INCOME TAXES Footnote	6 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes [Note Text Block]	NOTE 13 - INCOME TAXES International Paper made income tax payments, net of refunds, of $112 million and $101 million for the six months ended June 30, 2018 and 2017, respectively. The Company currently estimates, that as a result of ongoing discussions, pending tax settlements and expirations of statutes of limitations, the amount of unrecognized tax benefits could be reduced by approximately $3 million during the next 12 months. International Paper uses the flow-through method to account for investment tax credits earned on eligible open loop-biomass facilities and Combined Heat and Power system expenditures. Under this method, the investment tax credits are recognized as a reduction to income tax expense in the year they are earned rather than a reduction in the asset basis. The Company recorded a tax benefit of $6 million and $0 million for the six months ended June 30, 2018 and 2017, respectively. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the Tax Act). The Tax Act makes broad and complex changes to the U.S. tax code, including, but not limited to, (1) reducing the U.S. federal corporate tax rate from 35% to 21%; (2) requiring companies to pay a one-time deemed repatriation transition tax (the Transition Tax) on certain earnings of foreign subsidiaries; (3) generally eliminating U.S. federal income taxes on dividends from foreign subsidiaries; (4) requiring a current inclusion in U.S. federal taxable income of certain earnings of controlled foreign corporations; (5) eliminating the corporate alternative minimum tax (AMT) and changing how AMT credits can be realized; (6) capital expensing; (7) eliminating the deduction on U.S. manufacturing activities; and (8) creating new limitations on deductible interest expense and executive compensation. The Securities Exchange Commission staff issued Staff Accounting Bulletin (SAB) 118 which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Tax Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the Tax Act. In connection with our initial analysis of the impact of the Tax Act, we recorded a provisional net tax benefit of $1.22 billion in the period ending December 31, 2017. The net tax benefit primarily consisted of a net tax benefit for the re-measurement of U.S. deferred taxes of $1.454 billion and an expense for the Transition Tax of $231 million. For various reasons that are discussed more fully below, as of the quarter ended June 30, 2018, we have not completed our accounting for the income tax effects of the Tax Act. Our accounting for the following elements of the Tax Act is incomplete as of June 30, 2018. The estimates reported in the period ending December 31, 2017, were not adjusted in the period ending June 30, 2018. As of the period ended June 30, 2018, there has been no change or clarification in guidance issued or interpretations or assumptions we have made that caused a change to the estimates reported in the period ending December 31, 2017. Reduction of U.S. federal corporate tax rate: The Tax Act reduced the corporate tax rate to 21%, effective January 1, 2018. For certain of our deferred tax assets and liabilities, we recorded a provisional net decrease of $1.451 billion with a corresponding adjustment to deferred income tax benefit in the same amount for the year ended December 31, 2017. While we are able to make a reasonable estimate of the impact of the reduction in the corporate rate, it may be affected by other analysis related to the Tax Act, including but not limited to, the state tax effect of adjustments made to federal temporary differences. Deemed Repatriation Transition Tax: This is a tax on previously untaxed accumulated and current earnings and profits (“E&P”) of foreign subsidiaries. To determine the amount of the transition tax, we must determine, in addition to other factors, the amount of post-1986 E&P of the relevant subsidiaries, as well as the amount of non-U.S. income taxes paid on such earnings. We were able to make a reasonable estimate of the Transition Tax and recorded a provisional Transition Tax obligation of $231 million in the tax period ending December 31, 2017. Valuation Allowances: The Company has assessed whether its U.S. state and local income tax valuation allowance analysis is affected by various aspects of the Tax Act (e.g. deemed repatriation of foreign income, acceleration of cost recovery). Since, as discussed herein, the Company has recorded provisional amounts related to elements of the Tax Act, any corresponding determination of the need for or change in a valuation allowance is also provisional. For certain of our state deferred tax assets, we recorded a net $3 million provisional decrease in the recorded valuation allowance with a corresponding adjustment to deferred income tax benefit in the same amount for the year ended December 31, 2017. While we are able to make a reasonable estimate of the impact of the Tax Act on state attributes, the resolution of, or changes from, other factors noted herein may result in changes in our recorded valuation allowance. The Tax Act may impact decisions surrounding the Company’s permanent reinvestment assertions related to its foreign investments and could have an impact on the Company’s accounting for untaxed outside basis differences. We previously considered the earnings in our non-U.S. subsidiaries to be permanently reinvested, and, accordingly deferred income taxes were not provided for such basis differences which totaled approximately $5.9 billion at December 31, 2017. While the transition tax resulted in a reduction in these basis differences, an actual repatriation from our non-U.S. subsidiaries could still be subject to additional taxes, including, but not limited to, foreign withholding taxes and U.S. state income taxes. In light of the Tax Act, the Company is evaluating its global cash management and non-U.S. repatriation strategy but we have yet to determine whether we plan to change our prior assertion. Accordingly, we have not recorded any deferred taxes attributable to our investments in our non-U.S. subsidiaries. These estimates may change materially due to, among other things, further clarification of existing guidance that may be issued by U.S. taxing authorities or regulatory bodies and/or changes in interpretations and assumptions we have preliminarily made. We will continue to analyze the Tax Act to finalize its financial statement impact, including the mandatory deemed repatriation of foreign earnings, re-measurement of deferred taxes and all other provisions of the legislation and will record the effects of any changes to provisional amounts in the period we can complete our analysis or are first able to make a reasonable estimate, but no later than December 2018. Because of the complexity of the new Global Intangible Low Tax Income (GILTI) rules, we are continuing to evaluate this provision of the Act and the application of ASC 740. Under U.S. GAAP, we are allowed to make an accounting policy choice of either (1) treating taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the “period cost method”) or (2) factoring such amounts into a company’s measurement of its deferred taxes (the “deferred method”). Our selection of an accounting policy related to the new GILTI tax rules will depend, in part, on analyzing our global income to determine whether we expect to have future U.S. inclusions in taxable income related to GILTI and, if so, what the impact is expected to be. Because whether we expect to have future U.S. inclusions in taxable income related to GILTI depends on a number of different aspects of our estimated future results of global operations, we are not yet able to reasonably estimate the long-term effects of this provision of the Act. Therefore, we have not recorded any potential deferred tax effects related to GILTI in our financial statements and have not made a policy decision regarding whether to record deferred taxes on GILTI or use the period cost method. We expect to complete our accounting within the prescribed measurement period.

International Paper made income tax payments, net of refunds, of $112 million and $101 million for the six months ended June 30, 2018 and 2017, respectively.

The Company currently estimates, that as a result of ongoing discussions, pending tax settlements and expirations of statutes of limitations, the amount of unrecognized tax benefits could be reduced by approximately $3 million during the next 12 months.

International Paper uses the flow-through method to account for investment tax credits earned on eligible open loop-biomass facilities and Combined Heat and Power system expenditures. Under this method, the investment tax credits are recognized as a reduction to income tax expense in the year they are earned rather than a reduction in the asset basis. The Company recorded a tax benefit of $6 million and $0 million for the six months ended June 30, 2018 and 2017, respectively.

On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the Tax Act). The Tax Act makes broad and complex changes to the U.S. tax code, including, but not limited to, (1) reducing the U.S. federal corporate tax rate from 35% to 21%; (2) requiring companies to pay a one-time deemed repatriation transition tax (the Transition Tax) on certain earnings of foreign subsidiaries; (3) generally eliminating U.S. federal income taxes on dividends from foreign subsidiaries; (4) requiring a current inclusion in U.S. federal taxable income of certain earnings of controlled foreign corporations; (5) eliminating the corporate alternative minimum tax (AMT) and changing how AMT credits can be realized; (6) capital expensing; (7) eliminating the deduction on U.S. manufacturing activities; and (8) creating new limitations on deductible interest expense and executive compensation.

The Securities Exchange Commission staff issued Staff Accounting Bulletin (SAB) 118 which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Tax Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the Tax Act.

In connection with our initial analysis of the impact of the Tax Act, we recorded a provisional net tax benefit of $1.22 billion in the period ending December 31, 2017. The net tax benefit primarily consisted of a net tax benefit for the re-measurement of U.S. deferred taxes of $1.454 billion and an expense for the Transition Tax of $231 million. For various reasons that are discussed more fully below, as of the quarter ended June 30, 2018, we have not completed our accounting for the income tax effects of the Tax Act.

Our accounting for the following elements of the Tax Act is incomplete as of June 30, 2018. The estimates reported in the period ending December 31, 2017, were not adjusted in the period ending June 30, 2018. As of the period ended June 30, 2018, there has been no change or clarification in guidance issued or interpretations or assumptions we have made that caused a change to the estimates reported in the period ending December 31, 2017.

Reduction of U.S. federal corporate tax rate: The Tax Act reduced the corporate tax rate to 21%, effective January 1, 2018. For certain of our deferred tax assets and liabilities, we recorded a provisional net decrease of $1.451 billion with a corresponding adjustment to deferred income tax benefit in the same amount for the year ended December 31, 2017. While we are able to make a reasonable estimate of the impact of the reduction in the corporate rate, it may be affected by other analysis related to the Tax Act, including but not limited to, the state tax effect of adjustments made to federal temporary differences.

Deemed Repatriation Transition Tax: This is a tax on previously untaxed accumulated and current earnings and profits (“E&P”) of foreign subsidiaries. To determine the amount of the transition tax, we must determine, in addition to other factors, the amount of post-1986 E&P of the relevant subsidiaries, as well as the amount of non-U.S. income taxes paid on such earnings. We were able to make a reasonable estimate of the Transition Tax and recorded a provisional Transition Tax obligation of $231 million in the tax period ending December 31, 2017.

Valuation Allowances: The Company has assessed whether its U.S. state and local income tax valuation allowance analysis is affected by various aspects of the Tax Act (e.g. deemed repatriation of foreign income, acceleration of cost recovery). Since, as discussed herein, the Company has recorded provisional amounts related to elements of the Tax Act, any corresponding determination of the need for or change in a valuation allowance is also provisional. For certain of our state deferred tax assets, we recorded a net $3 million provisional decrease in the recorded valuation allowance with a corresponding adjustment to deferred income tax benefit in the same amount for the year ended December 31, 2017. While we are able to make a reasonable estimate of the impact of the Tax Act on state attributes, the resolution of, or changes from, other factors noted herein may result in changes in our recorded valuation allowance.

The Tax Act may impact decisions surrounding the Company’s permanent reinvestment assertions related to its foreign investments and could have an impact on the Company’s accounting for untaxed outside basis differences. We previously considered the earnings in our non-U.S. subsidiaries to be permanently reinvested, and, accordingly deferred income taxes were not provided for such basis differences which totaled approximately $5.9 billion at December 31, 2017. While the transition tax resulted in a reduction in these basis differences, an actual repatriation from our non-U.S. subsidiaries could still be subject to additional taxes, including, but not limited to, foreign withholding taxes and U.S. state income taxes. In light of the Tax Act, the Company is evaluating its global cash management and non-U.S. repatriation strategy but we have yet to determine whether we plan to change our prior assertion. Accordingly, we have not recorded any deferred taxes attributable to our investments in our non-U.S. subsidiaries.

These estimates may change materially due to, among other things, further clarification of existing guidance that may be issued by U.S. taxing authorities or regulatory bodies and/or changes in interpretations and assumptions we have preliminarily made. We will continue to analyze the Tax Act to finalize its financial statement impact, including the mandatory deemed repatriation of foreign earnings, re-measurement of deferred taxes and all other provisions of the legislation and will record the effects of any changes to provisional amounts in the period we can complete our analysis or are first able to make a reasonable estimate, but no later than December 2018.

Because of the complexity of the new Global Intangible Low Tax Income (GILTI) rules, we are continuing to evaluate this provision of the Act and the application of ASC 740. Under U.S. GAAP, we are allowed to make an accounting policy choice of either (1) treating taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the “period cost method”) or (2) factoring such amounts into a company’s measurement of its deferred taxes (the “deferred method”). Our selection of an accounting policy related to the new GILTI tax rules will depend, in part, on analyzing our global income to determine whether we expect to have future U.S. inclusions in taxable income related to GILTI and, if so, what the impact is expected to be. Because whether we expect to have future U.S. inclusions in taxable income related to GILTI depends on a number of different aspects of our estimated future results of global operations, we are not yet able to reasonably estimate the long-term effects of this provision of the Act. Therefore, we have not recorded any potential deferred tax effects related to GILTI in our financial statements and have not made a policy decision regarding whether to record deferred taxes on GILTI or use the period cost method. We expect to complete our accounting within the prescribed measurement period.