Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Total revenues, net of other expenses Total Revenues Net Of Other Expenses Total sales, net of returns, allowances and discounts, plus other non-operating income and expenses. 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Less: Allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Current Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Prepaid expenses and other Prepaid Expense and Other Assets, Current Selling, general and administrative Selling, General and Administrative Expense Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Shares attributable to stock options and restricted stock (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Pension and other postretirement benefit obligations, net Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent Entity Central Index Key Entity Central Index Key Less: accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Exports From The United States Exports From United States [Member] Exports From The United States [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Other, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Subtotal Film Products Subtotal [Member] Film Products Subtotal [Member] Income Statement [Abstract] Income Statement [Abstract] Shareholders’ equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Designated as Hedging Instrument Designated as Hedging Instrument [Member] Deferred income taxes Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] DISCONTINUED OPERATIONS Subsequent Events [Text Block] Reduction of right-of-use leased assets Operating Lease, Right-of-Use Asset, Periodic Reduction Schedule of Net Sales by Geographic Area Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] Name Forgone Recovery, Individual Name Finished goods Inventory, Finished Goods, Net of Reserves Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total assets Total Assets Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Weight of aluminum that hedged future purchase of aluminum to meet fixed-price forward sales contract obligations, lbs Derivative, Nonmonetary Notional Amount, Mass Stock-based compensation 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Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Outstanding shares (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Diluted earnings (loss) per share (in dollars per share) Earnings Per Share, Diluted Consumer durables Consumer Durables [Member] Consumer Durables [Member] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Cash Flow Hedging Cash Flow Hedging [Member] Amortization of identifiable intangibles Intangible Asset, Finite-Lived, Amortization Expense Foreign currency translation adjustment Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Freight Shipping and Handling [Member] Borrowings Proceeds from Long-Term Lines of Credit Income tax (expense) benefit Reclassification from AOCI, Current Period, Tax Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net property, plant and equipment Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Variable costs Variable costs Variable costs Interest cost Defined Benefit Plan, Interest Cost Amortization of prior service costs and net gains or losses (net of tax expense of $1 in 2026 and net of tax benefit of $14 in 2025) Amortization of prior service costs and net gains or losses Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax INVENTORIES Inventory Disclosure [Text Block] Repurchase of employee common stock for tax withholdings Stock Repurchased During Period, Value Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Inventories Increase (Decrease) in Inventories All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Gain on the sale of divested business Pre-tax gain (loss) Gain on the sale of divested business Gain (Loss) on Disposition of Business Cash retained by buyer Disposal Group, Including Discontinued Operation, Cash assumed by buyer Disposal Group, Including Discontinued Operation, Cash assumed by buyer Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Asia Asia [Member] Derivative [Line Items] Derivative [Line Items] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Service cost Defined Benefit Plan, Service Cost Amortization of identifiable intangibles Amortization Of Intangible Assets, Including Discontinued Operations Amortization Of Intangible Assets, Including Discontinued Operations Amount of pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) to net income (effective portion) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Schedule of Depreciation and 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(loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Amortization of prior service costs and net gains or losses, tax benefit Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax Termination Date Trading Arrangement Termination Date Debt assumed Disposal Group, Including Discontinued Operation, Debt Disposal Group, Including Discontinued Operation, Debt Income (loss) from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Investing activities: Discontinued Operation, Additional Disclosures [Abstract] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets Other Assets, Noncurrent Document Type Document Type Unrealized foreign currency translation adjustment, tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Accrued expenses Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Corporate expenses, net Corporate Expenses, Net Corporate expenses, net Pension and other postretirement liabilities included in "Accrued expenses" Liability, Defined Benefit Plan, Current Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Unrealized foreign currency translation adjustment (net tax of $0 in 2026 and 2025) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Arrangement Duration Trading Arrangement Duration Pension settlement loss Pre-tax Actuarial Loss for Pension Settlement Pre-tax Actuarial Loss for Pension Settlement Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Canada CANADA Other Post-Retirement Benefits Other Postretirement Benefits Plan [Member] Work-in-process Inventory, Work in Process, Gross Proceeds from the sale of assets Proceeds from Sale of Other Assets, Investing Activities Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income (loss) from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Revenues Revenues Property, plant and equipment, at cost Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Total Cash Provided by (Used in) Investing Activity, Discontinued Operation Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Machinery & equipment Machinery and Equipment [Member] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Stores, supplies and other Inventory, Supplies, Net of Reserves Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Inventories Inventories Inventory, Net All Award Types Award Type [Domain] Projected withholding taxes Disposal Group, Including Discontinued Operation, Withholding taxes Disposal Group, Including Discontinued Operation, Withholding taxes Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount PEO Name PEO Name Income (loss) from discontinued operations before income tax Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Geographical [Axis] Geographical [Axis] Summary of Derivative Instruments [Abstract] Summary of Derivative Instruments [Abstract] Gain (Loss) on Derivative Financial Instruments Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Income (loss) from discontinued operations, net of tax Disposal Group, Including Discontinued Operation, Operating Income (Loss) Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Summary of Location and Fair Value of Derivative Financial Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic earnings (loss) per share (in dollars per share) Earnings Per Share, Basic Total current assets Assets, Current Insider Trading Arrangements [Line Items] ABL revolving facility Long-Term Debt, Excluding Current Maturities Award Type Award Type [Axis] Amount of pre-tax gain (loss) recognized in other comprehensive income (loss) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Debt financing costs Payments of Financing Costs Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Total accounts and other receivables Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Product and 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Option Share-Based Payment Arrangement, Option [Member] 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] Discontinued operations (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Segments [Axis] Segments [Axis] Derivative financial instruments adjustment Other Comprehensive Income (Loss), Derivative Financial Instruments Adjustment Other Comprehensive Income (Loss), Derivative Financial Instruments Adjustment Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Schedule of Accounts and Other Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Tabular List, Table Tabular List [Table Text Block] Stock-based compensation expense Share Based Compensation Expense, Value Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, stock options, restricted stock or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Income taxes recoverable Income Taxes Receivable, Current 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] Lease liability Short-Term Lease Payments Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Total accounts and other receivables, net Receivables, Net, Current Adjustment to Compensation: Adjustment to Compensation [Axis] Selling, general and administrative costs Selling, general and administrative costs (e) Selling, general and administrative costs (e) Hedging Designation [Domain] Hedging Designation [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Accumulated other comprehensive income (loss): Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Pension and postretirement benefit plan contributions Payment for Pension and Other Postretirement Benefits Hedging Designation [Axis] Hedging Designation [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Subtotal Aluminum Extrusions Subtotal [Member] Aluminum Extrusions Subtotal [Member] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Entity Filer Category Entity Filer Category Trust for Savings Restoration Plan Trust For Saving Restoration Plan [Member] Trust For Saving Restoration Plan. Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Accounting [Text Block] Raw materials Inventory, Raw Materials, Net of Reserves Capital expenditures Payments to Acquire Property, Plant, and Equipment [Abstract] Cash and cash equivalent period decrease Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect, Continuing Operation Company Selected Measure Amount Company Selected Measure Amount Asset impairments and costs associated with exit and disposal activities, net of adjustments Asset Impairment And Costs Associated With Exit And Disposal Activities - impairment Line Amounts charged against earnings for incurred and estimated one-time, nonrecurring costs assoicated with asset impariments and exit and disposal activities. Derivative financial instruments adjustment (net of tax benefit of $406 in 2026 and net of tax expense of $171 in 2025) Other Comprehensive Income (Loss), Derivative Financial Instruments Adjustment, Net of Tax Other Comprehensive Income (Loss), Derivative Financial Instruments Adjustment, Net of Tax Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense (benefit) Income Tax Expense (Benefit) Latin America Latin America [Member] Adjustments for noncash items: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Cost of goods and services sold Add back freight Cost of Product and Service Sold Schedule of Components of Net Periodic Benefit Cost for Pension and Other Post-Retirement Benefit Programs Schedule Of Components Of Net Periodic Benefit Cost For Pension And Other Post-Retirement Benefit Programs [Table Text Block] Schedule Of Components Of Net Periodic Benefit Cost For Pension And Other Post-Retirement Benefit Programs [Table Text Block] Award Timing Method Award Timing Method [Text Block] Increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Cost of goods sold Product and Service, Other [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income (loss) Net income (loss) Net income (loss) Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Common stock shares held in trust for savings restoration plan (in shares) Common Stock, Shares Held in Employee Trust, Shares Nonresidential building & construction Nonresidential Building And Construction [Member] Nonresidential Building And Construction [Member] Interest income Investment Income, Interest Asset derivatives Derivative Asset, Subject to Master Netting Arrangement, before Offset Net income (loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Revenues and other: Revenues [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]