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Significant Investing Activities [Abstract] Significant investing activities: Debt, interest rate Debt Instrument, Interest Rate, Stated Percentage Revenue from Contract with Customer [Abstract] Entity Shell Company Entity Shell Company Number of Bankruptcy Filings Number of bankruptcy filings. 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TWB Company L L C [Member] Twb Company L L C [Member] TWB Marketable securities disclosure text block. Marketable Securities Disclosure [Text Block] Investment in Nikola Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Non-qualified stock option, weighted average grant date fair value, per common share price Increase (Decrease) in Receivables Receivables Increase (Decrease) in Receivables, Total Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature Payments to Acquire Businesses, Gross Cash consideration for acquired entity Total cash paid at closing Total cash paid at closing Halo [Member] Halo Halo. 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Distributions In Excess Of Investment In Unconsolidated Affiliates Distributions in excess of investment in unconsolidated affiliate Other Comprehensive Income (Loss), before Tax Other Comprehensive Income (Loss), before Tax, Total Other comprehensive income (loss), before tax Investment in property, plant and equipment Segment, Expenditure, Addition to Long-Lived Assets Capital expenditures Unsecured Notes 2024. Unsecured Notes Twenty Twenty Four [Member] 2024 Notes Oil and gas equipment contract. 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Significant financing activities: Net earnings Net earnings Discontinued operation net earnings Discontinued Operation Net Earnings Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Other Cash distribution of credit fecility in connection with separation. Cash distribution of credit fecility in connection with separation Cash distribution of credit facility in connection with separation Consolidation Items [Domain] Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Cash flow hedges, tax Separation costs Separation costs Separation costs. Separation costs Engineered cabs. Engineered Cabs [Member] Engineered Cabs Entity Small Business Entity Small Business Hedging Designation [Axis] Hedging Designation Commodity Contract [Member] Commodity Contracts Commodity Contracts Third party customer. Third Party Customer [Member] Third-party Customer Senior unsecured notes, four point three zero percent, due August one twenty thirty two. Senior Unsecured Notes Four Point Three Zero Percent Due August One Twenty Thirty Two [Member] 4.30% Senior Notes due August 1, 2032 Changes in Equity [Line Items] Changes in equity. Share-Based Payment Arrangement [Text Block] Stock-Based Compensation Serviacero Planos, S . A . de C . V [Member] Serviacero Planos S De C V [Member] Serviacero Worthington Equity method investment summarized financial information interest expense (income). Equity Method Investment Summarized Financial Information Interest Expense Income Interest expense (income), net Inventory Valuation Reserves Inventory obsolescence reserve Weighted Average Number of Shares Outstanding, Diluted, Adjustment Effect of dilutive securities Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total Disposal group including discontinued operation income loss from equity method investments. Disposal Group Including Discontinued Operation Income Loss From Equity Method Investments Equity in net income of unconsolidated affiliate Amendment Flag Amendment Flag Direct and incremental costs. 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Net gain (loss) recognized in OCI Other Liabilities [Member] Other Liabilities Statement of Financial Position Location, Balance [Axis] Balance Sheet Location Fair Value Measurements, Nonrecurring [Table Text Block] Assets Measured at Fair Value on Non-Recurring Basis Operating Lease, Right-of-Use Asset Operating lease assets Long-Lived Assets Held and Used [Member] Long Lived Assets Held And Used [Member] Long Lived Assets Held and Used Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest, Total Net loss attributable to noncontrolling interest Inventory Disclosure [Abstract] Disposal Group, Including Discontinued Operation, Revenue Net sales Land Land Other current assets Business Combination, Recognized Asset Acquired, Other Asset, Current Document Type Document Type Significant non-cash operating items. Significant Non-cash Operating Items [Abstract] Significant non-cash operating items: Gross margin Gross profit Gross profit Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Subsidiary, Ownership Percentage, Parent Percent of controlling interest by the Company Percent of ownership interest held in unconsolidated affiliates Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Entity Central Index Key Entity Central Index Key Accounts Receivable, Allowance for Credit Loss, Current Receivables, allowances Allowance for doubtful accounts Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation (Decrease) increase in cash and cash equivalents Subsequent Event Type [Domain] Operating Activities [Axis] Intangible Assets, Net (Including Goodwill) Intangible Assets, Net (Including Goodwill), Total Business combination, total intangible assets Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Shares excluded from computation of diluted earnings per common share Disposal Group Classification [Domain] Impairment of long-lived assets Impairment charge of long-lived assets Impairment of long-lived assets Common Stock, Par or Stated Value Per Share Par value of common stock Unsecured senior notes, four point six zero percent, due August tenth twenty twenty four. 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Percentage Of Outstanding Common Shares To Holders As Of Close Of Business Percentage of outstanding common shares to holders as of close of business Sustainable Energy Solutions Joint Venture Sustainable Energy Solutions Joint Venture [Member] Sustainable Energy Solutions joint venture. Cost of Goods Sold Cost of Sales [Member] Cost of Sales Ownership [Domain] Ownership Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Long-Term Debt Instruments [Table] Ohio OHIO Document Quarterly Report Document Quarterly Report Other Cost and Expense, Operating Miscellaneous income (expense), net Customer Relationships [Member] Customer Relationships Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service Entity Address, State or Province Entity Address, State or Province The amount of operating income (loss) reported by an equity method investment of the entity. 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Due To Related Party Payable Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax [Abstract] Performance Shares [Member] Performance Shares Subsequent Event [Member] Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee 2025 Long-Term Debt, Maturity, Remainder of Fiscal Year Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Reclassification adjustments to net earnings Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Other Assets, Noncurrent Other assets Reconciling items: Segment Reconciliation [Abstract] Reconciling items to adjusted EBITDA Toll. 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Net sales/Cost of goods sold (Member) Net sales/Cost of goods sold Twinsburg Twinsburg Member Twinsburg Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Total acquired identifiable intangible assets Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total Disposal Groups, Including Discontinued Operations [Table Text Block] Summary of Financial Results from Discontinued Operations Selling, General and Administrative Expense Selling, general and administrative expense Selling, General and Administrative Expense, Total SG&A Reclassification out of Accumulated Other Comprehensive Income [Domain] Debt Instrument, Maturity Date Senior notes, maturity date Debt, maturity date Minimum Minimum [Member] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Restricted common shares, fair value per share Granted Financial Instrument [Axis] Financial Instrument Derivative Asset, Subject to Master Netting Arrangement, before Offset Fair Value of Assets Assets, Current [Abstract] Current assets: Dividend from Separation Dividend from separation. Dividend from Worthington Steel at Separation Equity Method Investments [Table Text Block] Financial Information Other Comprehensive Income (Loss), Tax Income tax effect Other Comprehensive Income (Loss), Tax, Total Other comprehensive income (loss), tax Fair Value, Inputs, Level 3 Significant Unobservable Inputs (Level 3) Fair Value, Nonrecurring [Member] Fair Value, Nonrecurring Segment Reporting [Abstract] Business Combination, Recognized Asset Acquired, Asset Total identifiable assets Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis Unrealized Gain (Loss) on Investments Unrealized loss on investment in marketable securities Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Cash Flow Hedges Liabilities, Current [Abstract] Current liabilities: Restructuring and Other Expense, Net Restructuring and Related Activities Disclosure [Text Block] Stock Repurchased and Retired During Period, Value Purchases and retirement of common shares Purchase and retirement of common shares Adjusted EBITDA Adjusted EBITDA. Adjusted EBITDA Accounts Receivable, after Allowance for Credit Loss, Current Accounts Receivable, after Allowance for Credit Loss, Current, Total Receivables, less allowances of $1,062 and $907, respectively Interest Rate Contract [Member] Interest Rate Contracts Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Outstanding, Ending Balance Outstanding, Beginning Balance Accounts Receivable, Credit Loss Expense (Reversal) Bad debt (income) expense Inventory, Work in Process, Net of Reserves Work in process Multi-year Revolving Credit Facility Domestic Line of Credit [Member] Unsecured Revolving Credit Facility Short-term loan facilities Short-Term Debt Short-term borrowings Short-Term Debt, Total Schedule of Goodwill [Table Text Block] Summary of Changes in Carrying Amount of Goodwill Share-based compensation arrangement by share-based payment award, equity instruments other than options, separation related adjustment. Share-based compensation arrangement by share-based payment award, equity instruments other than options, separation related adjustment Separation related adjustment Long-Term Debt, Maturity, Year Two 2027 Continuing Operations [Member] Continuing Operations Interest expense, net Interest Income (Expense), Operating Interest Income (Expense), Net, Total Interest expense (income) Interest expense (income) Payments to Acquire Equity Method Investments Investment in non marketable equity securities Investment in non-marketable equity securities, net of distributions Net earnings (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net earnings Net earnings Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Cash Cash and cash equivalents Foreign Currency Net Investment Hedge Foreign Currency Net Investment Hedge [Member] Foreign currency net investment hedge. Accrued Income Taxes, Current Income taxes payable Earnout agreement. Earnout Agreement [Member] Earnout Agreement Loss Contingencies [Table] Loss Contingencies [Table] Tank replacement costs. Tank Replacement Costs [Member] Tank Replacement Costs Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Basic EPS - weighted average common shares Weighted average common shares outstanding Service-Based Restricted Common Shares [Member] Service Based Restricted Common Shares [Member] Service-Based Restricted Common Shares Propane tanks. Propane Tanks [Member] Propane Tanks Miscellaneous Income Expense [Member] Miscellaneous Income Expense [Member] Miscellaneous Income, Net Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Segments [Axis] Segments Amounts drawn against outstanding letters of credit. Amounts Drawn Against Outstanding Letters Of Credit Drawn amount of letter of credit outstanding Earnings before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Earnings before income taxes Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset Non-derivative Net Investment Hedge Non Derivative Net Investment Hedge Member Non-derivative net investment hedge. Subsequent Events [Text Block] Subsequent Events Other Other Venture [Member] Other venture. Inventory, Raw Materials, Net of Reserves Raw materials Long-term debt Total Long-Term Debt APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total Equity, Attributable to Parent Shareholders' equity - controlling interest Equity Stockholders' Equity Attributable to Parent, Total Stockholders' Equity Attributable to Parent, Beginning Balance Stockholders' Equity Attributable to Parent, Ending Balance Derivatives Not Designated as Hedging Instruments [Table Text Block] Schedule of Gain (Loss) Recognized in Earnings for Economic (Non-Designated) Derivative Financial Instruments Elgen Elgen [Member] Elgen. Steel processing. Steel Processing [Member] Steel Processing Equity Method Investments Investments in unconsolidated affiliates Type of Restructuring [Domain] Interest Rate Contracts Interest Rate Contract One [Member] Interest rate contract one. Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total Worthington samuel coil processing llc. Worthington Samuel Coil Processing Llc [Member] Samuel Samuel Long-Term Debt, Maturity, Year Five 2030 Other. Other [Member] Other Investments in and Advances to Affiliates [Line Items] Investments in and Advances to Affiliates [Line Items] Fair Value Disclosures [Text Block] Fair Value Measurements Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Pension Liability Adjustment Noncontrolling Interest [Member] Noncontrolling Interest Debt Instrument, Name [Domain] Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Worthington Steel Credit Facility. Worthington Steel Credit Facility [Member] Worthington Steel Credit Facility Income (Loss) from Equity Method Investments Equity in net income of unconsolidated affiliates Equity in net income (loss) of unconsolidated affiliates Long-Term Debt, Maturity, Year Four 2029 Inventory, Current [Table] Inventory Current [Table] Derivative Instruments and Hedging Activities Disclosure [Abstract] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Equity method investment, ownership percentage sold. Equity Method Investment, Ownership Percentage Sold Equity method investment ownership percentage sold Segment Reporting, Other Segment Item, Amount Other segment items Sustainable energy solutions. Sustainable Energy Solutions [Member] Sustainable Energy Solutions Interest Expense, Operating and Nonoperating Interest Expense, Total Interest expense, net Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Entity [Domain] Credit Facility [Axis] Credit Facility Noncontrolling equity investment Equity Method Investment, Ownership Percentage Percent of ownership interest held in unconsolidated affiliates Consumer products. Consumer Products [Member] Consumer products Consumer Products Cost of goods sold Cost of Product and Service Sold Cost of Product and Service Sold, Total Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Intrinsic Value Amount Share based compensation arrangement by share based payment award equity instruments other than options grants in period intrinsic value amount. Grant date fair value, amount Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived [Table Text Block] Schedule of Acquisition of Intangible Assets Worthington Steel Worthington Steel [Member] Worthington Steel [Member] Discontinued Operation, Alternative Cash Flow Information [Abstract] Related and Nonrelated Parties [Axis] Related Party Customer List Customer Lists [Member] Foreign Exchange Contract [Member] Foreign Currency Exchange Contracts Foreign Exchange Contracts Entity Address, City or Town Entity Address, City or Town Stock Repurchased During Period, Shares Shares repurchase program (in shares) Number of Reportable Segments Number of reportable segments Security Exchange Name Security Exchange Name Credit Facility [Domain] Credit Facility Europe [Member] Europe Investments in and Advances to Affiliates [Table] Investments In And Advances To Affiliates [Table] Debt Long-Term Debt, Gross Long-term debt at carrying amount Property, Plant and Equipment, Gross Total property, plant and equipment Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Ending Balance Spartan Spartan Steel Coating LLC [Member] Spartan Steel Coating Llc [Member] WH Products. WH Products [Member] WH Products Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Earnings before income taxes Earnings (loss) before income taxes Earnings before income taxes Proceeds from Equity Method Investment, Distribution, Return of Capital Excess distributions from unconsolidated affiliate Excess dividends received from investing activity Jefferson. Jefferson [Member] Jefferson Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Derivative Financials Designated as Cash Flow Hedging Instruments Inventory, Net Total inventories Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Total Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Statistical Measurement [Domain] Statistical Measurement Earnout liability Earnout Liability Earnout liability. Gain Recognized in Earnings Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total Gain (Loss) Recognized in Earnings Level5 Tools, LLC. Level5 Tools, LLC [Member] Level5 Tools, LLC Assets, Current Total current assets Share-Based Payment Arrangement, Expense Stock-based compensation Stock-based compensation expense Increase in purchase consideration Business Combination Increase In Purchase Consideration Business combination increase in purchase consideration. Document Period End Date Document Period End Date Equity Method Investments and Joint Ventures [Abstract] Title and Position [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV 1.56% Series A Senior Note due August 23, 2031 Series A senior unsecured notes one point five six percent due august twenty third twenty thirty one. Series A Senior Unsecured Notes One Point Five Six Percent Due August Twenty Third Twenty Thirty One [Member] Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Useful Life (Years) Statement of Financial Position [Abstract] Loss Contingency Nature [Axis] Loss Contingency Nature Technological Know-How Technological Know How. Technological Know How [Member] Building products facility. Building Products Facility [Member] Building Products Facility Loss Contingency, Nature [Domain] Loss Contingency, Nature The estimated tax effect of the value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. Derivative Instruments Gain Loss Reclassification From Accumulated O C I To Income Estimated Net Amount To Be Transferred Tax Loss in accumulated other comprehensive income expected to be reclassified into net earnings, tax Losses in accumulated other comprehensive income expected to be reclassified into net earnings, tax Losses in accumulated other comprehensive income expected to be reclassified into net earnings, tax Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income Arti Flex [Member] Arti Flex [Member] ArtiFlex Total assets of continuing operations Assets From Continuing Operations Assets from continuing operations. Tempel China Tempel China. Not Designated as Hedging Instrument [Member] Derivatives Not Designated As Hedging Instruments Hydrostat Hydrostat [Member] Hydrostat Liabilities Total liabilities Long-term steel supply agreement. Long-term Steel Supply Agreement [Member] Long-term Steel Supply Agreement Financial Instruments [Domain] Financial Instruments Disposal Groups, Including Discontinued Operations [Table] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name Dividends Payable, Current Dividends payable Line of Credit Facility, Maximum Amount Outstanding During Period Drawn amount of letter of credit outstanding Weighted Average Number of Shares Outstanding, Diluted Weighted average common shares outstanding Diluted EPS - weighted average common shares Securities Act File Number Entity File Number Payments of Ordinary Dividends, Common Stock Dividends paid Cover [Abstract] Halo products group, llc. Halo Products Group, LLC [Member] HPG Fixed Assets Fixed Asset [Member] Fixed asset. Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited Property Lease Guarantee [Member] Operating Lease of Aircraft Number of Operating Segments Number of operating segments Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service Segment Operations Segment Reporting Disclosure [Text Block] Machinery and Equipment, Gross Machinery and equipment Restructuring and other expense (income), net Amount of net expenses (income) associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Restructuring and other expense, net Restructuring and other expense (income), net Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Unallocated Corporate Unallocated Corp Standby Letters of Credit [Member] Stand-by Letters of Credit Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] Summary of Performance Activity Subsequent Event [Table] Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Pro forma net earnings Disposal Group, Including Discontinued Operation, Other Income Miscellaneous income, net Accounts payable Business Combination, Recognized Liability Assumed, Accounts Payable, Current Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net, Ending Balance Finite-Lived Intangible Assets, Net, Beginning Balance Finite-Lived Intangible Assets, Net, Total Customer relationships Equity Method Investment, Realized Gain (Loss) on Disposal Pre-tax loss on sale of equity Loss on sale of equity investments Exercise price Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price, Ending Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price, Beginning Balance Restructuring Charges, Total Restructuring Charges Expense New Accounting Pronouncements, Policy [Policy Text Block] Recently Adopted Accounting Standards Summary of Service-Based Restricted Common Shares Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Gain (Loss) on Disposition of Assets Gain (Loss) on Disposition of Assets, Total Net loss (gain) on sale of assets Common share awards vesting, minimum consecutive days at stated price Common Share Awards Vesting Minimum Consecutive Period At Stated Price Common share awards vesting minimum consecutive period at stated price. Comprehensive Income (Loss) [Table Text Block] Summary of Tax Effects on Each Component of OCI Ownership [Axis] Ownership Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Pre-tax stock-based compensation, period of recognition Employee Severance [Member] Early Retirement And Severance Comprehensive Income (Loss) Note [Text Block] Other Comprehensive Income (Loss) Investment In Note Receivable Investment in Note Receivable [Member] Investment in note receivable. Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Pre-tax stock-based compensation Pension liability adjustment Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Pension liability adjustment, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax, Total Operating Lease, Liability, Current Current operating lease liabilities Revenue, Remaining Performance Obligation, Amount Amount of performance obligation related to contracts with expected duration greater than one year Document Transition Report Document Transition Report Two thousand twenty six notes. Two Thousand Twenty Six Notes [Member] 2026 Notes Impairment charges Asset Impairment Charges Impairment of long-lived assets Asset Impairment Charges, Total Cost of Revenue Cost of goods sold Incremental cost of goods sold Cost of Revenue, Total LSI. LSI [Member] LSI Payments for Repurchase of Common Stock Repurchase of common shares Cleveland Member Cleveland [Member] Cleveland Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Statement of Cash Flows [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted Average Grant Date Fair Value Stock Issued During Period, Value, New Issues Common shares issued, net of withholding tax Common shares issued, net of withholding tax Share-Based Payment Arrangement, Option, Activity [Table Text Block] Summary of Stock Option Activity Operating Activities [Domain] Potential earn out payment Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount Former CEO [Member] Former CEO. Former CEO Payments to Acquire Businesses, Net of Cash Acquired Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired, Total Payments to acquire businesses, cash outflow Purchase price, net of cash acquired Equity [Text Block] Changes in Equity Earnings Per Share [Text Block] Earnings per Share Discontinued Operations and Disposal Groups [Abstract] Net earnings attributable to controlling interest Net earnings attributable to controlling interest Increase (Decrease) in Inventories Inventories Increase (Decrease) in Inventories, Total Inventory [Line Items] Inventory [Line Items] The amount of income tax expense reported by an equity method investment of the entity. Equity Method Investment Summarized Financial Information Income Tax Expense Benefit Income tax expense Income tax expense (benefit) Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Net loss attributable to noncontrolling interest Receivables [Member] Receivables [Member] Receivables Income Taxes Receivable, Current Income taxes receivable Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Dividend yield The separation of the steel processing business. The Separation of the Steel Processing Business Other intangible assets, net of accumulated amortization of $116,912 and $112,202 at August 31, 2023 and May 31, 2023, respectively Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill), Total Other intangible assets, net of accumulated amortization of $101,791 and $88,887, respectively Payments of Ordinary Dividends, Noncontrolling Interest Payments to noncontrolling interests Assets [Abstract] Assets Schedule Of Equity Income From Unconsolidated Joint Ventures Included In Measurement Of Segment Profit. Schedule Of Equity Income From Unconsolidated Joint Ventures Included In Measurement Of Segment Profit [Table Text Block] Schedule of Equity Income from Unconsolidated Joint Ventures Included in the Measurement of Segment Profit Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate Restructuring and Related Activities [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Summary of Changes in AOCI Other Assets [Member] Other Assets Early termination, other similar fees and penalties paid Early termination, other similar fees and penalties paid Early termination, other similar fees and penalties paid Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Investing activities: Accounts payable Accounts Payable, Current Accounts Payable, Current, Total Interest Expense, Nonoperating Interest Expense, Nonoperating, Total Interest expense, net Other Operating Segment [Member] Unallocated Corporate and Other Derivative, Contract End Date Maturity Date(s) Transaction Type [Axis] Restructuring Cost and Reserve [Line Items] Revision of Prior Period [Domain] Changes in Equity [Table] Changes in equity. Equity Method Investment, Nonconsolidated Investee, Other [Member] Equity Method Investment, Nonconsolidated Investee, Other Increase in fair value earnout liability Increase in Fair Value Earnout Liability Increase in fair value earnout liability. Fair Value Disclosures [Abstract] Commitments and Contingencies Disclosure [Abstract] Stock Issued During Period, Value, Acquisitions Acquisition of Halo Derivative [Member] Derivative Financial Instruments Interest expense, net Disposal Group, Including Discontinued Operation, Interest Expense Interest expense, net Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Net identifiable assets Long-Term Line of Credit Borrowings outstanding Long-Term Line of Credit, Total Contract with Customer, Asset, after Allowance for Credit Loss, Current Contract assets Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total Business Combination, Pro Forma Information [Table Text Block] Schedule of Unaudited Pro Forma Information Ragasco Ragasco [Member] Ragasco. Ragasco earnout liability Debt and Receivables Securitization [Table] Debt And Receivables Securitization [Table] Debt And Receivables Securitization [Table] Debt Instrument [Axis] Derivative Instrument [Axis] Derivative Instrument Two Thousand Twenty Four Notes. Two Thousand Twenty Four Notes [Member] 2024 Notes Number of Joint Ventures Number Of Joint Ventures Number of joint ventures Share-Based Payment Arrangement [Abstract] Assets, Fair Value Disclosure Fair market value of assets Assets Assets, Fair Value Disclosure, Total Deferred income taxes Business Combination, Recognized Liability Assumed, Deferred Tax Liability Debt Instrument, Fair Value Disclosure Long-term debt at fair value including current maturities Debt Instrument, Fair Value Disclosure, Total Unbilled receivables and contract assets. Unbilled Receivables And Contract Assets [Line Items] Unbilled Receivables And Contract Assets [Line Items] Equity Method Investments and Joint Ventures Disclosure [Text Block] Investments in Unconsolidated Affiliates Revenues Net sales Revenues, Total Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash used by investing activities Title of 12(b) Security Title of 12(b) Security Schedule of Segment Reporting Information, by Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Financial Instruments and Hedging Activities Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited Product design/Know-how. Product design/Know-how [Member] Product Design/Know-How Separation of worthington steel. Separation of Worthington Steel Separation of Worthington Steel Related and Nonrelated Parties [Domain] Related Party Thereafter Long-Term Debt, Maturity, after Year Five Income Tax Disclosure [Text Block] Income Taxes Short-term loan maturity year Short-term loan maturity year Interest Expense [Member] Interest Expense Accounts Payable [Member] Accounts Payable Other Liabilities, Noncurrent Other liabilities Other non-current liabilities Consolidated Entities [Axis] Consolidated Entities Legal Entity [Axis] Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in assets and liabilities, net of impact of acquisitions: Letters of Credit Outstanding, Amount Letter of credit amount outstanding Business combination recognized identifiable assets acquired and liabilities assumed operating lease assets. Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Operating Lease Assets Operating lease assets Income Tax Disclosure [Abstract] Thereafter Long Term Debt Maturities Repayments Of Principal After Year Four Long ​term​ debt ​maturities ​repayments​ of principal​ after​ year​ four. Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Business Combination [Text Block] Acquisitions Additional Paid-in Capital [Member] Additional Paid-in Capital Measurement Frequency [Domain] Measurement Frequency Statement of Income Location, Balance [Axis] Income Statement Location Trading Symbol Trading Symbol Subsequent Event Type [Axis] Measurement Period Adjustments Line of Credit Facility, Description Line of credit facility, description Employee-related Liabilities, Current Accrued compensation, contributions to employee benefit plans and related taxes Employee-related Liabilities, Current, Total Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Financing activities: Purchases Related Party Transaction, Purchases from Related Party Payments to Worthington Steel Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Expected term (years) Fair Value, Recurring [Member] Fair Value, Measurements, Recurring Net earnings attributable to controlling interest Discontinued operation net income loss Discontinued Operation Net Income Loss Net earnings attributable to controlling interest Debt and receivables securitization. Debt And Receivables Securitization [Line Items] Debt And Receivables Securitization [Line Items] Other Restructuring [Member] Other Restructuring Charges Equity Components [Axis] Equity Components Equity Component [Domain] Equity Component Asset Class Asset Class [Axis] Worthington Specialty Processing [Member] Worthington Specialty Processing [Member] Worthington Specialty Processing Goodwill and Intangible Assets Disclosure [Abstract] Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Reconciliation of Segment Adjusted EBITDA from Continuing Operations to Earnings from Income Taxes from Continuing Operations Business Combination [Axis] Business Acquisition Components of other comprehensive income (loss). Components Of Other Comprehensive Income Loss [Abstract] Customer [Axis] Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Pre-tax stock-based compensation, period of recognition Investments in unconsolidated affiliate. Investments In Unconsolidated Affiliate [Member] Investments In Unconsolidated Affiliate Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction, Total Statement of Comprehensive Income [Abstract] Corporate Joint Venture [Member] Joint Venture Transactions Disposal group including discontinued operation impairment of long-lived assets. Disposal Group Including Discontinued Operation Impairment of Long Lived Assets Impairment of long-lived assets Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee Maximum [Member] Maximum Liabilities, Fair Value Disclosure Liabilities Liabilities, Fair Value Disclosure, Total Designated as Hedging Instrument [Member] Derivatives Designated As Hedging Instruments Statistical Measurement [Axis] Statistical Measurement Finite-Lived Intangible Assets, Accumulated Amortization Other intangible assets, accumulated amortization Number of operating joint ventures Number of Operating Joint Ventures Number of operating joint ventures. Property, Plant and Equipment [Member] Real Property Non-derivative Designated As Hedging Instrument Non Derivative Designated As Hedging Instrument [Member] Non-derivative designated as hedging instrument. Balloon Time Mini Helium Tanks. Balloon Time Mini Helium Tanks [Member] Balloon Time Mini Helium Tanks Line of Credit Facility, Expiration Date Maturity date Cost Method Investment Name Fair Value Disclosure Axis. Cost Method Investment Name Fair Value Disclosure [Axis] Cost Method Investment Name Fair Value Disclosure Long-lived assets held for sale. Long Lived Assets Held For Sale [Member] Long Lived Assets Held for Sale Long Lived Assets Held and Used for Sale Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Total equity Stock Issued During Period, Value, Employee Benefit Plan Common shares in non-qualified plans Depreciation and amortization Depreciation And Amortization From Continuing Operations Depreciation and amortization from continuing operations. Depreciation and amortization Direct and incremental costs attributed to discontinued operations. Direct And Incremental Costs Attributed To Discontinued Operations Direct and incremental costs attributed to discontinued operations Foreign Exchange Contract One Member Foreign exchange contract. Foreign Exchange Contracts Other Nonoperating Income (Expense) [Abstract] Other income (expense): Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total Comprehensive loss attributable to noncontrolling interests Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class Voestalpine. Voestalpine [Member] Voestalpine Revenue from Contract with Customer [Text Block] Revenue Recognition Proceeds from issuance of common shares, net of tax withholdings Proceeds From Issuance Of Common Stock Net Of Tax Withholdings Proceeds from issuance of common stock net of tax withholdings. Business Combination [Table] Schedule Of Business Acquisitions By Acquisition [Table] Entity Registrant Name Entity Registrant Name Debt Debt Disclosure [Text Block] Accrued expenses Business combination, recognized identifiable assets acquired and liabilities assumed, accrued expenses. Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Expenses Accrued expenses Other Nonoperating Income (Expense) Other Nonoperating Income (Expense), Total Miscellaneous income (expense), net Miscellaneous income (expense), net Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income Loss [Table] Subsequent Events [Abstract] Consolidated Entities [Domain] Consolidated Entities Income Tax Expense (Benefit) Income tax expense Income tax expense Income tax expense (benefit) Measurement Frequency [Axis] Measurement Frequency Stock Repurchased During Period, Value Repurchase of shares Business Combination, Contingent Consideration, Type [Axis] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Subsidiary, Ownership Percentage, Noncontrolling Owner Percent of noncontrolling interest Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Liability Class [Axis] Liability Class Disposal Group Classification [Axis] Building products. Building Products [Member] Building Products Consolidation Items [Axis] Payments for Restructuring Payments Payments Payments to Acquire Property, Plant, and Equipment Investment in property, plant and equipment Payments to Acquire Property, Plant, and Equipment, Total Gain (Loss) on Investments, Total Gain (Loss) on Investments Gain (Loss) on investments Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Restricted common shares, granted Assets Total assets Total assets Income Statement [Abstract] Restructuring Cost [Table] Oil & gas equipment. Oil And Gas Equipment [Member] Oil & gas equipment Cost Method Investment Name Fair Value Disclosure Domain. Cost Method Investment Name Fair Value Disclosure [Domain] Cost Method Investment Name Fair Value Disclosure Selling, General and Administrative Expenses [Member] Selling, General and Administrative Expense Common share awards vesting, minimum price per share Common Share Awards Vesting Minimum Price Per Share Common share awards vesting, minimum price per share. Equity Method Investment, Amount Sold, Total Equity Method Investment, Amount Sold Equity method investment sold amount after adjustments for closing debt and final net working capital Estimate of fair value less costs to sell Property, Plant, and Equipment, Salvage Value Estimated salvage value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Vested Special Performance Stock Awards [Member] Special Performance Stock Awards [Member] Special PSAs Earnings Per Share, Diluted [Abstract] Diluted Business Combination [Abstract] Earnings per common share attributable to controlling interest Earnings Per Share, Diluted Consolidated Diluted EPS Schedule of Segment Reporting Information, by Segment [Table Text Block] Financial Information for Reportable Operating Segments Operating Segments [Member] Total Reportable Operating Segments Current assets of discontinued operations. Current Assets of Discontinued Operations [Member] Current Assets of Discontinued Operations Alternative fuel cylinders manufacturing line facility member. Alternative Fuel Cylinders Manufacturing Line Facility [Member] Alternative Fuel Cylinders Manufacturing Line Facility Title and Position [Domain] Unsecured Notes 2026. Unsecured Notes Twenty Twenty Six [Member] 2026 Notes Asset Acquisition [Axis] City Area Code City Area Code Business Combination, Pro Forma Information, Pro Forma Revenue Pro forma net sales Other Comprehensive Income (Loss), Net of Tax Other comprehensive (loss) income Other comprehensive income Other comprehensive income (loss), net of tax Stock-based compensation Allocated Share Based Compensation Expense From Continuing Operations Allocated share based compensation expense from continuing operations. Stock-based compensation Discontinued Operation, Tax Effect of Discontinued Operation Income tax expense Principal amount Debt Instrument, Face Amount Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net earnings from discontinued operations Net earnings attributable to noncontrolling interest Buildings and Improvements, Gross Buildings and improvements Related Party Transaction Accounts Payable Related To Purchases From Related Party Related party transaction accounts payable related to purchases from related party. Accounts payable related to purchases from related party Line of Credit Facility, Maximum Borrowing Capacity Maximum borrowing capacity Business Combination [Line Items] Business Acquisition [Line Items] Share-based compensation arrangement by share-based payment award, equity instruments other than options, converted to common shares, weighted average grant date fair value. Share-based compensation arrangement by share-based payment award, equity instruments other than options, converted to common shares, weighted average grant date fair value Converted to Worthington Steel common shares Non cash charges in miscellaneous income Non-cash charges in miscellaneous income. Non-cash charges in miscellaneous income Business combination related to customer overpayment held back at closing amount. Business combination related to customer overpayment held back at closing amount Customer overpayment held back at closing Dividends, Cash, Total Dividends, Cash Cash dividends declared Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Derivative Liability, Subject to Master Netting Arrangement, before Offset Fair Value of Liabilities Proceeds from Equity Method Investment, Distribution Distributions from unconsolidated affiliates Property, Plant and Equipment, Net Total property, plant and equipment, net BRAZIL Brazil Current operating lease liability Business combination recognized identifiable assets acquired and liabilities assumed current operating lease liabilities. Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Operating Lease Liabilities Operating Income (Loss) Operating income Operating income Series B senior unsecured notes one point nine zero percent due august twenty third twenty thirty four. Series B Senior Unsecured Notes One Point Nine Zero Percent Due August Twenty Third Twenty Thirty Four [Member] 1.90% Series B Senior Notes due August 23, 2034 Gains in accumulated other comprehensive income expected to be reclassified into net earnings Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred Losses in accumulated other comprehensive income expected to be reclassified into net earnings Retained Earnings [Member] Retained Earnings Business Combination, Contingent Consideration, Type [Domain] Transaction [Domain] Foreign currency translation, tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Foreign currency translation, tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Total Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] Capital Project Capital Project. Capital Project [Member] Guarantor Obligation [Table] Schedule Of Guarantee Obligations [Table] Share Repurchase Program, Authorized, Number of Shares Common Stock shares authorized for repurchase Noncurrent operating lease liabilities Operating Lease, Liability, Noncurrent Noncurrent operating lease liabilities Fair Value, Inputs, Level 1 [Member] Quoted Prices In Active Markets (Level 1) Fair Value, Inputs, Level 1 Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash used by financing activities Impaired Long-Lived Assets Held and Used [Line Items] Long-Term Debt [Member] Long-term Debt Deferred Income Tax Liabilities, Net Deferred income taxes, net Derivative Contract [Domain] Derivative Contract Business Combination, Recognized Asset Acquired, Receivable, Current Accounts receivable Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Entity Interactive Data Current Entity Interactive Data Current Statement of Income Location, Balance [Domain] Income Statement Location Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Foreign currency translation, before tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Total Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Operating activities: Transferred over Time [Member] Over time revenue Proceeds From Sale Of Productive Assets Net Proceeds from sale of assets, net of selling costs Proceeds from sale of productive assets, net. Disposal Group, Including Discontinued Operation, General and Administrative Expense Selling, general and administrative expense Disposal Group, Including Discontinued Operation, Gross Profit (Loss) Gross profit Gross profit Unbilled Receivables, Current Unbilled receivables Business Combination, Pro Forma Information [Abstract] Common Stock, Dividends, Per Share, Declared Cash dividends declared per common share Line of Credit Facility, Current Borrowing Capacity Line of credit facility, available amount Entity Tax Identification Number Entity Tax Identification Number Debt maturity period Debt Instrument, Term Amortization Of Inventory Step Up Amortization Of Inventory Step Up. Amortization of inventory step-up Construction in Progress, Gross Construction in progress Equity method investment loss on settlement of final transaction costs related to sale Loss on settlement of final transaction costs related to sale Equity method investment loss on settlement of final transaction costs related to sale. Local Phone Number Local Phone Number Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income Loss [Line Items] Production equipment Production Equipment Member Production Equipment Denominator (shares in thousands): Weighted Average Number of Shares Outstanding, Diluted [Abstract] Non compete. Non Compete [Member] Non-Compete Agreement Long-Lived Assets Carrying value of long-lived assets Series A senior unsecured notes two point zero six percent due august twenty third twenty thirty one. Series A Senior Unsecured Notes Two Point Zero Six Percent Due August Twenty Third Twenty Thirty One [Member] 2.06% Series A Senior Note due August 23, 2031 Accounting Policies [Abstract] Deferred Income Tax Expense Benefit Continuing And Discontinuing Operation Deferred income tax expense benefit continuing and discontinuing operation. Provision for (benefit from) deferred income taxes Preliminary Valuation Previously Reported [Member] Disaggregation of Revenue [Line Items] Disaggregation Of Revenue [Line Items] Revenue from Contract with Customer, Excluding Assessed Tax Net sales Net Income (Loss) Attributable to Parent [Abstract] Numerator (basic and diluted) Guarantor Obligations, Maximum Exposure, Undiscounted Maximum potential obligation AR Facility Accounts Receivable Securitization Facility [Member] Accounts receivable securitization facility. Inventory, Net [Abstract] Inventories: Debt Instrument, Repurchased Face Amount Debt instrument, repurchased face amount The entity's estimated annual effective income tax rate. Estimated Annual Effective Tax Rate For Continuing Operations Estimated annual effective income tax rate Unsecured senior notes, four point five five percent, due April fifteen twenty twenty six. Unsecured Senior Notes Four Point Five Five Percent Due April Fifteen Twenty Twenty Six [Member] 4.55% Senior Notes due April 15, 2026 Miscellaneous Income Net Miscellaneous income, net. Miscellaneous Income Net [Member] Entity Emerging Growth Company Entity Emerging Growth Company Indefinite-Lived Intangible Assets [Axis] Indefinite-lived Intangible Assets Disposal Group, Including Discontinued Operation, Operating Income (Loss) Operating income Operating income