Adjustments to net income: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Statistical Measurement [Domain] Statistical Measurement [Domain] Other Other Nonoperating Income Product Liability Contingency [Line Items] Product Liability Contingency [Line Items] OSB -Structural Solutions [Member] OSB - value-add [Member] OSB - value-add [Member] Product Liability Contingency [Table] Product Liability Contingency [Table] Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Operating lease assets Operating Lease, Right-of-Use Asset Segments [Axis] Segments [Axis] Trading Symbol Trading Symbol Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Other reserves Hardboard Siding Reserves [Member] Hardboard Siding Reserves [Member] Inventory [Line Items] 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March 31, 2024 and December 31, 2023. 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Shell Company Entity Shell Company Comprehensive income attributed to LP Comprehensive Income (Loss), Net of Tax, Attributable to Parent Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accrued Income Taxes, Current Accrued Income Taxes, Current Long-term portion Loss Contingency, Accrual, Noncurrent Security Exchange Name Security Exchange Name Statement [Table] Statement [Table] Net income attributed to LP per share of common stock: Earnings Per Share, Basic [Abstract] Comprehensive income associated with non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Consolidation Items [Domain] Consolidation Items [Domain] City Area Code City Area Code Semi-finished inventory Inventory, Work in Process, Net of Reserves Property, plant, and equipment, net Property, Plant and Equipment, Net Impairments of Long-Lived Assets Asset Impairment Charges [Text Block] Liabilities Liabilities Interest Paid, 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Organization, Consolidation and Presentation of Financial Statements [Abstract] Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Credit Facility [Axis] Credit Facility [Axis] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Total stockholders' equity Total stockholders' equity Equity, Attributable to Parent Treasury stock, 16 shares at cost as of March 31, 2024 and December 31, 2023 Treasury Stock, amount Treasury Stock, Value Amendment Flag Amendment Flag Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Long-term Debt, Fair Value Long-Term Debt, Fair Value Entity Registrant Name Entity Registrant Name Depreciation and amortization Depreciation, Depletion and Amortization Gross Profit Gross Profit Deferred Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit) Schedule of Product Warranty Liability [Table Text Block] 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before Income Taxes, Noncontrolling Interest Total current liabilities Liabilities, Current Total assets Assets Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Issuance of shares under stock plans Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Cost of sales Cost of Goods and Services Sold Property, plant, and equipment additions Payments to Acquire Property, Plant, and Equipment Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of Intangible Assets and Goodwill [Table Text Block] Other long-term liabilities Other Liabilities, Noncurrent Other operating income (expense) exclusive of product discontinuance charges Other operating income (expense) exclusive of product discontinuance charges Other operating income (expense) exclusive of product discontinuance charges Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for 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of Operating Segments Number of Operating Segments Net income attributed to LP Net income Net Income (Loss) Attributable to Parent Net Income (Loss) Other operating credits and charges, net Other operating credits and charges, net Other Operating Income (Expense), Net Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Accumulated Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Current portion of warranty reserves Product Warranty Accrual, Current Receivables Increase (Decrease) in Receivables Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Entity File Number Entity File Number Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Revenue from Contract with Customer [Text 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Entity Current Reporting Status Common Stock, Amount, Outstanding Common Stock, Value, Outstanding Common Stock, Value, Outstanding Retained Earnings [Member] Retained Earnings [Member] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] Accrual for Environmental Loss Contingencies, Gross Accrual for Environmental Loss Contingencies, Gross Inventories Total Inventory, Net Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Product and Service [Axis] Product and Service [Axis] Entity Address, State or Province Entity Address, State or Province Statement [Line Items] Statement [Line Items] Proceeds from sales of assets Proceeds from Sale of Productive Assets Inventory [Domain] Inventory [Domain] Amended Credit Facility Amended Credit Facility [Member] Amended Credit Facility LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Entity Filer Category Entity Filer Category Loss Contingencies [Line Items] Loss Contingencies [Line Items]