Plans (Tables) Sheet http://www.aarcorp.com/role/DisclosureEmployeeBenefitPlansTables Employee Benefit Plans (Tables) Tables http://www.aarcorp.com/role/DisclosureEmployeeBenefitPlans 35 false false R36.htm 99930903 - Disclosure - Accumulated Other Comprehensive Loss (Tables) Sheet http://www.aarcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossTables Accumulated Other Comprehensive Loss (Tables) Tables http://www.aarcorp.com/role/DisclosureAccumulatedOtherComprehensiveLoss 36 false false R37.htm 99931003 - Disclosure - Other Non-current Assets (Tables) Sheet http://www.aarcorp.com/role/DisclosureOtherNonCurrentAssetsTables Other Non-current Assets (Tables) Tables http://www.aarcorp.com/role/DisclosureOtherNonCurrentAssets 37 false false R38.htm 99931103 - Disclosure - Leases (Tables) Sheet http://www.aarcorp.com/role/DisclosureLeasesTables Leases (Tables) Tables http://www.aarcorp.com/role/DisclosureLeases 38 false false R39.htm 99931503 - Disclosure - Business Segment Information (Tables) Sheet http://www.aarcorp.com/role/DisclosureBusinessSegmentInformationTables Business Segment Information (Tables) Tables http://www.aarcorp.com/role/DisclosureBusinessSegmentInformation 39 false false R40.htm 99940101 - Disclosure - Summary of Significant Accounting Policies - Revenue Recognition and Cumulative Catch-up Adjustments (Details) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionAndCumulativeCatchUpAdjustmentsDetails Summary of Significant Accounting Policies - Revenue Recognition and Cumulative Catch-up Adjustments (Details) Details 40 false false R41.htm 99940102 - Disclosure - Summary of Significant Accounting Policies - Contract Assets, Liabilities and Performance Obligations (Details) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesContractAssetsLiabilitiesAndPerformanceObligationsDetails Summary of Significant Accounting Policies - Contract Assets, Liabilities and Performance Obligations (Details) Details 41 false false R42.htm 99940103 - Disclosure - Summary of Significant Accounting Policies - Financial Instruments (Details) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFinancialInstrumentsDetails Summary of Significant Accounting Policies - Financial Instruments (Details) Details 42 false false R43.htm 99940104 - Disclosure - Summary of Significant Accounting Policies - Allowance for Credit Losses, Including Product Return Reserves (Details) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesAllowanceForCreditLossesIncludingProductReturnReservesDetails Summary of Significant Accounting Policies - Allowance for Credit Losses, Including Product Return Reserves (Details) Details 43 false false R44.htm 99940105 - Disclosure - Summary of Significant Accounting Policies - Cash and Inventories (Details) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesCashAndInventoriesDetails Summary of Significant Accounting Policies - Cash and Inventories (Details) Details 44 false false R45.htm 99940106 - Disclosure - Summary of Significant Accounting Policies - Property, Plant and Equipment and Investments (Details) Sheet http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyPlantAndEquipmentAndInvestmentsDetails Summary of Significant Accounting Policies - Property, Plant and Equipment and Investments (Details) Details 45 false false R46.htm 99940201 - Disclosure - Acquisitions (Details) Sheet http://www.aarcorp.com/role/DisclosureAcquisitionsDetails Acquisitions (Details) Details http://www.aarcorp.com/role/DisclosureAcquisitionsTables 46 false false R47.htm 99940202 - Disclosure - Acquisitions - Fair value of assets acquired and liabilities (Details) Sheet http://www.aarcorp.com/role/DisclosureAcquisitionsFairValueOfAssetsAcquiredAndLiabilitiesDetails Acquisitions - Fair value of assets acquired and liabilities (Details) Details 47 false false R48.htm 99940301 - Disclosure - Goodwill and Other Intangible Assets, Net (Details) Sheet http://www.aarcorp.com/role/DisclosureGoodwillAndOtherIntangibleAssetsNetDetails Goodwill and Other Intangible Assets, Net (Details) Details http://www.aarcorp.com/role/DisclosureGoodwillAndOtherIntangibleAssetsNetTables 48 false false R49.htm 99940302 - Disclosure - Goodwill and Other Intangible Assets, Net - Intangible assets (Details) Sheet http://www.aarcorp.com/role/DisclosureGoodwillAndOtherIntangibleAssetsNetIntangibleAssetsDetails Goodwill and Other Intangible Assets, Net - Intangible assets (Details) Details 49 false false R50.htm 99940303 - Disclosure - Goodwill and Other Intangible Assets, Net - Aggregate amortization expense (Details) Sheet http://www.aarcorp.com/role/DisclosureGoodwillAndOtherIntangibleAssetsNetAggregateAmortizationExpenseDetails Goodwill and Other Intangible Assets, Net - Aggregate amortization expense (Details) Details 50 false false R51.htm 99940401 - Disclosure - Sale of Receivables (Details) Sheet http://www.aarcorp.com/role/DisclosureSaleOfReceivablesDetails Sale of Receivables (Details) Details http://www.aarcorp.com/role/DisclosureSaleOfReceivables 51 false false R52.htm 99940501 - Disclosure - Financing Arrangements (Details) Sheet http://www.aarcorp.com/role/DisclosureFinancingArrangementsDetails Financing Arrangements (Details) Details http://www.aarcorp.com/role/DisclosureFinancingArrangementsTables 52 false false R53.htm 99940601 - Disclosure - Equity - Common Stock Offering (Details) Sheet http://www.aarcorp.com/role/DisclosureEquityCommonStockOfferingDetails Equity - Common Stock Offering (Details) Details 53 false false R54.htm 99940602 - Disclosure - Equity - Stock based compensation and stock options (Details) Sheet http://www.aarcorp.com/role/DisclosureEquityStockBasedCompensationAndStockOptionsDetails Equity - Stock based compensation and stock options (Details) Details 54 false false R55.htm 99940603 - Disclosure - Equity - Stock Options (Details) Sheet http://www.aarcorp.com/role/DisclosureEquityStockOptionsDetails Equity - Stock Options (Details) Details 55 false false R56.htm 99940604 - Disclosure - Equity - Restricted stock (Details) Sheet http://www.aarcorp.com/role/DisclosureEquityRestrictedStockDetails Equity - Restricted stock (Details) Details 56 false false R57.htm 99940605 - Disclosure - Equity - Earnings Per Share (Details) Sheet http://www.aarcorp.com/role/DisclosureEquityEarningsPerShareDetails Equity - Earnings Per Share (Details) Details 57 false false R58.htm 99940606 - Disclosure - Equity - Treasury Stock (Details) Sheet http://www.aarcorp.com/role/DisclosureEquityTreasuryStockDetails Equity - Treasury Stock (Details) Details 58 false false R59.htm 99940701 - Disclosure - Income Taxes - Income Tax Expense (Details) Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxesIncomeTaxExpenseDetails Income Taxes - Income Tax Expense (Details) Details 59 false false R60.htm 99940702 - Disclosure - Income Taxes - Income (Loss) before income tax expense (Details) Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxesIncomeLossBeforeIncomeTaxExpenseDetails Income Taxes - Income (Loss) before income tax expense (Details) Details 60 false false R61.htm 99940703 - Disclosure - Income Taxes - Reconciliation of effective income tax amount and rate (Details) Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxesReconciliationOfEffectiveIncomeTaxAmountAndRateDetails Income Taxes - Reconciliation of effective income tax amount and rate (Details) Details 61 false false R62.htm 99940704 - Disclosure - Income Taxes - Income taxes paid (net of refund) (Details) Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxesIncomeTaxesPaidNetOfRefundDetails Income Taxes - Income taxes paid (net of refund) (Details) Details 62 false false R63.htm 99940705 - Disclosure - Income Taxes - Deferred tax assets and liabilities (Details) Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails Income Taxes - Deferred tax assets and liabilities (Details) Details 63 false false R64.htm 99940706 - Disclosure - Income Taxes (Details) Sheet http://www.aarcorp.com/role/DisclosureIncomeTaxesDetails Income Taxes (Details) Details http://www.aarcorp.com/role/DisclosureIncomeTaxesTables 64 false false R65.htm 99940801 - Disclosure - Employee Benefit Plans (Details) Sheet http://www.aarcorp.com/role/DisclosureEmployeeBenefitPlansDetails Employee Benefit Plans (Details) Details http://www.aarcorp.com/role/DisclosureEmployeeBenefitPlansTables 65 false false R66.htm 99940802 - Disclosure - Employee Benefit Plans - Reconciliation of Pension Assets (Details) Sheet http://www.aarcorp.com/role/DisclosureEmployeeBenefitPlansReconciliationOfPensionAssetsDetails Employee Benefit Plans - Reconciliation of Pension Assets (Details) Details 66 false false R67.htm 99940803 - Disclosure - Employee Benefit Plans - Future Benefit Payments and Defined Contribution Plan (Details) Sheet http://www.aarcorp.com/role/DisclosureEmployeeBenefitPlansFutureBenefitPaymentsAndDefinedContributionPlanDetails Employee Benefit Plans - Future Benefit Payments and Defined Contribution Plan (Details) Details 67 false false R68.htm 99940901 - Disclosure - Accumulated Other Comprehensive Loss (Details) Sheet http://www.aarcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossDetails Accumulated Other Comprehensive Loss (Details) Details http://www.aarcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossTables 68 false false R69.htm 99941001 - Disclosure - Other Non-current Assets (Details) Sheet http://www.aarcorp.com/role/DisclosureOtherNonCurrentAssetsDetails Other Non-current Assets (Details) Details http://www.aarcorp.com/role/DisclosureOtherNonCurrentAssetsTables 69 false false R70.htm 99941002 - Disclosure - Other Non-current Assets - Investments in Joint Ventures (Details) Sheet http://www.aarcorp.com/role/DisclosureOtherNonCurrentAssetsInvestmentsInJointVenturesDetails Other Non-current Assets - Investments in Joint Ventures (Details) Details 70 false false R71.htm 99941101 - Disclosure - Leases (Details) Sheet http://www.aarcorp.com/role/DisclosureLeasesDetails Leases (Details) Details http://www.aarcorp.com/role/DisclosureLeasesTables 71 false false R72.htm 99941102 - Disclosure - Leases - Maturities (Details) Sheet http://www.aarcorp.com/role/DisclosureLeasesMaturitiesDetails Leases - Maturities (Details) Details 72 false false R73.htm 99941103 - Disclosure - Leases - Remaining lease term and discount rate (Details) Sheet http://www.aarcorp.com/role/DisclosureLeasesRemainingLeaseTermAndDiscountRateDetails Leases - Remaining lease term and discount rate (Details) Details 73 false false R74.htm 99941104 - Disclosure - Leases - Supplemental cash flow information (Details) Sheet http://www.aarcorp.com/role/DisclosureLeasesSupplementalCashFlowInformationDetails Leases - Supplemental cash flow information (Details) Details 74 false false R75.htm 99941201 - Disclosure - Commitments (Details) Sheet http://www.aarcorp.com/role/DisclosureCommitmentsDetails Commitments (Details) Details http://www.aarcorp.com/role/DisclosureCommitments 75 false false R76.htm 99941301 - Disclosure - Government Subsidies (Details) Sheet http://www.aarcorp.com/role/DisclosureGovernmentSubsidiesDetails Government Subsidies (Details) Details http://www.aarcorp.com/role/DisclosureGovernmentSubsidies 76 false false R77.htm 99941401 - Disclosure - Divestitures (Details) Sheet http://www.aarcorp.com/role/DisclosureDivestituresDetails Divestitures (Details) Details http://www.aarcorp.com/role/DisclosureDivestitures 77 false false R78.htm 99941501 - Disclosure - Business Segment Information - Significant expenses for each segment (Details) Sheet http://www.aarcorp.com/role/DisclosureBusinessSegmentInformationSignificantExpensesForEachSegmentDetails Business Segment Information - Significant expenses for each segment (Details) Details 78 false false R79.htm 99941502 - Disclosure - Business Segment Information - Sales and Gross Profit (Details) Sheet http://www.aarcorp.com/role/DisclosureBusinessSegmentInformationSalesAndGrossProfitDetails Business Segment Information - Sales and Gross Profit (Details) Details 79 false false R80.htm 99941503 - Disclosure - Business Segment Information - Customers Percentage of Sales (Details) Sheet http://www.aarcorp.com/role/DisclosureBusinessSegmentInformationCustomersPercentageOfSalesDetails Business Segment Information - Customers Percentage of Sales (Details) Details 80 false false R81.htm 99941504 - Disclosure - Business Segment Information - Geographic Data (Details) Sheet http://www.aarcorp.com/role/DisclosureBusinessSegmentInformationGeographicDataDetails Business Segment Information - Geographic Data (Details) Details 81 false false R82.htm 99941505 - Disclosure - Business Segment Information - Sales by type of product / service (Details) Sheet http://www.aarcorp.com/role/DisclosureBusinessSegmentInformationSalesByTypeOfProductServiceDetails Business Segment Information - Sales by type of product / service (Details) Details 82 false false R83.htm 99941601 - Disclosure - Legal Proceedings and Other Matters (Details) Sheet http://www.aarcorp.com/role/DisclosureLegalProceedingsAndOtherMattersDetails Legal Proceedings and Other Matters (Details) Details http://www.aarcorp.com/role/DisclosureLegalProceedingsAndOtherMatters 83 false false All Reports Book All Reports air-20260531.xsd air-20260531_cal.xml air-20260531_def.xml air-20260531_lab.xml air-20260531_pre.xml air-20260531x10k.htm air-20260531x10k002.jpg 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