Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Statement [Line Items] Estimated Fair Values and Carrying Values of Long-Term Debt Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Statement [Table] Statement [Line Items] LEGAL PROCEEDINGS, COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Discontinued Operations and Disposal Groups [Abstract] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Cash and cash equivalents Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Receivables, less allowances Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Inventories Disposal Group, Including Discontinued Operation, Inventory, Current Prepaid expenses Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current Assets of discontinued operations (Note 3) Disposal Group, Including Discontinued Operation, Assets, Current Property and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Noncurrent Construction in progress Disposal Group, Including Discontinued Operation, Construction In Progress Disposal Group, Including Discontinued Operation, Construction In Progress Timber and timberlands at cost, less depletion charged to disposals Disposal Group, Including Discontinued Operation, Timber and Timberlands at cost Disposal Group, Including Discontinued Operation, Timber and Timberlands at cost Investments in and advances to joint ventures Disposal Group, Including Discontinued Operation, Investments in and Advances to Joint Ventures Disposal Group, Including Discontinued Operation, Investments in and Advances to Joint Ventures Total assets of discontinued operations Disposal Group, Including Discontinued Operation, Assets Accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable, Current Accrued liabilities Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current Liabilities of discontinued operations (Note 3) Disposal Group, Including Discontinued Operation, Liabilities, Current Long-term debt Disposal Group, Including Discontinued Operation, Long-term Debt Disposal Group, Including Discontinued Operation, Long-term Debt Deferred income taxes Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities, Noncurrent Other liabilities Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent Total liabilities of discontinued operations Disposal Group, Including Discontinued Operation, Liabilities Accrued Liabilities, Current [Abstract] Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments in Joint Ventures Disclosure [Text Block] Equity Method Investments and Joint Ventures Disclosure [Text Block] Segment Reporting [Abstract] BUSINESS SEGMENTS Segment Reporting Disclosure [Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Plum Creek [Member] Plum Creek [Member] Plum Creek [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Net sales Business Acquisition, Pro Forma Revenue Net earnings from continuing operations attributable to Weyerhaeuser common shareholders Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax Earnings from continuing operations per share attributable to Weyerhaeuser common shareholders, basic Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Basic Earnings from continuing operations per share attributable to Weyerhaeuser common shareholders, diluted Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Diluted ACCRUED LIABILITIES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Performance share units Performance Shares [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Performance period Share Based Compensation Arrangement By Share Based Payment Award Performance Period Share Based Compensation Arrangement by Share Based Payment Award, Performance Period. Valuation date closing stock price Share Price Expected dividends Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Risk-free rate minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free rate maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Expected volatility minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Real Estate Development Ventures [Member] Real Estate Development Ventures [Member] Real Estate Development Ventures [Member] Timberland Venture (Preferred Interest) [Member] Timberland Venture [Member] Timberland Venture [Member] Twin Creeks Venture [Member] Twin Creeks Venture [Member] Twin Creeks Venture [Member] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Class A Properties [Member] Class A Properties [Member] Class A Properties [Member] Class B Properties [Member] Class B Properties [Member] Class B Properties [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Preferred Stock [Member] Preferred Stock [Member] Common Stock [Member] Common Stock [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Method Investment, Ownership Percentage Equity Method Investment, Ownership Percentage Other Partner Ownership Percentage Other Partner Ownership Percentage The ownership percentage for the other partner(s) in the equity method investment. Capital Contributions Outstanding Capital Contributions Outstanding Outstanding amount of of additional capital contributions as of period-end that the reporting entity has agreed to make. Maximum Exposure to Loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Ownership percentage Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Cumulative preferred return Related Party Transaction, Rate Contributed Acres of Timberlands to Venture Contributed Acres of Timberlands to Venture Contributed Acres of Timberlands to Venture Agreed-Upon Value of Acres Contributed Agreed-Upon Value of Acres Contributed Agreed-Upon Value of Acres Contributed Proceeds from contribution of timberlands to related party (Note 7) Proceeds from Partnership Contribution Ownership Interest Ownership Interest The ownership interest (percentage) in the venture. Other Partner Ownership Interest Other Partner Ownership Interest The ownership interest (percentage) for the other partner(s) in the venture. Expected Total Committed Capital Expected Total Committed Capital Expected Total Committed Capital Expected Capital Contributions Expected Capital Contributions Expected Future Capital Contributions Guaranteed Annual Return Guaranteed Annual Return Guaranteed Annual Return (minimum) Percentage of Profit in Excess of Guaranteed Annual Return Percentage of Profit in Excess of Guaranteed Annual Return Percentage of Profit in Excess of Guaranteed Annual Return Term of related party venture Term of related party venture Term of related party venture Term of timber lease Term of timber lease Term of timber lease Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Changes in amounts included in our cumulative other comprehensive income (loss) by component Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Component of Operating Income [Abstract] OTHER OPERATING COSTS (INCOME), NET Other Income and Other Expense Disclosure [Text Block] Stock appreciation rights Stock Appreciation Rights (SARs) [Member] Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Risk-free rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Weighted average fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Weighted Average Fair Value The weighted average fair value of equity-based awards other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Other Comprehensive Income (Loss), Tax, Parenthetical Disclosures [Abstract] Tax expense (benefit) of actuarial gains (losses) Changes In Unamortized Net Pension And Other Postretirement Benefit Loss, Tax Expense (Benefit) Other Comprehensive Income Change In Net Actuarial Gain Loss Tax Tax expense (benefit) of prior service credits (costs) Changes In Unamortized Prior Service Credit, Tax Expense (Benefit) Other Comprehensive Income Change In Unamortized Prior Service Credit Tax Share-based Compensation [Abstract] SHARE-BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] CUMULATIVE OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss) Note [Text Block] Income Tax Disclosure [Abstract] Estimated annual effective tax rate for our Taxable REIT Subsidiary Effective Income Tax Rate Reconciliation, Percent Receivables for taxes Income Taxes Receivable, Current Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Tax liability from potential adjustment Tax Liability from Potential Adjustment The maximum tax liability to the entity that could result if the potential adjustment proposed by the tax authority was upheld on administrative or judicial review. Gain from potential tax adjustment Gain from Potential Tax Adjustment For an entity that is not subject to income taxes, because its income is taxed directly to its owners, this amount represents the maximum gain from potential adjustment by the taxing authority. The gain would be taxable to the entity's owners. Percentage of gain distributed in common stock Percentage of Gain Distributed in Common Stock For an entity that is not subject to income taxes, because its income is taxed directly to its owners, the percentage of gain that could be distributed to shareholders in the entity's common stock. The remainder of the gain would be distributed to shareholders in cash. Segment Reporting, Assets Reconciling Item [Abstract] Segment Reporting, Assets Reconciling Item [Abstract] Reconciliation of Assets from Segment to Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Operating Activities [Axis] Operating Activities [Axis] Operating Activities [Domain] Operating Activities [Domain] Continuing operations Continuing Operations [Member] Discontinued operations Discontinued Operations [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating segments Operating Segments [Member] Unallocated items Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Timberlands and Real Estate & ENR Timberlands and Real Estate & ENR [Member] Timberlands and Real Estate & ENR [Member] Wood Products Wood Products Member Wood Products [Member] Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Assets Assets Assets of discontinued operations Supplemental Cash Flow Information [Abstract] Interest, amount capitalized Interest Paid, Capitalized Reconciliation of Revenue from Segments to Consolidated Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Reconciliation of Assets from Segment to Consolidated Reconciliation of Assets from Segment to Consolidated [Table Text Block] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] U.S. and Canadian Other Postretirement Plans Other Postretirement Benefit Plan [Member] Gain on disposition of nonstrategic assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Foreign exchange losses (gains), net Foreign Currency Transaction Gain (Loss), before Tax Litigation expense, net Gain (Loss) Related to Litigation Settlement Other, net Other Operating Income Total other operating costs (income), net Other Operating Income (Expense), Net Statement of Comprehensive Income [Abstract] Net earnings Net Income (Loss) Attributable to Parent Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Actuarial gains, net of tax expense of $17, $24, $25 and $50 OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodAndReclassificationOfNetGainLossRecognizedInNetPeriodPeriodicBenefitCostNetOfTax The accumulated change (increase) decrease in the value of either the projected benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost and the adjustment out of other comprehensive income for actuarial (gains) or losses recognized as a component of net periodic benefit cost during the period, after tax. Prior service costs, net of tax expense (benefit) of $(1), $1, $0, and $1 OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetPriorServiceCreditCostArisingDuringPeriodandAmortizationofNetPriorServiceCostRecognizedinNetPeriodicPensionCostNetofTax The credit (cost) resulting from a plan amendment that occurred during the period and has not been recognized in net periodic benefit cost and the adjustment out of other comprehensive income for prior service costs recognized as a component of net period benefit cost during the period, net of tax. Plan amendment includes provisions that grant increased benefits based on service rendered in prior periods. Unrealized gains on available-for-sale securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Total other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income attributable to Weyerhaeuser common shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Charges related to integration and restructuring Restructuring Charges [Abstract] Termination benefits Severance Costs Acceleration of share-based compensation related to qualifying terminations (Note 14) Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost Acceleration of pension benefits related to qualifying terminations (Note 8) Accelerated Pension Benefits Additional pension benefit cost recognized as a result of an occurrence of an event that accelerates its recognition. Professional services Professional Fees Other integration and restructuring costs Other Integration and Restructuring Costs Other Integration and Restructuring Costs Total integration and restructuring charges related to our merger with Plum Creek Business Combination, Integration Related Costs Other closures and restructuring costs Other Closures and Restructuring Costs Other Closures and Restructuring Costs Impairments of long-lived assets Impairment of Long-Lived Assets Held-for-use Total charges for integration and restructuring, closures and impairments Restructuring, Settlement and Impairment Provisions Statement of Cash Flows [Abstract] Cash flows from operations: Net Cash Provided by (Used in) Operating Activities [Abstract] Noncash charges (credits) to earnings: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation, depletion and amortization Depreciation, Depletion and Amortization Basis of real estate sold Basis of Land Sold Basis of Land Sold Deferred income taxes, net Deferred Income Tax Expense (Benefit) Pension and other postretirement benefits (Note 8) Pension and Other Postretirement Benefit Expense Share-based compensation expense Share-based Compensation Charges for impairment of assets Asset Impairment Charges Equity (earnings) loss from joint ventures (Note 7) Income (Loss) from Equity Method Investments Net gains on dispositions of assets and operations Gain (Loss) on Disposition of Property Plant Equipment Foreign exchange transaction (gains) losses (Note 16) Foreign Currency Transaction Gain (Loss), Unrealized Change in: Increase (Decrease) in Operating Capital [Abstract] Receivables less allowances Increase (Decrease) in Receivables Receivable for taxes Increase (Decrease) in Income Taxes Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses Increase (Decrease) in Prepaid Expense Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Pension and postretirement contributions (Note 8) Pension and Other Postretirement Benefit Contributions Distributions received from joint ventures Proceeds from Equity Method Investment, Dividends or Distributions Other Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash from operations Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures for property and equipment Payments to Acquire Property, Plant, and Equipment Capital expenditures for timberlands reforestation Payments for Capital Improvements Acquisition of timberlands Payments to Acquire Timberlands Proceeds from sale of assets Proceeds from Sale of Productive Assets Distributions received from joint ventures Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital Cash and cash equivalents acquired in Plum Creek merger (Note 4) Cash Acquired from Acquisition Other Payments for (Proceeds from) Other Investing Activities Cash from (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Cash dividends on common shares Payments of Ordinary Dividends, Common Stock Cash dividends on preference shares Payments of Ordinary Dividends, Preferred Stock and Preference Stock Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Payments on debt Repayments of Long-term Debt Repurchase of common stock (Note 5) Payments for Repurchase of Common Stock Other Proceeds from (Payments for) Other Financing Activities Cash from financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents from continuing operations at beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents from discontinued operations at beginning of period Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations Cash and cash equivalents from continuing operations at end of period Cash and cash equivalents from discontinued operations at end of period Cash and cash equivalents at end of period Cash paid (received) during the period for: Interest, net of amount capitalized of $3 and $3 Interest Paid, Net Income taxes Income Taxes Paid, Net Noncash investing and financing activities: Noncash Investing and Financing Items [Abstract] Equity issued as consideration for our merger with Plum Creek (Note 4) Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Net sales Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Loss before income taxes Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Pension Pension Plan [Member] Other Postretirement Benefits Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Service cost(1) Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Amortization of actuarial loss Defined Benefit Plan, Amortization of Gains (Losses) Amortization of prior service cost (credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Accelerated pension costs included in Plum Creek merger-related costs (Note 15) Total net periodic benefit cost (credit) Defined Benefit Plan, Net Periodic Benefit Cost Inventory Disclosure [Abstract] INVENTORIES Inventory Disclosure [Text Block] Accounting Policies [Abstract] Shares withheld by employer for tax-withholding purposes Payments Related to Tax Withholding for Share-based Compensation Pulp Manufacturing [Member] Pulp Manufacturing [Member] Pulp Manufacturing [Member] Liquid Packaging Board [Member] Liquid Packaging Board [Member] Liquid Packaging Board [Member] Proceeds from divestiture of business Proceeds from Divestiture of Businesses Exchange ratio per the merger agreement Equity shares issued or issuable conversion ratio The conversion ratio ratio for equity shares issued or issuable to acquire entity. Merger-related costs Non-recurring merger-related costs Business Combination, Acquisition Related Costs Wages, salaries and severance pay Employee-related Liabilities, Current Pension and other postretirement benefits Pension and Other Postretirement Defined Benefit Plans, Current Liabilities Vacation pay Accrued Vacation, Current Taxes – Social Security and real and personal property Accrual for Taxes Other than Income Taxes, Current Interest Interest Payable, Current Customer rebates and volume discounts Customer Refund Liability, Current Deferred income Deferred Revenue, Current Other Other Accrued Liabilities, Current Total Accrued Liabilities, Current Debt Disclosure [Abstract] Debt Disclosure [Text Block] Debt Disclosure [Text Block] Equity Method Investments [Table Text Block] Equity Method Investments [Table Text Block] Foreign currency translation adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Actuarial losses Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Prior service credits (costs) Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Unrealized gains on available-for-sale securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Beginning balance Accumulated Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Income taxes Other Comprehensive Income (Loss) before Reclassifications, Tax Net other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amounts reclassified from cumulative other comprehensive income (loss)(1) Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Income taxes Reclassification from AOCI, Current Period, Tax Net amounts reclassified from cumulative other comprehensive income (loss) Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Ending balance Inventory, Current [Table] Inventory, Current [Table] Inventory [Axis] Inventory [Axis] Inventory [Domain] Inventory [Domain] Logs and chips Logs and Chips [Member] Logs and Chips [Member] Lumber, plywood and panels Lumber, Plywood and Panels [Member] Lumber, Plywood and Panels [Member] Lumber, plywood, panels and engineered wood products Lumber, Plywood, Panels and Engineered Lumber [Member] Lumber, Plywood, Panels and Engineered Lumber [Member] Other products Inventory, Other Products [Member] Inventory, Other Products [Member] Materials and supplies Inventory, Raw Materials and Supplies [Member] Inventory, Raw Materials and Supplies [Member] Inventory [Line Items] Inventory [Line Items] LIFO inventories LIFO Inventory Amount FIFO or moving average cost inventories FIFO and Moving Average Cost Methods Inventories The amount of FIFO (first in first out) inventory and moving average cost inventory present at the reporting date when inventory is valued using different valuation methods. Total Inventory, Net Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock options Employee Stock Option [Member] Preference shares Nonredeemable Convertible Preferred Stock [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Potential shares not included in the computation of diluted earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Other Income and Expenses [Abstract] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Gain on disposition of nonstrategic assets Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Accrued severance as of December 31, 2015 Restructuring Reserve Charges Payments Payments for Restructuring Accrued severance as of June 30, 2016 Disposal Groups, Including Discontinued Operations [Table Text Block] Disposal Groups, Including Discontinued Operations [Table Text Block] Schedule of Disposal Groups Including Discontinued Operations Balance Sheet [Table Text Block] Schedule of Disposal Groups Including Discontinued Operations Balance Sheet [Table Text Block] Schedule of Disposal Groups Including Discontinued Operations Balance Sheet [Table Text Block] Schedule of Disposal Groups Including Discontinued Operations Cash Flows [Table Text Block] Schedule of Disposal Groups Including Discontinued Operations Cash Flows [Table Text Block] Schedule of Disposal Groups Including Discontinued Operations Cash Flows [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Consolidation, Policy Consolidation, Policy [Policy Text Block] New Accounting Pronouncements, Policy New Accounting Pronouncements, Policy [Policy Text Block] Earnings Per Share, Policy Earnings Per Share, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy Fair Value of Financial Instruments, Policy [Policy Text Block] Weighted Average Assumptions Used in Estimating the Value of Stock Options Granted Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Weighted Average Assumptions Used in Estimating the Value of Performance Share Units Granted Weighted Average Assumptions Used In Estimating The Value Of Performance Share Units Granted Tabular disclosure of the significant assumptions used during the year to estimate the fair value of performance share units, including, but not limited to: (a) expected term of performance share units and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Weighted Average Assumptions Used to Remeasure the Value of Stock Appreciation Rights Weighted Average Assumptions Used To Remeasure Value Of Stock Appreciation Rights Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock appreciation rights, including, but not limited to: (a) expected term of stock appreciation rights and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Timberland Venture [Member] Equity earnings from joint ventures (Note 7) Income (Loss) From Equity Method Investments from Continuing Operations This item represents the entity's proportionate share (from continuing operations) for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Investments in and advances to joint ventures Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Condensed Consolidating Financial Information [Abstract] Condensed Consolidating Financial Information [Abstract] Condensed Income Statement [Table Text Block] Condensed Income Statement [Table Text Block] Condensed Statement of Comprehensive Income [Table Text Block] Condensed Statement of Comprehensive Income [Table Text Block] Condensed Balance Sheet [Table Text Block] Condensed Balance Sheet [Table Text Block] Condensed Cash Flow Statement [Table Text Block] Condensed Cash Flow Statement [Table Text Block] Inventories Schedule of Inventory, Current [Table Text Block] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Unallocated Items Noncash impairment charge related to a nonstrategic asset Pension and Other Postretirement Benefit Expense [Abstract] PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS Pension and Other Postretirement Benefits Disclosure [Text Block] Earnings Per Share, Basic and Diluted [Abstract] NET EARNINGS PER SHARE Earnings Per Share [Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] Restricted stock units Restricted Stock [Member] Value management awards [Member] Value management awards [Member] Value management awards [Member] Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Shares of common stock issued as a result of restricted stock unit vesting, performance share unit vesting and stock option exercises Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Value management awards assumed Share Based Compensation Arrangement by Share Based Payment Award Liability Awards Asssumed The number of liability awards assumed during the period. Fair value of stock options(4) Value of Replacement Stock Options Issued Value of Replacement Stock Option Awards Issued Accelerated vesting of replacement RSUs Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number Weighted average exercise price of stock options granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted average fair value of units granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Final number of shares awarded of each grant's target Final Number Of Shares Awarded Of Each Grant's Target Share Based Compensation Arrangement by Share Based Payment Award, Outstanding Award as Percentage of Shares Issued Net cash provided by operating activities Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash used in investing activities Cash Provided by (Used in) Investing Activities, Discontinued Operations Income Statement [Abstract] Net sales Revenue, Net Costs of products sold Cost of Goods Sold Gross margin Gross Profit Selling expenses Selling Expense General and administrative expenses General and Administrative Expense Research and development expenses Research and Development Expense Charges for integration and restructuring, closures and asset impairments (Note 15) Other operating costs (income), net (Note 16) Operating income Operating Income (Loss) Interest income and other Interest and Other Income Interest expense, net of capitalized interest Interest Expense Income taxes (Note 17) Income Tax Expense (Benefit) Earnings from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Earnings from discontinued operations, net of income taxes (Note 3) Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Net earnings Dividends on preference shares Preferred Stock Dividends, Income Statement Impact Net earnings attributable to Weyerhaeuser common shareholders Net Income (Loss) Available to Common Stockholders, Basic Earnings per share attributable to Weyerhaeuser common shareholders, basic and diluted (Note 5): Earnings Per Share, Basic [Abstract] Continuing operations Income (Loss) from Continuing Operations, Per Basic Share Discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Net earnings per share Earnings Per Share, Basic Dividends paid per share Common Stock, Dividends, Per Share, Cash Paid Weighted average shares outstanding (in thousands) (Note 5): Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic Diluted Weighted Average Number of Shares Outstanding, Diluted Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Fixed interest rate [Member] Fixed interest rate [Member] Fixed interest rate [Member] Variable interest rate [Member] Variable interest rate [Member] Variable interest rate [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Note Payable to Timberland Venture [Member] Note Payable to Timberland Venture [Member] Note Payable to Timberland Venture [Member] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] FAIR VALUE OF FINANCIAL INSTRUMENTS [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Long-term Debt, Excluding Current Maturities Long-term Debt, Excluding Current Maturities Long-term Debt, Fair Value Long-term Debt, Fair Value Note payable to Timberland Venture (Note 10) Due to Related Parties, Noncurrent Note Payable to Timberland Venture, Fair Value Disclosure Debt Instrument, Fair Value Disclosure Total Debt Total Debt Total debt, including long-term debt and note payable to related party. FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Earnings Per Share, Diluted, Other Disclosures [Abstract] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Dilutive potential common shares Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Components of Net Periodic Benefit Costs (Credits) Schedule of Net Benefit Costs [Table Text Block] Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Senior Note due 2021 [Member] Senior Note due 2021 [Member] Senior Note due 2021 [Member] Senior Note due 2023 [Member] Senior Note due 2023 [Member] Senior Note due 2023 [Member] Installment Note Payable [Member] Installment Note Payable [Member] Installment Note Payable [Member] Term Loan due August 2017 [Member] Term Loan due August 2017 [Member] Term Loan due August 2017 [Member] Term Loan due September 2017 [Member] Term Loan due September 2017 [Member] Term Loan due September 2017 [Member] Repayments of Long-term Debt Long-term Debt Long-term Debt, Gross Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Principal due to Timberland Venture Principal due to Timberland Venture Principal due to Timberland Venture Annual interest rate on note payable Note payable to Timberland Venture (Note 10) Term Loan, Maximum Borrowing Capacity Term Loan, Maximum Borrowing Capacity Maximum borrowing capacity under the term loan without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the term loan. Interest Rate Terms Debt Instrument, Interest Rate Terms Term Loan, Outstanding Term Loan, Outstanding The carrying value as of the balance sheet date of the outstanding long-term obligations drawn from a term loan, which is a bank's commitment to make loans up to a specific amount. CHARGES FOR RESTRUCTURING, CLOSURES AND ASSET IMPAIRMENTS Restructuring, Impairment, and Other Activities Disclosure [Text Block] BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Commitments and Contingencies Disclosure [Table] Loss Contingencies [Table] Commitments and Contingencies Disclosure [Line Items] Loss Contingencies [Line Items] Accrued estimated remediation costs Environmental Exit Costs, Assets Previously Disposed, Liability for Remediation Asset retirement obligations Asset Retirement Obligation Number of Plum Creek common shares outstanding(1) Shares, Outstanding Weyerhaeuser shares issued in exchange for Plum Creek equity(2) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Price per Weyerhaeuser common share(3) Business Acquisition, Share Price Aggregate value of Weyerhaeuser common stock issued Business Acquisition, Equity Interest Issued or Issuable, Value Assigned Estimated consideration transferred Business Combination, Consideration Transferred Business Combination Disclosure [Text Block] Business Combination Disclosure [Text Block] Schedule of Consideration Transferred [Table Text Block] Schedule of Business Acquisitions, by Acquisition [Table Text Block] Actual Impact of Acquisition [Table Text Block] Actual Impact of Acquisition [Table Text Block] The amount of revenue and net income included in the entity's Statement of Income attributable to the acquisition.[Table Text Block] Business Acquisition, Pro Forma Information [Table Text Block] Business Acquisition, Pro Forma Information [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Statement of Financial Position [Abstract] 6.375 percent Mandatory Convertible Preference Shares, Series A Receivables, allowances Allowance for Doubtful Accounts Receivable, Current Property and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Preference shares, par value Preferred Stock, Par or Stated Value Per Share Preference shares, liquidation Preferred Stock, Liquidation Preference Per Share Preference shares, authorized Preferred Stock, Shares Authorized Preference shares, issued Preferred Stock, Shares Issued Preference shares, outstanding Preferred Stock, Shares Outstanding Common shares, par value Common Stock, Par or Stated Value Per Share Common shares, authorized Common Stock, Shares Authorized Common shares, issued Common Stock, Shares, Issued Common shares, outstanding Common Stock, Shares, Outstanding Items Included in Our Restructuring, Closure and Asset Impairment Charges Restructuring and Related Costs [Table Text Block] Changes in accrued severance related to restructuring Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Increase in inventory amount if FIFO would have been used Inventory, LIFO Reserve Condensed Consolidating Financial Statements [Text Block] Condensed Financial Statements [Text Block] Document and Entity Information [Abstract] Document - Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information, Document [Axis] Document Information, Document [Axis] Document [Domain] Document [Domain] Document Information [Line Items] Document Information [Line Items] Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Unsettled Share Repurchases [Member] Unsettled Share Repurchases [Member] Unsettled Share Repurchases [Member] Basic and diluted earnings per share attributable to Weyerhaeuser common shareholders Earnings Per Share, Basic and Diluted Stock repurchase program, shares repurchased Stock Repurchased and Retired During Period, Shares Stock repurchase program, shares repurchased value Stock Repurchased and Retired During Period, Value Stock repurchase program, authorized repurchase amount Stock Repurchase Program, Authorized Amount Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Preference shares conversion ratio Preference shares conversion ratio The conversion ratio for the conversion of preference shares. Shares issued upon conversion of stock Conversion of Stock, Shares Issued Volume weighted average price per share Volume weighted average price per share Volume weighted average price per common share over the trading period. ASSETS Assets [Abstract] Cash and cash equivalents Receivables, less allowances of $2 and $1 Receivables, Net, Current Inventories (Note 6) Prepaid expenses and other current assets Prepaid Expense, Current Total current assets Assets, Current Property and equipment, less accumulated depreciation of $3,334 and $3,291 Property, Plant and Equipment, Net Construction in progress Construction in Progress, Gross Timber and timberlands at cost, less depletion charged to disposals Timber and Timberlands Minerals and mineral rights, net Minerals and Mineral Rights Amount after amortization of minerals and mineral rights. Investments in and advances to joint ventures (Note 7) Goodwill Goodwill Other assets Other Assets, Noncurrent Restricted financial investments held by variable interest entities Restricted Investments, Noncurrent Total assets LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Liabilities Liabilities [Abstract] Notes payable Notes Payable, Current Accounts payable Accounts Payable, Current Accrued liabilities (Note 9) Total current liabilities Liabilities, Current Long-term debt (Note 10) Long-term debt (nonrecourse to the company) held by variable interest entities Non-Recourse Debt Deferred pension and other postretirement benefits Pension and Other Postretirement and Postemployment Benefit Plans, Liabilities, Noncurrent Deposit from contribution of timberlands to related party (Note 7) Deposit from contribution of timberlands to joint venture Deposit from contribution of timberlands to joint venture Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 12) Commitments and Contingencies Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Mandatory convertible preference shares, series A: $1.00 par value; $50.00 liquidation; authorized 40,000,000 shares; issued and outstanding: 13,693,046 and 13,799,711 shares Preferred Stock, Value, Outstanding Common shares: $1.25 par value; authorized 1,360,000,000 shares; issued and outstanding: 733,010,052 and 510,483,285 shares Common Stock, Value, Outstanding Other capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Cumulative other comprehensive loss (Note 13) Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity Weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value INCOME TAXES Income Tax Disclosure [Text Block] Segment Reconciliation [Abstract] Reconciliation of Revenue from Segments to Consolidated [Table] Reconciliation of Revenue from Segments to Consolidated [Table] Operating Intersegments [Member] Operating Intersegments [Member] Identifies components of an entity that engage in business activities with other components of the same entity from which they may earn revenue and incur expenses. Intersegment eliminations Intersegment Eliminations [Member] Timberlands Timberlands Member Timberlands [Member] RE & ENR RE & ENR [Member] Real Estate, Energy and Natural Resources (RE & ENR) Member Segment Reporting, Revenue Reconciling Item [Line Items] Net contribution to earnings Net Contribution To Earnings This element represents the income or (loss) from continuing operations (before interest expense) attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before, interest expense, income taxes, extraordinary items, and noncontrolling interest. Income taxes Earnings from continuing operations Earnings from discontinued operations, net of income taxes Net earnings attributable to Weyerhaeuser common shareholders Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Previously Reported [Member] Scenario, Previously Reported [Member] Measurement period adjustments [Member] Scenario, Adjustment [Member] Updated valuation [Member] Scenario, Actual [Member] Current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Timber and timberlands Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Timber and Timberlands The amount of timber and timberlands recognized as of the acquisition date. Minerals and mineral rights Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Minerals and Mineral Rights The amount of minerals and mineral rights recognized as of the acquisition date. Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Equity Investments in Joint Ventures Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Investments in Joint Ventures Investments in joint ventures acquired as of the acquistion date. Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Note Payable to Timberland Venture BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesDueToRelatedParties Amount of related party debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. Other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Pension Plan [Member] Registered Canadian Pension Plan Registered Pension Plans [Member] Registered Pension Plans [Member] Non Registered Canadian Pension Plans Non Registered Plans [Member] Non Registered Plans [Member] U.S. Non-Qualified Pension Plans Non Qualified Pension Plans Defined Benefit [Member] Non-Qualified Pension Plans, Defined Benefit [Member] U.S. Qualified Pension Plan Qualified Pension Plans, Defined Benefit [Member] Qualified Pension Plans, Defined Benefit [Member] Cumulative funded status of assumed plan Defined Benefit Plan, Funded Status of Plan Expected return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets Plan assets held in grantor trust Other Marketable Securities, Noncurrent Increase (decrease) in fair value of plan assets Defined Benefit Plan, Fair Value of Plan Assets, Period Increase (Decrease) Change in Fair Value of Pension Assets (%) Change in Fair Value of Pension Assets (%) Change in Fair Value of Pension Assets (%) Increase (decrease) in fair value of plan benefit obligation Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease) Change in Projected Benefit Obligation (%) Change in Projected Benefit Obligation (%) Change in Projected Benefit Obligation (%) Increase (decrease) in funded status of plan Defined Benefit Plan, Funded Status, Period Increase (Decrease) Defined Benefit Plan, Funded Status, Period Increase (Decrease) Fair value of plan assets Defined Benefit Plan, Fair Value of Plan Assets Fair value of projected benefit obligation Defined Benefit Plan, Benefit Obligation Expected contribution to benefit plans during 2016 Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year Items Included in Other Operating Costs (Income), Net Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Potential Shares Not Included in the Computation of Diluted Earnings per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Reportable Legal Entities [Member] Reportable Legal Entities [Member] Consolidation, Eliminations [Member] Consolidation, Eliminations [Member] Parent Company [Member] Parent Company [Member] Subsidiary Issuer [Member] Subsidiary Issuer [Member] Non-Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Guaranteed registered debt securities Debt Instrument, Face Amount Gross margin Other operating expenses, net Other Cost and Expense, Operating Operating income Non-operating expense, net Nonoperating Income (Expense) Net earnings Actuarial gains, net of tax expense Prior service costs, net of tax expense Total other comprehensive income Comprehensive income (loss) Other current assets Other Assets, Current Total current assets Property and equipment, net Timber and timberlands at cost, net Investments in and advances to subsidiaries Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure Other assets Other Assets, Miscellaneous, Noncurrent Total assets Current liabilities Other Liabilities, Current Total current liabilities Note payable to Timberland Venture Long-term debt Other long-term liabilities Other Sundry Liabilities, Noncurrent Total liabilities Mandatory convertible preference shares Preferred Stock, Including Additional Paid in Capital Common shares Common Stocks, Including Additional Paid in Capital Other equity Other equity Other stockholders' equity not otherwise shown separately. Total equity Total liabilities and equity Net cash from (used in) operations Capital expenditures Payments to acquire property, plant and equipment and for capital improvements The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale, and the acquisition of or capital improvements to properties held for investment (operating, managed, leased) or for use. Includes cash outflows to pay for construction of self-constructed assets. Proceeds from sale of non-strategic assets Cash acquired in merger with Plum Creek Issuance of note to parent Origination of Notes Receivable from Related Parties Distribution from subsidiaries Proceeds from Contributions from Affiliates Net cash from (used in) investing activities Net proceeds from issuance of debt Proceeds from note from subsidiary Proceeds from Related Party Debt Repurchase of common stock Distribution to parent Payments of Distributions to Affiliates Other Net cash from (used in) financing activities Total net sales Disposal Group, Including Discontinued Operation, Revenue Costs of products sold Disposal Group, Including Discontinued Operation, Costs of Goods Sold Gross margin Disposal Group, Including Discontinued Operation, Gross Profit (Loss) Selling expenses Disposal Group, Including Discontinued Operations, Selling Expenses Disposal Group, Including Discontinued Operations, Selling Expenses General and administrative expenses Disposal Group, Including Discontinued Operation, General and Administrative Expense Research and development expenses Disposal Group, Including Discontinued Operation, Research and Development Expense Disposal Group, Including Discontinued Operation, Research and Development Expense Charges for integration and restructuring, closures and asset impairments(1) Disposal Group, Including Discontinued Operation, Charges for Integration and Restructuring, Closures and Impairments Disposal Group, Including Discontinued Operation, Charges for Integration and Restructuring, Closures and Impairments Other operating income, net Disposal Group, Including Discontinued Operation, Other Operating Income Disposal Group, Including Discontinued Operation, Other Operating Income Operating income Disposal Group, Including Discontinued Operation, Operating Income (Loss) Equity loss from joint venture Disposal Group, Including Discontinued Operation, Equity Income (Loss) from Joint Venture Disposal Group, Including Discontinued Operation, Equity Income (Loss) from Joint Venture Interest expense, net of capitalized interest Disposal Group, Including Discontinued Operation, Interest Expense Earnings from discontinued operations before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income taxes Discontinued Operation, Tax Effect of Discontinued Operation