Document And Entity Information Note To Financial Statement Details Textual Statistical Measurement [Axis] Significant Accounting Policies Dividends Payable, Date Declared Note 2 - Earnings Per Share us-gaap_IncomeTaxExpenseBenefit Provision for income taxes Pension Plan [Member] ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Note 3 - Net Sales ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Note 4 - Restructuring Trading Arrangements, by Individual [Table] Note 8 - Supplementary Balance Sheet Information Retirement Benefits [Text Block] Material Terms of Trading Arrangement [Text Block] Note 9 - Goodwill and Other Identifiable Intangible Assets Note 10 - Debt Revenue from Contract with Customer Benchmark [Member] Note 11 - Discontinued Operations Note 12 - Share Plans Note 13 - Shareholders' Equity Note 14 - Segmental Information Minimum [Member] Investments and loans to joint ventures and other affiliates Note 15 - Commitments and Contingencies Statistical Measurement [Domain] Dividends Payable [Table] Note 2 - Earnings Per Share - Schedule of Earnings Per Share (Details) us-gaap_GoodwillImpairedAccumulatedImpairmentLoss Goodwill, Impaired, Accumulated Impairment Loss Maximum [Member] Note 3 - Net Sales - Disaggregation of Revenue (Details) Note 4 - Restructuring - Schedule of Restructuring and Related Costs (Details) Note 4 - Restructuring - Schedule of Restructuring Reserve by Type of Cost (Details) Note 8 - Supplementary Balance Sheet Information - Supplementary Balance Sheet Information (Details) Note 9 - Goodwill and Other Identifiable Intangible Assets - Schedule of Goodwill (Details) Retirement Plan Type [Domain] Note 9 - Goodwill and Other Identifiable Intangible Assets - Schedule of Finite-lived Intangible Assets (Details) Note 10 - Debt - Schedule of Debt (Details) Note 10 - Debt - Schedule of Debt (Details) (Parentheticals) Retirement Plan Type [Axis] Note 11 - Discontinued Operations - Schedule of Discontinued Operations (Details) Note 12 - Share Plans - Schedule of Share-Based Payment Arrangement, Expensed and Capitalized (Details) Note 12 - Share Plans - Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions (Details) Note 13 - Shareholders' Equity - Schedule of Dividends Declared (Details) Top Five Countries [Member] Represents the top five countries. Note 13 - Shareholders' Equity - Schedule of Dividends Declared (Details) (Parentheticals) Net drawdown of bank overdraft Note 14 - Segmental Information - Schedule of Segment Reporting Information (Details) Note 14 - Segmental Information - Schedule of Long-lived Assets by Geographic Areas (Details) us-gaap_IncreaseDecreaseInAssetsHeldForSale Current assets held-for-sale Note 14 - Segmental Information - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) Note 15 - Commitments and Contingencies - Schedule of Other Commitments (Details) Notes To Financial Statements Notes To Financial Statements [Abstract] Rest of Europe [Member] Represents information pertaining to the rest of Europe. us-gaap_EffectiveIncomeTaxRateContinuingOperations Effective Income Tax Rate Reconciliation, Percent Unidentified Environmental Matters [Member] Represents information pertaining to unidentified environmental matters. Condensed Balance Sheet [Table Text Block] Madison, Illinois Location [Member] Represents information pertaining to the Madison, Illinois location. Secured Debt [Member] us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) us-gaap_IncreaseDecreaseInInventories Inventories us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) us-gaap_DefinedBenefitPlanServiceCost Defined Benefit Plan, Service Cost Letter of Credit [Member] Dividends [Axis] Segment Reporting [Text Block] Dividends [Domain] Segment Reporting [Table Text Block] Current liabilities held-for-sale Current liabilities Adjustments to reconcile net income to net cash provided / (used) by operating activities Restructuring Cost [Table] us-gaap_Liabilities Total liabilities Restructuring and Related Costs [Table Text Block] Consolidation Items [Axis] us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and shareholders' equity us-gaap_IncreaseDecreaseInReceivables Accounts and other receivables us-gaap_AllocatedShareBasedCompensationExpense Total share-based compensation charges Share-based compensation charges Segment Reporting [Table] us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation Total liabilities us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepayments and accrued income Condensed Balance Sheet Statement [Table] Share-based compensation charges us-gaap_SellingGeneralAndAdministrativeExpense Selling, general and administrative expenses Subsequent Event [Member] Consolidation Items [Domain] Share-Based Payment Arrangement [Text Block] Changes in assets and liabilities Accounts payable us-gaap_IncreaseDecreaseInAccountsPayable us-gaap_OtherOperatingIncome Other Operating Income Accrued liabilities us-gaap_IncreaseDecreaseInAccruedLiabilities Asia Pacific [Member] Restricted cash us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net increase Effect of exchange rate changes on cash and cash equivalents us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent Deferred consideration payable Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent Contingent liabilities us-gaap_NumberOfReportingUnits Goodwill, Reporting Unit, Number New Accounting Pronouncements, Policy [Policy Text Block] us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash, cash equivalents and restricted cash; beginning of year Cash, cash equivalents and restricted cash; end of the Second quarter Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Table] Statement [Table] Credit Facility [Axis] Credit Facility [Domain] Revolving Credit Facility [Member] us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity Line of Credit Facility, Remaining Borrowing Capacity Environmental Remediation Site [Domain] Environmental Remediation Contingency [Domain] Environmental Remediation Site [Axis] Environmental Remediation Contingency [Axis] Product and Service [Domain] Product and Service [Axis] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table Text Block] us-gaap_RepaymentsOfDebt Repayments of Debt us-gaap_ProceedsFromIssuanceOfDebt Proceeds from Issuance of Debt Commitments and Contingencies Disclosure [Text Block] Statement [Line Items] Common stock, shares issued (in shares) Common stock, shares outstanding (in shares) lxfr_SeveranceAndOtherRestructuringCosts Severance and other costs Amount of severance and other restructuring charges. Common stock, shares authorized (in shares) lxfr_DisposalRelatedCosts Disposal related costs Disposal costs Amount of disposal related costs during the period. Unearned ESOP Shares [Member] Represents information pertaining to unearned ESOP shares. Dividend yield (%) lxfr_UnearnedESOPSharesCost Company shares held by ESOP Cost of unearned ESOP shares. Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Ordinary shares of £0.50 par value; authorized 40,000,000 shares for 2026 and 2025; issued 28,944,000 for 2026 and 2025; outstanding 26,759,241 and 26,640,434 for 2026 and 2025, respectively us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo Finite-Lived Intangible Asset, Expected Amortization, Year Two us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree Finite-Lived Intangible Asset, Expected Amortization, Year Three us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths Finite-Lived Intangible Asset, Expected Amortization, Year One Accounts payable us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour Finite-Lived Intangible Asset, Expected Amortization, Year Four us-gaap_TableTextBlock Notes Tables us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive Finite-Lived Intangible Asset, Expected Amortization, Year Five us-gaap_ComprehensiveIncomeNetOfTax Total comprehensive income Subsequent Events [Text Block] us-gaap_SegmentExpenditureAdditionToLongLivedAssets Segments, capital expenditures Accrued liabilities Concentration Risk Type [Axis] Nonrelated Party [Member] Related Party [Member] Depreciation of right of use assets us-gaap_OperatingLeaseLiabilityNoncurrent Operating lease liability us-gaap_OperatingLeaseLiabilityCurrent Operating lease liability us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent Inventory us-gaap_LongTermDebtCurrent Less current portion Expected life of share options range (years) (Year) Concentration Risk Type [Domain] Capitalization, Equity [Table] Long-term debt Non-current debt CANADA us-gaap_LongTermDebt Total debt GERMANY us-gaap_LossContingencyAccrualAtCarryingValue Loss Contingency Accrual Intangible Asset, Finite-Lived, Class [Axis] Statement of Stockholders' Equity [Abstract] Statement of Comprehensive Income [Abstract] Loss Contingency Nature [Axis] Intangible Asset, Finite-Lived, Class [Domain] Statement of Cash Flows [Abstract] us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent Pension and post-retirement actuarial gains, net of $0.1, $0.1, $0.1 and $0.1 tax, respectively FRANCE Net change in foreign currency translation adjustment UNITED KINGDOM Statutory Accounting Practices [Table] Other comprehensive loss, net of tax us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent Other comprehensive (loss) / income, net of tax Shareholders' equity us-gaap_LossContingencyEstimateOfPossibleLoss Loss Contingency, Estimate of Possible Loss Equity Components [Axis] Equity Component [Domain] Equity [Text Block] AOCI Attributable to Parent [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] us-gaap_CostOfGoodsAndServicesSold Cost of goods sold Other cost of sales Loss Contingency, Nature [Domain] Net drawdowns of borrowings less than three months Property, plant and equipment, net Total property, plant and equipment, net Segment, geographical areas us-gaap_PropertyPlantAndEquipmentGross Property, plant and equipment Pensions and other retirement benefits Pensions and other retirement benefits us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent Gross drawdowns of borrowings greater than three months us-gaap_RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths Gross repayments of borrowings greater than three months Subsequent Event Type [Domain] us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalBeforeIncomeTax Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax Subsequent Event [Table] Subsequent Event Type [Axis] Deferred tax assets us-gaap_ManufacturingCosts Manufacturing fixed costs Other Operating Income and Expense [Text Block] Machinery and Equipment [Member] Share-based compensation us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue Intangible Asset and Goodwill [Text Block] Deferred tax liabilities Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Supplemental cash flow information: Current liabilities us-gaap_LiabilitiesCurrent Total current liabilities Trade receivables us-gaap_AccountsReceivableNetCurrent lxfr_TransactionAgreementBuyerFee Transaction Agreement, Buyer Fee The amount for the buyer fee in the transaction agreement. lxfr_TransactionAgreementBuyerTerminationPayment Transaction Agreement, Buyer Termination Payment The amount for the buyer termination payment under the transaction agreement. Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Customer Relationships [Member] Other Commitments [Table Text Block] Other Commitments [Table] us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment Accumulated depreciation and impairment Transaction Agreement [Member] Represents the transaction agreement. Accumulated other comprehensive loss lxfr_OrdinarySharePayment Ordinary Share Payment (in dollars per share) The amount per ordinary share payable to the shareholders. us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization Accumulated amortization, balance Accumulated amortization, balance Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block] Current maturities of long-term debt and short-term borrowings Total current maturities of long-term debt and short-term borrowings Loss on assets held-for-sale Loss on assets held for sale Loss on held for sale asset group Basis of Accounting [Text Block] us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Income before income taxes Income before tax from continuing operations Additional paid-in capital Debt Disclosure [Text Block] Other costs Other Operating Income (Expense), Net Prepayments and accrued income us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Capital expenditures UNITED STATES Long-term debt, gross Long-Term Debt, Gross us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Current assets us-gaap_DebtWeightedAverageInterestRate Debt, Weighted Average Interest Rate Schedule of Debt [Table Text Block] us-gaap_AssetsCurrent Total current assets Geographic Concentration Risk [Member] us-gaap_GrossProfit Gross profit Goodwill [Table] Debt Instrument, Name [Domain] Defined benefit pension credit Debt instrument, interest rate Depreciation Related and Nonrelated Parties [Axis] us-gaap_TreasuryStockSharesAcquired Share buyback (in shares) Schedule of Long-Term Debt Instruments [Table] Debt Instrument [Axis] us-gaap_TreasuryStockValue Treasury shares Operating activities Raw materials and supplies us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves Investing activities us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash (used) / provided by operating activities Financing activities Work-in-process us-gaap_InventoryWorkInProcessNetOfReserves us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used by investing activities us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided / (used) by financing activities Finished goods us-gaap_InventoryFinishedGoodsNetOfReserves us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent Net defined benefit pension (charge) / credit Defined benefit pension charge Accounts and other receivables, net of allowances of $0.5 and $0.5, respectively Total accounts and other receivables Operating Segments [Member] Accounting Policies [Abstract] Segments [Domain] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Accounts Receivable, Allowance for Credit Loss, Current Segments [Axis] Income Statement [Abstract] Intersegment Eliminations [Member] us-gaap_NumberOfOperatingSegments Number of Operating Segments us-gaap_NumberOfReportableSegments Number of Reportable Segments us-gaap_TreasuryStockCommonShares Balance (in shares) Balance (in shares) us-gaap_OtherSundryLiabilitiesNoncurrent Other non-current liabilities Treasury Stock, Common [Member] Net income Net income Net income Net income Amortization of debt issuance costs Amortization of purchased intangible assets Intangible Asset, Finite-Lived, Amortization Expense Amortization us-gaap_GoodwillForeignCurrencyTranslationGainLoss Exchange difference Income Tax Disclosure [Text Block] us-gaap_AssetImpairmentCharges Asset impairment charges Related and Nonrelated Parties [Domain] us-gaap_DeferredFinanceCostsNet Unamortized debt issuance costs us-gaap_TreasuryStockValueAcquiredCostMethod Share buyback Other receivables us-gaap_OtherReceivablesNetCurrent Supplemental Balance Sheet Disclosures [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Dividends Declared [Table Text Block] us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss Finite-lived intangible assets, exchange movements us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent Accrued liabilities us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent Accounts payable us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation Total assets Statement of Financial Position [Abstract] Dividends Payable, Date to be Paid us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssets Prepayments and accrued income Current assets held-for-sale Current assets Non-current assets Income tax payments, net us-gaap_RepaymentsOfNotesPayable Repayment of loan note Common stock dividends Dividends declared and paid Non-current liabilities Rest of the World [Member] Represents information pertaining to the rest of the World. O 2026 Q1 Dividends [Member] Represents O 2026 Q1 Dividends. O 2026 Q2 Dividends [Member] Represents O 2026 Q2 Dividends. lxfr_DefinedBenefitPlanBuyinCost Defined Benefit Plan, Buy-in Cost Amount of buy-in cost in defined benefit plan. us-gaap_PaymentsForRepurchaseOfCommonStock Repurchase of own shares Document Type All Facilities [Member] Represents all facilities. Weighted average exercise price ($) (in dollars per share) Document Information [Line Items] Document Quarterly Report Dilapidation Obligations [Member] Represents dilapidation obligations. us-gaap_ConcentrationRiskPercentage1 Segment, net sales % Non-cash restructuring charges us-gaap_IncreaseDecreaseInOtherCurrentLiabilities Other current liabilities Accordion [Member] Represents an accordion feature. Document Information [Table] us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment Dilutive effect of potential common stock (in shares) Entity Interactive Data Current Document Transition Report Diluted (in shares) For diluted earnings per share (in shares) us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet Other non-current assets and liabilities Bank Overdrafts [Member] Earnings / (loss) per share Basic (in shares) For basic earnings per share (in shares) us-gaap_NotesAndLoansPayableCurrent Loan notes Basic (in dollars per share) Basic earnings per ordinary share (in dollars per share) Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Indemnification Agreement [Member] Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Intangibles, net lxfr_IncreaseDecreaseInLiabilitiesHeldforsale Current liabilities held-for-sale Increase (decrease) in other current liabilities held-for-sale. us-gaap_FiniteLivedIntangibleAssetsNet Finite-lived intangible assets, net, balance Finite-lived intangible assets, net, balance Document Fiscal Period Focus us-gaap_FiniteLivedIntangibleAssetsGross Finite-lived intangible assets, balance Finite-lived intangible assets, balance Document Fiscal Year Focus Amendment Flag Technology-Based Intangible Assets [Member] Restructuring and Related Activities Disclosure [Text Block] Common Stock [Member] us-gaap_RestructuringReserve Balance Balance Goodwill Goodwill, balance Goodwill, balance us-gaap_RestructuringCharges Restructuring Charges Restructuring charges Total restructuring charges Restructuring charges Document Period End Date Long-Lived Asset, Class [Domain] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) Legal Entity [Axis] Construction in Progress [Member] Entity File Number Entity Tax Identification Number us-gaap_RestructuringReserveCurrent Restructuring provision Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table] Land, Buildings and Improvements [Member] Entity [Domain] Entity Central Index Key Costs incurred Utilization of treasury shares to satisfy share based compensation Utilization value of treasury shares to satisfy share based compensation. Entity Registrant Name Utilization of shares from ESOP to satisfy share based compensation Utilization value of ESOP shares to satisfy share based compensation. Risk-free interest rate (%), maximum Entity Current Reporting Status Expected volatility range (%), maximum Risk-free interest rate (%), minimum Entity Incorporation, State or Country Code Utilization of treasury shares to satisfy share based compensation (in shares) Utilization of treasury shares to satisfy share based compensation. Expected volatility range (%), minimum Current Fiscal Year End Date Utilization of shares from ESOP to satisfy share based compensation (in shares) Utilization of ESOP shares to satisfy share based compensation. Pension and post-retirement actuarial gains, tax us-gaap_ResearchAndDevelopmentExpense Research and development Entity Filer Category Entity Shell Company Entity Emerging Growth Company Entity Small Business us-gaap_OperatingIncomeLoss Operating income Gas Cylinders Segment [Member] Represents information pertaining to the gas cylinders segment. Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Derivative financial instruments us-gaap_DerivativeAssetsCurrent Specialty Industrial [Member] Represents information pertaining to specialty industrial. us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities Other current liabilities Transportation [Member] Represents information pertaining to transportation. Graphic Arts Segment [Member] Represents information pertaining to the graphic arts segment. Elektron Segment [Member] Represents information pertaining to the Elektron segment. us-gaap_SegmentReportingOtherItemAmount Other segment items us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet Accounts and other receivables Defense, First Response, and Healthcare [Member] Represents information pertaining to defense, first response, and healthcare. Entity Address, State or Province Entity Address, City or Town Schedule of Restructuring Reserve by Type of Cost [Table Text Block] us-gaap_InterestExpenseNonoperating Net interest expense Interest expense, net Retained earnings Entity Address, Address Line One City Area Code us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation Share-based compensation cash paid Local Phone Number Revenue from Contract with Customer [Text Block] Entity Address, Postal Zip Code Title of 12(b) Security Security Exchange Name Trading Symbol Class of Stock [Axis] Entity Common Stock, Shares Outstanding Other comprehensive (loss) / income Earnings Per Share [Text Block] Deferred income taxes Weighted average ordinary shares outstanding Taxes on income Common stock, par value (in EUR per share) Basis of Accounting, Policy [Policy Text Block] lxfr_CurrentProvisions Short term provision The amount of current provisions. Shelf Facility, Note Purchase, and Private Shelf Agreement [Member] Represents information pertaining to the Shelf Facility, Note Purchase, and Private Shelf Agreement. Senior Facilities Agreement [Member] Represents information pertaining to the Senior Facilities Agreement. lxfr_FinitelivedIntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationGainLoss Accumulated amortization, exchange movements Accumulated amount of foreign currency translation gain/loss associated with the amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Long-Lived Asset, Class [Axis] us-gaap_Assets Total assets Segment, assets Cash and cash equivalents Geographical [Domain] Superform Aluminum Superplastic Segment [Member] Represents information pertaining to the Superform aluminum superplastic business segment. Geographical [Axis] us-gaap_RestructuringReserveAcceleratedDepreciation Restructuring and Related Cost, Accelerated Depreciation O 2026 Q3 Dividends [Member] Represents ordinary dividends in Q3 of 2026. Superform Segment [Member] Represents the Superform Segment. Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Forfeiture rate (%) The estimated forfeiture rate for share-based compensation arrangements. Diluted (in dollars per share) Diluted earnings per ordinary share (in dollars per share) O 2025 Q1 Dividends [Member] Represents O 2025 Q1 Dividends. O 2025 Q3 Dividends [Member] Represents O 2025 Q3 Dividends. us-gaap_PaymentsForRestructuring Cash payments and other O 2025 Q2 Dividends [Member] Represents O 2025 Q2 Dividends. us-gaap_ContractWithCustomerLiabilityCurrent Advance payments us-gaap_DepreciationDepletionAndAmortization Segment, depreciation and amortization Other Significant Noncash Transactions [Table] Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Committed Banking Facilities [Member] Represents information pertaining to committed banking facilities. lxfr_LineOfCreditFacilityAccordionFeatureUncommittedFacilities Line of Credit Facility, Accordion Feature, Uncommitted Facilities The accordion feature for uncommitted line of credit facilities. Disposal Group Name [Domain] Interest payments us-gaap_InsuranceRecoveries Insurance Recoveries Federal Income Tax Note [Table] Intangible Asset, Finite-Lived [Table Text Block] Intangible Asset, Finite-Lived [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table Text Block] Inventories Total inventories Disposal Group Name [Axis] lxfr_PolicyTable Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] us-gaap_StockholdersEquity Total shareholders' equity Balance Balance Goodwill [Table Text Block] us-gaap_PaymentsOfDividends Dividends paid lxfr_AdjustedEbitda Segment adjusted EBITA The amount of adjusted EBITDA. Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Right-of-use assets from operating leases Other current liabilities Total other current liabilities Other non-current liabilities Total other non-current liabilities Net sales Revenue from Contract with Customer, Excluding Assessed Tax ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Commitments and contingencies (Note 15)