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Represents asset securities seeking returns. 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Individuals [Member] Dividends paid Payments of Dividends Balance at Beginning of Period Balance at End  of Period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Stock option weighted average remaining life Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Statement Statement [Line Items] Total assets Consolidated total assets Assets Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Summary of Components of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Fair value of plan assets at beginning of year Fair value of plan assets at end of year Fair value of plan assets at end of year Defined Benefit Plan, Plan Assets, Amount Accounting Standards Update and Change in Accounting Principle [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Operating Operating Segments [Member] Weighted average grant date fair 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Amount Other Than LIFO Inventory Amount Credit agreement borrowings Proceeds from Long-Term Lines of Credit Operating lease assets: Operating Lease, Assets, Lessee [Abstract] Operating Lease, Assets, Lessee [Abstract] Purchase agreements Long-Term Purchase Commitment [Line Items] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Net sales Consolidated net sales Revenue from Contract with Customer, Excluding Assessed Tax Credit Agreement available for future borrowings Line of Credit Facility, Remaining Borrowing Capacity Aggregate principal amount Repayments of Other Long-Term Debt Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Subsegments [Domain] Subsegments [Domain] Summary of the Gains (Losses) Related to Cash Flow Hedges Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Construction in progress Construction in Progress [Member] Raw materials and 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Service cost Defined Benefit Plan, Service Cost Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Awards issued under share-based compensation plans that were excluded from calculations of diluted earnings per share because their effects were anti-dilutive Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock, issued shares (in shares) Common Stock, Shares, Issued Number of former operating facility site that the liability for future costs is discounted to present value (facility) Number Of Former Operating Facility Site Liability For Future Costs Is Discounted To Present Value Represents the number of former operating facility site that the liability for future costs is discounted to present value. Other changes in plan assets and benefit obligations recognized in other comprehensive income consist of: Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Aggregate purchase commitments, due in 2028 Purchase Obligation, to be Paid, Year Two Reclassifications from Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] California CALIFORNIA Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Deferred tax valuation allowance SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] Deferred income taxes Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Environmental Expenditures Asset Retirement Obligation and Environmental Cost [Policy Text Block] Contributions to defined contribution retirement and savings plans Defined Contribution Plan, Cost Amount reclassified from AOCI Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Income tax provision at the federal statutory rate Statutory federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Pension and postretirement benefits, net of tax of $(15.0), $(5.3) and $(16.0), respectively Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Expiration term Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Accrued liabilities Total accrued liabilities Accrued Liabilities, Current Entity Public Float Entity Public Float Summary of Amounts Recognized in the Accumulated Other Comprehensive Loss Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Schedule of Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Remaining amount authorized Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Dividend equivalents (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Dividend Equivalents, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Dividend Equivalents, Weighted Average Grant Date Fair Value Plan settlements Defined Benefit Plan, Plan Assets, Payment for Settlement Pensions Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Senior unsecured notes, 6.375% due July 2028 (face value of $400.0 million at June 30, 2025) Senior Unsecured Notes 6.375 Percent Due July 2028 [Member] Senior Unsecured Notes 6.375 Percent Due July 2028 Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Non-equity compensation Deferred Tax Assets, Non Equity Compensation Deferred Tax Assets, Non Equity Compensation Percentage of Director's annual retainer paid in stock instead of cash Share Based Compensation Arrangement by Share Based Payment Award, Percentage of Retainer Converted to Shares Represents the percentage of the Director's annual retainer which can be paid in stock instead of cash. Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Shares vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Letter of credit fees Letter of Credit Fees Percentage The fees, expressed as a percentage of the amount outstanding on letters of credit issued. Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term Award Type [Domain] Award Type [Domain] Non-taxable or non-deductible items: Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent [Abstract] Additional information: Defined Benefit Plan, Additional Information [Abstract] Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Expected term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Estimated annual amortization expense for 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Purchases of treasury stock (in shares) Repurchase of common stock (in shares) Treasury Stock, Shares, Acquired Geographical [Axis] Geographical [Axis] Accrued liabilities Increase (Decrease) in Accrued Liabilities Pension earnings, interest and deferrals Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Net Asset Value Fair Value Measured at Net Asset Value Per Share [Member] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Axis] Non-deductible compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Compensation, Percent Effective Income Tax Rate Reconciliation, Nondeductible Expense, Compensation, Percent Research and development tax credit Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] $100.01 - $150.00 Exercise Price Range Three [Member] Represents the third range of exercise price. Deductions SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Weighted Average Exercise Price (in dollars per share) Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Purchases of treasury stock Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash collateral held by counterparties Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Summary of Amounts Reclassified from AOCI Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Non-NEOs Non-NEOs [Member] Reporting Unit [Domain] Reporting Unit [Domain] 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year One Estimated annual amortization expense for 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Summary of Inventories Schedule of Inventory, Current [Table Text Block] Leases Lessee, Operating Leases [Text Block] Aggregate maturities of long-term debt, 2027 Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Contract liabilities Contract liabilities Contract with Customer, Liability, Current Purchases of treasury stock Payments for Repurchase of Common Stock Reporting unit, long term growth rate reduction necessary to approximate net Book value Reporting Unit, Long Term Growth Rate Reduction Necessary To Approximate Net Book Value Reporting Unit, Long Term Growth Rate Reduction Necessary To Approximate Net Book Value Percentage of goodwill Percentage Of Goodwill Percentage Of Goodwill Statistical Measurement [Axis] Statistical Measurement [Axis] Accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Amount of Gain (Loss) Recognized in AOCI on Derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Reinvested earnings Retained Earnings (Accumulated Deficit) Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Net gain on derivative instruments, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Number of reporting units Goodwill, Reporting Unit, Number Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Pension Benefits Pension Plan [Member] Common Stock Common Stock [Member] Amounts recognized in the consolidated balance sheets: Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Non-deductible expenses Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Operating lease cost Operating Lease, Cost Dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Target shares awarded percentage Share Based Compensation Arrangement by Share Based Payment Award, Percentage of Target Shares Represents the number of shares that may be awarded under a plan, expressed as a percentage of the target award. Derivative Contract [Domain] Derivative Contract [Domain] Accounts Receivable Receivable [Policy Text Block] Total liabilities and stockholders' equity Liabilities and Equity Variable lease cost Variable Lease, Cost Debt prepayment costs Gain (Loss) on Extinguishment of Debt, before Debt Issuance Cost Writeoff Employee Stock Option Share-Based Payment Arrangement, Option [Member] Non-deductible goodwill impairment Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Deferred tax assets, operating loss carryforwards, subject to expiration Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration Summary of Weighted-Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost Defined Benefit Plan, Assumptions [Table Text Block] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring charges excluding noncash impairments Restructuring Charges Domestic and international equities Equity securities Defined Benefit Plan, Equity Securities [Member] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Estimated annual amortization expense for 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Postretirement provisions Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Property, Plant and Equipment Property, Plant and Equipment [Member] Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] Summary of Weighted-Average Asset Allocations by Asset Category Schedule of Allocation of Plan Assets [Table Text Block] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest payments, net Interest Paid, Excluding Capitalized Interest, Operating Activity Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Purchases of property, plant, equipment and software Payments to Acquire Productive Assets Hedging Designation [Axis] Hedging Designation [Axis] Dividends allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Summary of ROU Assets and Liabilities Assets And Liabilities Lessee [Table Text Block] Assets And Liabilities Lessee [Table Text Block] Credit Facility [Axis] Credit Facility [Axis] Restructuring and Asset Impairment Charges Restructuring and Related Activities Disclosure [Text Block] SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Name Measure Name Adjustments of prior years' income taxes Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent Omnibus Plan Omnibus Plan [Member] Omnibus Plan [Member] Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Long-term debt outstanding Debt Instrument [Line Items] Other current assets Increase (Decrease) in Other Current Assets Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Capital in Excess of Par Value Additional Paid-in Capital [Member] Goodwill impairment charge Goodwill impairment charge Goodwill, Impairment Loss Name Trading Arrangement, Individual Name Projected benefit obligation Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Cash and cash equivalents Cash and Cash Equivalent Derivative contracts liability on a gross basis Derivative Contracts Liability Value if Presented on Gross Basis Derivative Contracts Liability Value if Presented on Gross Basis $250.01 - $300.00 Exercise Price Range Six [Member] Exercise Price Range Six Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Consolidated depreciation and amortization Depreciation, Depletion and Amortization Goodwill, measurement input Goodwill, Measurement Input Goodwill, Measurement Input Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Plan's current allocation policy Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Summary of Other (Income) Expense, Net Interest and Other Income [Table Text Block] Share-based compensation plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Unrealized gains on company-owned life insurance contracts and investments held in rabbi trusts Life Insurance, Corporate or Bank Owned, Change in Value Aggregate maturities of long-term debt, 2031 Long-Term Debt, Maturity, Year Five Weighted-average remaining lease term - operating leases Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Foreign exchange losses Gain (Loss), Foreign Currency Transaction, before Tax Other (Income) Expense, Net Other Income and Other Expense Disclosure [Text Block] Cost of sales Cost of Product and Service Sold Valuation accounts activity SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Aggregate purchase commitments Purchase Obligation Award Timing Method Award Timing Method [Text Block] INCREASE IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Gross deferred tax assets Deferred Tax Assets, Gross Amortization of net loss (gain) Defined Benefit Plan, Amortization of Gain (Loss) Net income Net income Net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Dynamet Dynamet [Member] Dynamet Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] 2030 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Restatement Determination Date: Restatement Determination Date [Axis] Earnings available for common stockholders used in calculation of diluted earnings per common share Undistributed Earnings, Diluted Summary of Changes in AOCI by Component, Net of Tax Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Inventories Deferred Tax Liabilities, Inventory Actuarial (gain) loss Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Leases Lessee, Leases [Policy Text Block] Exercise price range disclosures Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] Summary of Director Stock Units Activity Share-Based Payment Arrangement, Nonemployee Director Award Plan, Activity [Table Text Block] Share-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] $18.26 - $50.00 Exercise Price Range One [Member] Exercise Price Range One WEIGHTED AVERAGE COMMON SHARES OUTSTANDING: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Statistical Measurement [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Number of Awards Number of Units Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Summary of Accumulated Benefit Obligations in Excess of Plan Assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] Common stock — authorized 100,000,000 shares; issued 57,359,343 shares at June 30, 2026, and 57,230,002 shares at June 30, 2025; outstanding 49,606,583 shares at June 30, 2026, and 49,707,379 shares at June 30, 2025 Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Withholding tax payments on share-based compensation awards Payment, Tax Withholding, Share-Based Payment Arrangement Summary of Long-Term Debt Outstanding Schedule of Long-Term Debt Instruments [Table Text Block] Line of Credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Tax Jurisdiction of Domicile [Extensible Enumeration] Tax Jurisdiction of Domicile [Extensible Enumeration] Defined Contribution Retirement and Savings Plans Other Pension, Postretirement and Supplemental Plans [Member] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Inventory impairments Inventory Write-down Summary of Reconciliation of Income Taxes Computed at the U.S. Federal Income Tax Rate to the Company's Effective Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Current liabilities: Liabilities, Current [Abstract] Restructuring and asset impairment charges Restructuring Costs and Asset Impairment Charges Interest on prior tax positions Effective Income Tax Rate Reconciliation, Interest On Prior Tax Positions, Percent Effective Income Tax Rate Reconciliation, Interest On Prior Tax Positions, Percent Other Other Country [Member] Represents information pertaining to other countries not separately disclosed in the taxonomy. Income Tax Paid, by Individual Jurisdiction [Line Items] Income Tax Paid, by Individual Jurisdiction [Line Items] Total, before tax effect Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] 2029 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province Foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent PEO Total Compensation Amount PEO Total Compensation Amount Tax credits: Effective Income Tax Rate Reconciliation, Tax Credit, Amount [Abstract] Foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Assets: Assets, Fair Value Disclosure [Abstract] Consolidated capital expenditures Segment Reporting, Long-Lived Asset, Expenditure for Addition Basic (in shares) Weighted average number of common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Accumulated impairment losses Accumulated impairment losses Goodwill, Impaired, Accumulated Impairment Loss Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Demographic update Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Demographic Update Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Demographic Update SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Business Exit, Oil And Gas Business Exit, Oil And Gas [Member] Business Exit, Oil And Gas [Member] Summary of Income Taxes Paid Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Dividend equivalents (in shares) Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Dividend Equivalents Number The number of dividend equivalents made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Distributed (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Distributed in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Distributed in Period, Weighted Average Grant Date Fair Value Sublease income Sublease Income Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Less: amounts due within one year Long-Term Debt, Current Maturities Effects of cross-border tax laws: Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Earnings per Share Earnings Per Share, Policy [Policy Text Block] Land Land [Member] Net loss on disposal of property, plant, and equipment and assets held for sale Gain (Loss) on Disposition of Property Plant Equipment Summary of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Time-based restricted stock unit awards Time Based Restricted Stock Unit Awards [Member] Represents information pertaining to time-based restricted stock unit awards of the entity. Research and Development Research and Development Expense, Policy [Policy Text Block] Total debt Long-Term Debt Aggregate purchase commitments, due in 2029 Purchase Obligation, to be Paid, Year Three Prior service cost Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax Property, Plant, Equipment and Software, net Property, Plant, and Equipment [Text Block] Changes in working capital and other: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used for investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Security Exchange Name Security Exchange Name Deferred: Deferred Income Taxes and Tax Credits [Abstract] Increase (decrease) in valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Information related to various accounting policies of the entity. Cash Flow Data: Cash Flow Data [Abstract] Cash Flow Data [Abstract] Pension plan contributions Payment for Pension Benefits Accrued interest expense Interest Payable, Current Summary of Property, Plant and Equipment, Net Property, Plant, and Equipment [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] State Deferred State and Local Income Tax Expense (Benefit) Aggregate purchase commitments, due in 2027 Purchase Obligation, to be Paid, Year One Nonqualified Plan Nonqualified Plan [Member] Geographical [Domain] Geographical [Domain] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Accrued pension liabilities Liability, Defined Benefit Pension Plan, Current Reclassification to earnings, net of tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Depreciation Deferred Tax Liabilities, Depreciation Represents the amount of deferred tax liabilities attributable to taxable temporary differences from depreciation. Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Pension and other postretirement benefit plan items Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted average number of common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Summary of Reconciliation of Benefit Obligations, Plan Assets and Funded Status of the Plans Schedule of Net Funded Status [Table Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Amounts in other comprehensive loss that are expected to recognized as components of net periodic benefit cost in the next fiscal year Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract] Accrued pension and postretirement benefits - noncurrent Liability, Defined Benefit Plan, Noncurrent Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Specialty Alloys Operations Specialty Alloys Operations Segment [Member] Represents the information pertaining to specialty alloys operations a reportable segment of the entity. Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Auditor Information [Abstract] Auditor Information [Abstract] Minimum Exercise Price Range (in dollars per share) Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit Number Exercisable (in shares) Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable Payment terms Revenue From Contract With Customer, Payment Terms Revenue From Contract With Customer, Payment Terms Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Share-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Federal Deferred Federal Income Tax Expense (Benefit) Common Stock in Treasury Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Letters of credit issued Letters of Credit Outstanding, Amount Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid $200.01 - $250.00 Exercise Price Range Five [Member] Represents the fifth range of exercise price. Industrial and Consumer Industrial And Consumer Markets [Member] Industrial And Consumer Markets [Member] Estimated future benefit payments Defined Benefit Plan, Expected Future Benefit Payment [Abstract] Amounts recognized in the consolidated balance sheets Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Balance at the beginning of the period (in dollars per share) Balance at the end of the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value All Executive Categories All Executive Categories [Member] Net actuarial loss (gain) Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Credit agreement repayments Repayments of Long-Term Lines of Credit Summary of Components of the Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Exercise Price Range [Domain] Exercise Price Range [Domain] Tangible asset impairment charges Tangible Asset Impairment Charges Summary of Calculations Basic and Diluted Earnings (Loss) per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Segment Information, Geographic and Product Data Segment Reporting [Text Block] Minimum Minimum [Member] Auditor Name Auditor Name Summary of Revenues by End-Use Markets and Geography Disaggregation of Revenue [Table Text Block] LIABILITIES Liabilities [Abstract] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Net pension expense (income) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Common stock, authorized shares (in shares) Common Stock, Shares Authorized Transportation Transportation Market [Member] Transportation Market [Member] Estimated useful life Useful Life (in Years) Intangible Asset, Finite-Lived, Useful Life Reclassifications from accumulated other comprehensive income (AOCI) Accumulated Other Comprehensive Income (Loss) [Line Items] Intangible assets Deferred Tax Liabilities, Intangible Assets Exercise Price Award Exercise Price Schedule of Restructuring and Related Costs [Table] Restructuring Cost [Table] Segment Reporting [Line Items] Segment Reporting [Line Items] Share repurchase program authorized amount Share Repurchase Program, Authorized, Amount Summary of Amounts in Other Comprehensive Loss that are Expected to be Recognized as Components of Net Periodic Benefit Cost Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Accrued Liabilities, Current [Abstract] Accrued Liabilities, Current [Abstract] Europe Europe Europe [Member] Summary of Long-Lived Assets by Geographic Segment Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block] Payments on long-term debt Repayments of Long-Term Debt Long-term rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Liability Derivatives: Derivative Liability [Abstract] Change in discount rate Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Change In Discount Rate Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Change In Discount Rate Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Reserve balance beginning of year Reserve balance end of year Restructuring Reserve Equity Component [Domain] Equity Component [Domain] Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Disclosure [Abstract] Measurement Input Type [Domain] Measurement Input Type [Domain] Foreign exchange contracts Foreign exchange contracts Foreign Exchange Contract [Member] Adoption Date Trading Arrangement Adoption Date Inventories Inventory, Policy [Policy Text Block] Restructuring Type [Axis] Restructuring Type [Axis] Number of share-based compensation plans (plan) Share Based Compensation Arrangement by Share Based Payment Award Number of Plans Represents the number of share-based compensation plans of the reporting entity. Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Total operating lease liabilities Total Operating Lease, Liability Options outstanding (in shares) Balance at the beginning of the period (in shares) Balance at the end of the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Interest income Interest Income, Operating Share Repurchase Program Treasury Stock [Text Block] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Selling, general and administrative expenses Selling, General and Administrative Expense 2028 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Type of Restructuring [Domain] Type of Restructuring [Domain] Aggregate purchase commitments, due in 2031 Purchase Obligation, to be Paid, Year Five Letter of Credit Letter of Credit [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Common Shares Stockholders' Equity, Number of Shares, Par Value and Other Disclosure [Abstract] Restricted stock unit awards Restricted Stock Units (RSUs) [Member] Summary of Changes in AOCI Associated with Derivative Hedging Activities Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Income Taxes Income Tax, Policy [Policy Text Block] Net cash provided from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation STOCKHOLDERS' EQUITY Equity, Attributable to Parent [Abstract] Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Deferred income taxes Deferred Income Tax Assets, Net Required interest coverage ratio one Debt Instrument, Covenant, Interest Coverage Ratio, One Minimum interest coverage, as defined in the agreement, which the entity is required to maintain for compliance with the terms of the agreement. 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Equity Components [Axis] Equity Components [Axis] Income taxes paid, net Income Tax Paid, after Refund Received Valuation allowances Deferred Tax Assets, Valuation Allowance Entity Interactive Data Current Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Special Alloy Operations Reporting Unit Special Alloy Operations Reporting Unit [Member] Special Alloy Operations Reporting Unit [Member] Entity Small Business Entity Small Business Withheld (in dollars per share) Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Withheld In Period, Weighted Average Exercise Price Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Withheld In Period, Weighted Average Exercise Price Comprehensive income, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Aerospace and Defense Aerospace And Defense Markets [Member] Aerospace And Defense Markets [Member] Reporting unit, percentage of fair value in excess of carrying value if fair value reduced by one half percent Reporting Unit, Percentage Of Fair Value In Excess Of Carrying Value If Long Term Growth Rate Reduced By One Half Percent Reporting Unit, Percentage Of Fair Value In Excess Of Carrying Value If Long Term Growth Rate Reduced By One Half Percent MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets Other Assets, Noncurrent Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Cancelled in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Cancelled in Period FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Document Type Document Type 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] Debt extinguishment losses Debt extinguishment losses Debt extinguishment losses Gain (Loss) on Extinguishment of Debt Accumulated benefit obligation for all pension plans Defined Benefit Plan, Accumulated Benefit Obligation Change in projected benefit obligation: Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Accrued liabilities - 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Accounts payable Increase (Decrease) in Accounts Payable Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Base Rate Base Rate [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] $50.01 - $100.00 Exercise Price Range Two [Member] Exercise Price Range Two Withheld (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Withheld In Period Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Withheld In Period Raw materials Inventories [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Debt Instrument [Axis] Debt Instrument [Axis] Performance Engineered Products Performance Engineered Products Segment [Member] Represents the information pertaining to performance engineered products a reportable segment of the entity. Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Weighted Average Remaining Contractual Term (in Years) Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted-Average Remaining Contractual Term Operating lease cost Total lease cost Lease, Cost Tax credit carryforwards Deferred Tax Assets, Tax Credit Carryforwards Summary of Fair Value and Location of Outstanding Derivative Contracts Recorded in Consolidated Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic (in dollars per share) Basic earnings per common share (in dollars per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Total current assets Assets, Current Insider Trading Arrangements [Line Items] Long-term debt Long-term debt, net of current portion Long-Term Debt, Excluding Current Maturities Changes in valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Environmental expenditures, discount rate Accrual for Environmental Loss Contingencies, Discount Rate Short-term lease cost Short-Term Lease, Cost Document Annual Report Document Annual Report Accounts receivable, net of allowance for doubtful accounts of $9.4 million and $$7.9 million at June 30, 2026 and 2025, respectively Accounts Receivable, after Allowance for Credit Loss, Current Commodity contracts Commodity Contract Commodity Contract [Member] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Cancelled in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Cancelled in Period, Weighted Average Exercise Price Proceeds from issuance of long-term debt, net of offering costs Proceeds from Issuance of Other Long-Term Debt Equity Awards Adjustments Equity Awards Adjustments [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Funded status of the plans, (underfunded) Defined Benefit Plan, Funded (Unfunded) Status of Plan Carrying amounts and estimated fair values of financial instruments not recorded at fair value Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Plan Name [Axis] Plan Name [Axis] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Other (income) expense, net Total other (income) expense, net Other (income) expense, net Other Nonoperating Income (Expense) $150.01 - $200.00 Exercise Price Range Four [Member] Represents the fourth range of exercise price. 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