Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Consolidation, Policy [Policy Text Block]	Principles of ConsolidationAs of December 31, 2018, our consolidated financial statements include the accounts of (i) Icahn Enterprises and Icahn Enterprises Holdings and (ii) the wholly and majority owned subsidiaries of Icahn Enterprises and Icahn Enterprises Holdings, in addition to variable interest entities ("VIEs") in which we are the primary beneficiary. In evaluating whether we have a controlling financial interest in entities that we consolidate, we consider the following: (1) for voting interest entities, including limited partnerships and similar entities that are not VIEs, we consolidate these entities in which we own a majority of the voting interests; and (2) for VIEs, we consolidate these entities in which we are the primary beneficiary. See below for a discussion of our VIEs. Kick-out rights, which are the rights underlying the limited partners' ability to dissolve the limited partnership or otherwise remove the general partners, held through voting interests of partnerships and similar entities that are not VIEs are considered the equivalent of the equity interests of corporations that are not VIEs.
Held for sale policy [Policy Text Block]	Discontinued Operations and Held For Sale We classify assets and liabilities as held for sale when management, having the authority to approve the action, commits to a plan to sell the disposal group, the sale is probable within one year, and the disposal group is available for immediate sale in its present condition. We also consider whether an active program to locate a buyer has been initiated, whether the disposal group is marketed actively for sale at a price that is reasonable in relation to its current fair value, and whether actions required to complete the plan indicate it is unlikely significant changes to the plan will be made or the plan will be withdrawn. In accordance with U.S. GAAP, we classify operations as discontinued when they meet all the criteria to be classified as held for sale and when the sale represents a strategic shift that will have a major impact on our financial condition and results of operations.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates in Preparation of Financial StatementsThe preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the period. Due to the inherent uncertainty involved in making estimates, actual results may differ from the estimates and assumptions used in preparing the consolidated financial statements.
Reclassification, Policy [Policy Text Block]	Reclassifications In connection with our adoption of Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") No. 2016-18, Restricted Cash, as discussed below, our net cash provided by operating activities for the years ended December 31, 2017 and 2016 was decreased by $19 million and $446 million, respectively. In connection with our adoption of FASB ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, as discussed below, we decreased our selling, general and administrative costs by $4 million and $4 million and decreased other income, net by $4 million and $4 million for the years ended December 31, 2017 and 2016, respectively. Certain reclassifications have been made within the consolidated statements of operations to include gain (loss) on derivatives within cost of goods sold for our Energy segment. Prior year balances have been reclassified to conform to the current year presentation. The reclassifications of losses on derivatives from other income, net to costs of goods sold were $70 million and $19 million for the years ended December 31, 2017 and 2016, respectively. These reclassifications did not have an impact on previously reported net income. We have recasted certain historical results for discontinued operations, which we disclose in Note 13, "Discontinued Operations." In addition, certain other reclassifications from the prior year presentation have been made to conform to the current year presentation, which did not have an impact on previously reported net income and equity and are not deemed material.
Consolidation, Variable Interest Entity, Policy [Policy Text Block]	Consolidated Variable Interest Entities The following is a discussion of variable interest entities in which we are deemed to be the primary beneficiary and in which we therefore consolidate. In addition, as discussed in Note 3, "Related Party Transactions," we have a variable interest in an entity in which we are not the primary beneficiary and therefore we do not consolidate. Icahn Enterprises Holdings We determined that Icahn Enterprises Holdings is a VIE because it lacks both substantive kick-out and participating rights. Icahn Enterprises is the primary beneficiary of Icahn Enterprises Holdings principally based on its 99% limited partner interest in Icahn Enterprises Holdings and therefore continues to consolidate Icahn Enterprises Holdings. The consolidated financial statements of Icahn Enterprises Holdings are included in this Report. The balances with respect to Icahn Enterprises Holdings' consolidated VIEs are discussed below, comprising the Investment Funds, CVR Refining, CVR Partners and Viskase. Investment We determined that each of the Investment Funds are considered VIEs because these limited partnerships lack both substantive kick-out and participating rights. Because we have a general partner interest in each of the Investment Funds and have significant limited partner interests in each of the Investment Funds, coupled with our significant exposure to losses and benefits in each of the Investment Funds, we are the primary beneficiary of each of the Investment Funds and therefore continue to consolidate each of the Investment Funds. Energy CVR Refining and CVR Partners are each considered VIEs because each of these limited partnerships lack both substantive kick-out and participating rights. In addition, CVR Energy also concluded that, based upon its general partner's roles and rights in CVR Refining and CVR Partners as afforded by their respective partnership agreements, coupled with its exposure to losses and benefits in each of CVR Refining and CVR Partners through its significant limited partner interests, intercompany credit facilities and services agreements, it is the primary beneficiary of both CVR Refining and CVR Partners. Based upon this evaluation, CVR Energy continues to consolidate both CVR Refining and CVR Partners. Food Packaging Viskase holds a variable interest in a joint venture for which Viskase is the primary beneficiary. Viskase's interest in the joint venture includes a 50% equity interest and also relates to the sales, operations, administrative and financial support to the joint venture through providing many of the assets used in its business.
Business Combinations Policy [Policy Text Block]	Acquisitions of Businesses We account for business combinations under the acquisition method of accounting (other than acquisitions of businesses under common control), which requires us to recognize separately from goodwill the assets acquired and the liabilities assumed at their acquisition date fair values. While we use our best estimates and assumptions to accurately value assets acquired and liabilities assumed at the acquisition date as well as contingent consideration, where applicable, our estimates are inherently uncertain and subject to refinement. Accounting for business combinations requires us to make significant estimates and assumptions, especially at the acquisition date including our estimates for intangible assets, contractual obligations assumed, pre-acquisition contingencies, and contingent consideration, where applicable. In valuing our acquisitions, we estimate fair values based on industry data and trends and by reference to relevant market rates and transactions, and discounted cash flow valuation methods, among other factors. The discount rates used were commensurate with the inherent risks associated with each type of asset and the level and timing of cash flows appropriately reflect market participant assumptions. The primary items that generate goodwill include the value of the synergies between the acquired company and our existing businesses and the value of the acquired assembled workforce, neither of which qualifies for recognition as an intangible asset.
Common control acquisitions and dispositions [Policy Text Block]	Acquisition, Investments and Disposition of Entities under Common ControlAcquisitions or investments of entities under common control are reflected in a manner similar to pooling of interests. The general partner's capital account or non-controlling interests, as applicable, are charged or credited for the difference between the consideration we pay for the entity and the related entity's basis prior to our acquisition or investment. Net gains or losses of an acquired entity prior to its acquisition or investment date are allocated to the general partner's capital account or non-controlling interests, as applicable. In allocating gains and losses upon the sale of a previously acquired common control entity, we allocate a gain or loss for financial reporting purposes by first restoring the general partner's capital account or non-controlling interests, as applicable, for the cumulative charges or credits relating to prior periods recorded at the time of our acquisition or investment and then allocating the remaining gain or loss ("Common Control Gains or Losses") among our general partner, limited partners and non-controlling interests, as applicable, in accordance with their respective ownership percentages. In the case of acquisitions of entities under common control, such Common Control Gains or Losses are allocated in accordance with their respective partnership percentages under the Amended and Restated Agreement of Limited Partnership dated as of May 12, 1987, as amended from time to time (together with the partnership agreement of Icahn Enterprises Holdings, the “Partnership Agreement”) (i.e., 98.01% to the limited partners and 1.99% to the general partner).
Statement of cash flow, policy [Policy Text Block]	Cash FlowCash and cash equivalents and restricted cash and restricted cash equivalents in our consolidated statements of cash flows is comprised of (i) cash and cash equivalents and (ii) cash held at consolidated affiliated partnerships and restricted cash.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash EquivalentsWe consider short-term investments, which are highly liquid with original maturities of three months or less at date of purchase, to be cash equivalents.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Held at Consolidated Affiliated Partnerships and Restricted Cash Our cash held at consolidated affiliated partnerships balance was $2,648 million and $192 million as of December 31, 2018 and December 31, 2017, respectively. Cash held at consolidated affiliated partnerships relates to our Investment segment and consists of cash and cash equivalents held by the Investment Funds that, although not legally restricted, is not available to fund the general liquidity needs of the Investment segment or Icahn Enterprises. Our restricted cash balance was $34 million and $555 million as of December 31, 2018 and December 31, 2017, respectively. Restricted cash includes, but is not limited to, our Investment segment's cash pledged and held for margin requirements on derivative transactions.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value Option for Financial Assets and Financial LiabilitiesThe fair value option gives entities the option to measure eligible financial assets, financial liabilities and firm commitments at fair value (i.e., the fair value option), on an instrument-by-instrument basis, that are otherwise not permitted to be accounted for at fair value pursuant to the provisions of FASB Accounting Standards Codification ("ASC") Topic 825, Financial Instruments. The election to use the fair value option is available when an entity first recognizes a financial asset or financial liability or upon entering into a firm commitment. Subsequent changes in fair value must be recorded in earnings. In estimating the fair value for financial instruments for which the fair value option has been elected, we use the valuation methodologies in accordance to where the financial instruments are classified within the fair value hierarchy as discussed in Note 5, “Fair Value Measurements.” For our Investment segment, we apply the fair value option to our investments that would otherwise be accounted under the equity method.
Derivatives, Policy [Policy Text Block]	DerivativesFrom time to time, our subsidiaries enter into derivative contracts, including purchased and written option contracts, swap contracts, futures contracts and forward contracts. U.S. GAAP requires recognition of all derivatives as either assets or liabilities in the balance sheet at their fair value. The accounting for changes in fair value depends on the intended use of the derivative and its resulting designation. For those derivative instruments that are designated and qualify as hedging instruments, a company must designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge or a hedge of a net investment in a foreign operation. Gains and losses related to a hedge are either recognized in income immediately to offset the gain or loss on the hedged item or are deferred and reported as a component of accumulated other comprehensive loss and subsequently recognized in earnings when the hedged item affects earnings. The change in fair value of the ineffective portion of a financial instrument, determined using the hypothetical derivative method, is recognized in earnings immediately. The gain or loss related to financial instruments that are not designated as hedges are recognized immediately in earnings. Cash flows related to hedging activities are included in the operating section of the consolidated statements of cash flows. For further information regarding our derivative contracts, see Note 6, “Financial Instruments
Trade and Other Accounts Receivable, Policy [Policy Text Block]	Accounts Receivable, NetAccounts receivable, net consists of trade receivables from customers, including contract assets when we have an unconditional right to receive consideration. An allowance for doubtful accounts is determined through analysis of the aging of accounts receivable at the date of the consolidated financial statements, assessments of collectability based on an evaluation of historic and anticipated trends, the financial condition of our customers, and an evaluation of the impact of economic conditions. Our allowance for doubtful accounts is an estimate based on specifically identified accounts as well as general reserves based on historical experience.
Property, Plant and Equipment, Policy [Policy Text Block]	Long-Lived Assets Long-lived assets such as property, plant, and equipment, and definite-lived intangible assets are recorded at cost or fair value established at acquisition, less accumulated depreciation or amortization, unless the expected future use of the assets indicate a lower value is appropriate. Long-lived asset groups are evaluated for impairment when impairment indicators exist. If the carrying value of a long-lived asset group is impaired, an impairment charge is recorded for the amount by which the carrying value of the long-lived asset group exceeds its fair value. Depreciation and amortization are computed principally by the straight-line method for financial reporting purposes. Land and construction in progress are stated at the lower of cost or net realizable value. Interest is capitalized on expenditures for long-term projects until a salable or ready-for-use condition is reached. The interest capitalization rate is based on the interest rate on specific borrowings to fund the projects.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Indefinite-Lived Intangible AssetsGoodwill and indefinite-lived intangible assets primarily include trademarks and brand names acquired in acquisitions. For a complete discussion of the impairment of goodwill and indefinite-lived intangible assets related to our various segments, see Note 8, “Goodwill and Intangible Assets, Net.”
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Goodwill Goodwill is determined as the excess of fair value over amounts attributable to specific tangible and intangible assets. Goodwill is reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a reporting unit’s carrying value exceeds its fair value. When performing the goodwill impairment testing, a reporting units’ fair value is based on valuation techniques using the best available information, primarily discounted cash flows projections, guideline transaction multiples, and multiples of current and future earnings. The impairment charge, if any, is the excess of the tested reporting unit's carrying value over its fair value, limited to the total amount of goodwill allocated to the tested reporting unit. Indefinite-Lived Intangible Assets Indefinite-lived intangible assets are stated at fair value established at acquisition or cost. These indefinite-lived intangible assets are reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a trademark or brand names' carrying value exceeds its fair value. The fair values of these assets are based upon the prospective stream of hypothetical after-tax royalty cost savings discounted at rates that reflect the rates of return appropriate for these intangible assets. The impairment charge, if any, is the excess of the assets carrying value over its fair value.
Pension and Other Postretirement Plans, Policy [Policy Text Block]	Pension and Other Post-Retirement Benefit Plan Obligations Post-retirement benefit liabilities were $77 million and $80 million as of December 31, 2018 and 2017, respectively, and are included in accrued expenses and other liabilities in our consolidated balance sheets. Appropriate actuarial methods and assumptions are used in accounting for defined benefit pension plans and other post-retirement benefit plans. These assumptions include long-term rate of return on plan assets, discount rates and other factors. Actual results that differ from the assumptions used are accumulated and amortized over future periods. Therefore, assumptions used to calculate benefit obligations as of the end of the year directly impact the expense to be recognized in future periods. The measurement date for all defined benefit plans is December 31 of each year.
General partnership policy [Policy Text Block]	General Partnership Interest of Icahn Enterprises and Icahn Enterprises Holdings The general partner's capital account generally consists of its cumulative share of our net income less cash distributions plus capital contributions. Additionally, in acquisitions of common control companies accounted for at historical cost similar to a pooling of interests, the general partner's capital account would be charged (or credited) in a manner similar to a distribution (or contribution) for the excess (or deficit) of the fair value of consideration paid over historical basis in the business acquired. Capital Accounts, as defined under the Partnership Agreement, are maintained for our general partner and our limited partners. The capital account provisions of our Partnership Agreement incorporate principles established for U.S. federal income tax purposes and are not comparable to the equity accounts reflected under U.S. GAAP in our consolidated financial statements. Under our Partnership Agreement, the general partner is required to make additional capital contributions to us upon the issuance of any additional depositary units in order to maintain a capital account balance equal to 1.99% (1% in the case of Icahn Enterprises Holdings) of the total capital accounts of all partners. Generally, net earnings for U.S. federal income tax purposes are allocated 1.99% (1% in the case of Icahn Enterprises Holdings) and 98.01% (99% in the case of Icahn Enterprises Holdings) between the general partner and the limited partners, respectively, in the same proportion as aggregate cash distributions made to the general partner and the limited partners during the period. This is generally consistent with the manner of allocating net income under our Partnership Agreement; however, it is not comparable to the allocation of net income reflected in our consolidated financial statements. Pursuant to the Partnership Agreement, in the event of our dissolution, after satisfying our liabilities, our remaining assets would be divided among our limited partners and the general partner in accordance with their respective percentage interests under the Partnership Agreement. If a deficit balance still remains in the general partner's capital account after all allocations are made between the partners, the general partner would not be required to make whole any such deficit.
Earnings Per Share, Policy [Policy Text Block]	Basic and Diluted Income Per LP Unit For Icahn Enterprises, basic income (loss) per LP unit is based on net income or loss attributable to Icahn Enterprises allocated to limited partners. Net income or loss allocated to limited partners is divided by the weighted-average number of LP units outstanding. Diluted income (loss) per LP unit, when applicable, is based on basic income (loss) adjusted for the potential effect of dilutive securities as well as the related weighted-average number of units and equivalent units outstanding. For accounting purposes, when applicable, earnings prior to dates of acquisitions of entities under common control are excluded from the computation of basic and diluted income per LP unit as such earnings are allocated to our general partner.
Income Tax, Policy [Policy Text Block]	Income Taxes Except as described below, no provision has been made for federal, state, local or foreign income taxes on the results of operations generated by partnership activities, as such taxes are the responsibility of the partners. Provision has been made for federal, state, local or foreign income taxes on the results of operations generated by our corporate subsidiaries and these are reflected within continuing and discontinued operations. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are limited to amounts considered to be realizable in future periods. A valuation allowance is recorded against deferred tax assets if management does not believe that we have met the “more-likely-than-not” standard to allow recognition of such an asset. U.S. GAAP provides that the tax effects from an uncertain tax position can be recognized in the financial statements only if the position is “more-likely-than-not” to be sustained if the position were to be challenged by a taxing authority. The assessment of the tax position is based solely on the technical merits of the position, without regard to the likelihood that the tax position may be challenged. If an uncertain tax position meets the “more-likely-than-not” threshold, the largest amount of tax benefit that is greater than 50 percent likely to be recognized upon ultimate settlement with the taxing authority is recorded. See Note 14, “Income Taxes,” for additional information.
Environmental Costs, Policy [Policy Text Block]	Environmental Liabilities We recognize environmental liabilities when a loss is probable and reasonably estimable. Estimates of these costs are based upon currently available facts, internal and third-party assessments of contamination, available remediation technology, site-specific costs, and currently enacted laws and regulations. In reporting environmental liabilities, no offset is made for potential recoveries. Loss contingency accruals, including those for environmental remediation, are subject to revision as further information develops or circumstances change, and such accruals can take into account the legal liability of other parties. Environmental expenditures are capitalized at the time of the expenditure when such costs provide future economic benefits.
Commitments and Contingencies, Policy [Policy Text Block]	LitigationOn an ongoing basis, we assess the potential liabilities related to any lawsuits or claims brought against us. While it is typically very difficult to determine the timing and ultimate outcome of such actions, we use our best judgment to determine if it is probable that we will incur an expense related to the settlement or final adjudication of such matters and whether a reasonable estimation of such probable loss, if any, can be made. In assessing probable losses, we make estimates of the amount of insurance recoveries, if any. We accrue a liability when we believe a loss is probable and the amount of loss can be reasonably estimated. Due to the inherent uncertainties related to the eventual outcome of litigation and potential insurance recovery, it is possible that certain matters may be resolved for amounts materially different from any provisions or disclosures that we have previously made.
New Accounting Pronouncements, Policy [Policy Text Block]	Adoption of New Accounting Standards Revenue Accounting Standards Updates In May 2014, the FASB issued ASU No. 2014-09, creating a new topic, FASB ASC Topic 606, Revenue from Contracts with Customers, superseding revenue recognition requirements in FASB ASC Topic 605, Revenue Recognition. This ASU requires that an entity recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In addition, an entity is required to disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU was amended by ASU No. 2015-14, issued in August 2015, which deferred the original effective date by one year; the effective date of this ASU is for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, using one of two retrospective application methods. In addition, the FASB issued other amendments during 2016 and 2017 to FASB ASC Topic 606 that include implementation guidance to principal versus agent considerations, guidance to identifying performance obligations and licensing guidance and other narrow scope improvements. We adopted these new standards on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The standard has been applied to all contracts at the date of initial application. No adjustment to revenue for periods prior to adoption were required. We have not identified any material differences in our revenue recognition methods that required modification under the new standards. Additionally, our internal control framework did not materially change as a result of the adoption of these new standards. The impact of adopting these new standards on our consolidated financial statements is a cumulative effect adjustment to decrease our equity attributable to Icahn Enterprises and Icahn Enterprises Holdings as of January 1, 2018 by $29 million, primarily relating to our Automotive segment. As of January 1, 2018, our Energy segment increased each of accounts receivable, net and accrued expenses and other liabilities by $21 million for customer prepayments prior to delivery and to gross up certain fees collected from customers to reflect a receivable and deferred revenue recorded at the point in time in which a prepaid contract is legally enforceable and the associated right to consideration is unconditional. Previously, deferred revenue was recorded by our Energy segment upon customer prepayment. As of January 1, 2018, our Automotive segment increased accrued expenses and other liabilities by $42 million and decreased deferred tax liabilities by $10 million for certain extended warranties to reflect the revenues from these plans as deferred revenue. Previously, revenues from these plans were recognized upfront. Our Automotive segment also recognizes revenue from the sale of goods on a drop ship basis. Previously, revenues from these transactions were recognized gross. For the year ended December 31, 2018, net sales and cost of goods sold would have been higher by $62 million and $62 million, respectively, under prior accounting principles. In addition to the above, we increased assets by an aggregate of $32 million and increased liabilities by $29 million as of January 1, 2018, primarily with respect to Federal-Mogul's asset and liabilities classified as held for sale. For the year ended December 31, 2018, the impact on revenues would have been immaterial under prior accounting principles. Other Accounting Standards Updates In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall, which amends FASB ASC Topic 825, Financial Instruments. This ASU requires that equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes recognized in earnings. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment. In addition, there were other amendments to certain disclosure and presentation matters pertaining to financial instruments, including the requirement of an entity to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. We adopted this new standard on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The amendments related to equity securities without readily determinable fair values were applied prospectively to equity investments that existed as of the date of adoption. The adoption of this standard did not have a material impact on our consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU seeks to reduce the diversity currently in practice by providing guidance on the presentation of eight specific cash flow issues in the statement of cash flows. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The adoption of this standard did not have a material impact on our consolidated statements of cash flows. In November 2016, the FASB issued ASU No. 2016-18, Restricted Cash, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU requires that the statement of cash flows explain the change during the period total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We have adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications." In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which amends FASB ASC Topic 715, Compensation - Retirement Benefits. This ASU requires entities to present the service cost component of net periodic benefit cost in the same line item or items in the financial statements as other compensation costs arising from services rendered by the pertinent employees during the period. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications." In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, which amends FASB ASC Topic 718, Compensation - Stock Compensation. This ASU provides updated guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 which has been applied prospectively and which did not have a material impact on our consolidated financial statements.
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	Recently Issued Accounting Standards In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which supersedes FASB ASC Topic 840, Leases. This ASU requires the recognition of right-of-use assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. In addition, among other changes to the accounting for leases, this ASU retains the distinction between finance leases and operating leases. The classification criteria for distinguishing between finance leases and operating leases are substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the previous guidance. Furthermore, quantification and qualitative disclosures, including disclosures regarding significant judgments made by management, will be required. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The amendments in this ASU should be applied using a modified retrospective approach. Early application is permitted. In addition, in July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842), which provides an additional (and optional) transition method to adopt the new leases standard. We have developed an implementation plan to adopt the new leases standard using the new transition method option effective January 1, 2019, which will require adopting the new leases standard at the adoption date and recognizing a cumulative-effect adjustment to the opening balance of equity in the period of adoption instead of the earliest period presented. In addition, prior period presentation and disclosure will not be adjusted after adoption. The most significant impact will relate to the recognition of right-of-use assets and lease liabilities on our consolidated balance sheets for long-term operating leases with the significant majority of the impact within our Automotive segment. Our Automotive segment has identified approximately 2,300 leases, primarily for real estate, and estimates recognizing right-of-use assets of $639 million and related liabilities of $674 million as of January 1, 2019. Our Energy segment estimates recognizing right-of-use assets and liabilities of $53 million, in addition to the recognition of finance lease assets and obligations of $26 million, as of January 1, 2019. The aggregate impact of all other segments is not material. In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments, which amends FASB ASC Topic 326, Financial Instruments - Credit Losses. This ASU requires financial assets measured at amortized cost to be presented at the net amount to be collected and broadens the information, including forecasted information incorporating more timely information, that an entity must consider in developing its expected credit loss estimate for assets measured. This ASU is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early application is permitted for fiscal years beginning after December 15, 2018. We are currently evaluating the impact of this standard on our consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which amends FASB ASC Topic 815, Derivatives and Hedging. This ASU includes amendments to existing guidance to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which amends FASB ASC Topic 220, Income Statement - Reporting Comprehensive Income. This ASU allows a reclassification out of accumulated other comprehensive loss within equity for standard tax effects resulting from the Tax Cuts and Jobs Act and consequently, eliminates the stranded tax effects resulting from the Tax Cuts and Jobs Act. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurements, which amends FASB ASC Topic 820, Fair Value Measurements. This ASU eliminates, modifies and adds various disclosure requirements on fair value measurements. This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Certain disclosures are required to be applied using a retrospective approach and others using a prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract, which amends FASB ASC Subtopic 350-40, Intangibles-Goodwill and Other-Internal-Use Software. This ASU adds certain disclosure requirements related to implementation costs incurred for internal-use software and cloud computing arrangements. The amendment aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The amendments in this ASU should be applied either using a retrospective or prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.
Investment Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Investment, Policy [Policy Text Block]	Investment Investment Transactions and Related Investment Income (Loss). Investment transactions of the Investment Funds are recorded on a trade date basis. Realized gains or losses on sales of investments are based on the first-in, first-out or the specific identification method. Realized and unrealized gains or losses on investments are recorded in the consolidated statements of operations. Interest income and expenses are recorded on an accrual basis and dividends are recorded on the ex-dividend date. Premiums and discounts on fixed income securities are amortized using the effective yield method. Investments held by the Investment segment are carried at fair value. Our Investment segment applies the fair value option to those investments that are otherwise subject to the equity method. Valuation of Investments. Securities of the Investment Funds that are listed on a securities exchange are valued at their last sales price on the primary securities exchange on which such securities are traded on such date. Securities that are not listed on any exchange but are traded over-the-counter are valued at the mean between the last “bid” and “ask” price for such security on such date. Securities and other instruments for which market quotes are not readily available are valued at fair value as determined in good faith by the Investment Funds.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Transactions. The books and records of the Investment Funds are maintained in U.S. dollars. Assets and liabilities denominated in currencies other than U.S. dollars are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Transactions during the period denominated in currencies other than U.S. dollars are translated at the rate of exchange applicable on the date of the transaction. Foreign currency translation gains and losses are recorded in the consolidated statements of operations. The Investment Funds do not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in the market prices of securities. Such fluctuations are reflected in net gain (loss) from investment activities in the consolidated statements of operations.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Values of Financial Instruments. The fair values of the Investment Funds' assets and liabilities that qualify as financial instruments under applicable U.S. GAAP approximate the carrying amounts presented in the consolidated balance sheets.
Securities sold, not yet purchased [Policy Text Block]	Securities Sold, Not Yet Purchased. The Investment Funds may sell an investment they do not own in anticipation of a decline in the fair value of that investment. When the Investment Funds sell an investment short, they must borrow the investment sold short and deliver it to the broker-dealer through which they made the short sale. A gain, limited to the price at which the Investment Funds sold the investment short, or a loss, unlimited in amount, will be recognized upon the cover of the short sale.
Due to and from Broker [Policy Text Block]	Due From Brokers. Due from brokers represents cash balances with the Investment Funds' clearing brokers. These funds as well as fully-paid for and marginable securities are essentially restricted to the extent that they serve as collateral against securities sold, not yet purchased. Due from brokers may also include unrestricted balances with derivative counterparties. Due To Brokers. Due to brokers represents margin debit balances collateralized by certain of the Investment Funds' investments in securities.
Allocation of profits and losses in consolidated affiliated partnerships [Policy Text Block]	Allocation of Net Profits and Losses in Consolidated Affiliated Partnerships Net investment income and net realized and unrealized gains and losses on investments of the Investment Funds are allocated to the respective partners of the Investment Funds based on their percentage ownership in such Investment Funds on a monthly basis. Except for our limited partner interest, such allocations made to the limited partners of the Investment Funds are represented as non-controlling interests in our consolidated statements of operations.
Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	EnergyOur Energy segment inventories consist primarily of domestic and foreign crude oil, blending stock and components, work in progress, fertilizer products, and refined fuels and by-products. Inventories are valued at the lower of FIFO cost, or net realizable value for fertilizer products, refined fuels and by-products for all periods presented. Refinery unfinished and finished products inventory values were determined using the ability-to-bear process, whereby raw materials and production costs are allocated to work-in-process and finished goods based on their relative fair values. Other inventories, including other raw materials, spare parts and supplies, are valued at the lower of moving-average cost, which approximates FIFO, or net realizable value. The cost of inventories includes inbound freight costs.
Property, Plant and Equipment, Planned Major Maintenance Activities, Policy [Policy Text Block]	Energy The direct-expense method of accounting is used for planned major maintenance activities. Maintenance costs are recognized as expense when maintenance services are performed. Planned major maintenance activities for CVR Energy's nitrogen plant generally occur every two to three years. The required frequency of planned major maintenance activities varies by unit for the refineries, but generally is every four to five years. For the years ended December 31, 2018, 2017, and 2016, our Energy segment recorded an aggregate of $10 million, $83 million and $38 million, respectively, in turnaround expenses related to its refineries and nitrogen fertilizer plants.
Revenue Recognition, Policy [Policy Text Block]	Energy Revenue: Our Energy segment revenues from the sale of petroleum products are recorded upon delivery of the products to customers, which is the point at which title is transferred and the customer has assumed the risk of loss. This generally takes place as product passes into the pipeline, as a product transfer order occurs within a pipeline system, or as product enters equipment or locations supplied or designated by the customer. For our Energy segment's nitrogen fertilizer products sold, revenues are recorded at the point in time at which the customer obtains control of the product, which is generally upon delivery and acceptance by the customer. Nitrogen fertilizer products are sold on a wholesale basis under a contract or by purchase order. Excise and other taxes collected from customers and remitted to governmental authorities by our Energy segment are not included in reported revenues. The petroleum business' contracts with its customers state the terms of the sale, including the description, quantity, and price of each product sold. Depending on the product sold, payment from customers is generally due in full within 2 to 30 days of product delivery or invoice date. Many of the petroleum business' contracts have index-based pricing which is considered variable consideration that should be estimated in determining the transaction price. Our Energy segment determined that it does not need to estimate the variable consideration because the uncertainty related to the consideration is resolved on the pricing date or the date when the product is delivered. The nitrogen fertilizer business has an immaterial amount of variable consideration for contracts with an original duration of less than a year. A small portion of the nitrogen fertilizer partnership's revenue includes contracts extending beyond one year and contain variable pricing in which the majority of the variability is attributed to the market-based pricing. The nitrogen fertilizer business' contracts do not contain a significant financing component.
Shipping and Handling Cost, Policy [Policy Text Block]	EnergyShipping Costs: Our Energy segment's pass-through finished goods delivery costs reimbursed by customers are reported in net sales, while an offsetting expense is included in cost of goods sold.
Automotive Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	AutomotiveRevenue: Our Automotive segment recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Our Automotive segment revenue from retail and commercial parts sales is measured based on consideration specified in a contract with a customer and excludes any sales incentives and amounts collected on behalf of third parties. Automotive service revenues are recognized on completion of the service and consist of products and the labor charged for installing products or maintaining or repairing vehicles. Automotive services labor revenues are included in other revenues from operations in our consolidated statements of operations, however, the sale of any installed parts or materials related to automotive services are included in net sales. Our Automotive segment recognizes revenues from extended warranties offered to its customers on tires its sells, including lifetime warranties for road hazard assistance (recognized over 3 years) and 1-year, 3-year and lifetime plans for alignments (recognized over 1 year, 3 years and 5 years, respectively), for which it receives payment upfront. Revenues from extended warranties are recognized over the term of the warranty contract with the satisfaction of its performance obligations measured using the output method. Our Automotive segment recognizes revenues from franchise fees, which it receives payment upfront, and franchise royalties, for which it receives payment over time. Revenues from upfront franchise fees are recognized at the time the store opens, as that is when our Automotive segment's performance obligations are deemed complete, and revenues from franchise royalties are recognized in the period in which royalties are earned, generally based on a percentage of franchise sales.
Shipping and Handling Cost, Policy [Policy Text Block]	Automotive Shipping Costs: Our Automotive segment recognizes shipping and handling costs as incurred and is included in selling, general and administrative in the consolidated statements of operations for its commercial and retail parts businesses.
Food Packaging Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	Food PackagingOur Food Packaging segment revenues are recognized at the time products are shipped to the customer, under F.O.B. shipping point or F.O.B. port terms, which is the point at which title is transferred, the customer has the assumed risk of loss, and payment has been received or collection is reasonably assumed. Revenues are net of discounts, rebates and allowances. Viskase records all labor, raw materials, in-bound freight, plant receiving and purchasing, warehousing, handling and distribution costs as a component of costs of goods sold.
Metals Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	MetalsOur Metals segment inventories are stated at the lower of cost or market. Cost is determined using the average cost method. The production and accounting process utilized by our Metals segment to record recycled metals inventory quantities relies on significant estimates. Our Metals segment relies upon perpetual inventory records that utilize estimated recoveries and yields that are based upon historical trends and periodic tests for certain unprocessed metal commodities. Over time, these estimates are reasonably good indicators of what is ultimately produced; however, actual recoveries and yields can vary depending on product quality, moisture content and source of the unprocessed metal. To assist in validating the reasonableness of the estimates, our Metals segment performs periodic physical inventories which involve the use of estimation techniques. Physical inventories may detect significant variations in volume, but because of variations in product density and production processes utilized to manufacture the product, physical inventories will not generally detect smaller variations. To help mitigate this risk, our Metals segment adjusts its physical inventories when the volume of a commodity is low and a physical inventory can more accurately estimate the remaining volume.
Revenue Recognition, Policy [Policy Text Block]	MetalsOur Metals segment's primary source of revenue is from the sale of processed ferrous scrap metal, non-ferrous scrap metals, steel pipe and steel plate. PSC Metals also generates revenues from sales of secondary plate and pipe, the brokering of scrap metals and from services performed. All sales are recognized when title passes to the customer. Revenues from services are recognized as the service is performed. Sales adjustments related to price and weight differences are reflected as a reduction of revenues when settled.
Real Estate Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition: Revenue from real estate sales and related costs are recognized at the time of closing primarily by specific identification. Substantially all of the property comprising our net lease portfolio is leased to others under long-term net leases and we account for these leases in accordance with applicable U.S. GAAP. We account for our leases as follows: (i) under the financing method, (x) minimum lease payments to be received plus the estimated value of the property at the end of the lease are considered the gross investment in the lease and (y) unearned income, representing the difference between gross investment and actual cost of the leased property, is amortized to income over the lease term so as to produce a constant periodic rate of return on the net investment in the lease; and (ii) under the operating method, revenue is recognized as rentals become due, and expenses (including depreciation) are charged to operations as incurred.
Home Fashion Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	Home FashionOur Home Fashion segment records revenue upon delivery and when title is transferred and the customer has assumed the risk of loss. Unless otherwise agreed in writing, title and risk of loss pass from WPH to the customer when WPH delivers the merchandise to the designated point of delivery, to the designated point of destination or to the designated carrier, free on board. Provisions for certain rebates, sales incentives, product returns and discounts to customers are recorded in the same period the related revenue is recorded.
Revenue Recognition, Incentives [Policy Text Block]	Home FashionOur Home Fashion segment records revenue upon delivery and when title is transferred and the customer has assumed the risk of loss. Unless otherwise agreed in writing, title and risk of loss pass from WPH to the customer when WPH delivers the merchandise to the designated point of delivery, to the designated point of destination or to the designated carrier, free on board. Provisions for certain rebates, sales incentives, product returns and discounts to customers are recorded in the same period the related revenue is recorded.
Mining Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	MiningOur Mining segment inventories are valued at the lower of cost or market. Cost includes all costs incurred in the normal course of business in bringing each product to its present location and condition, including direct materials and direct labor costs, and an allocation of production overheads based on normal production capacity. Cost is calculated using weighted average unit cost.
Mining exploration and evaluation expenditures, Policy [Policy Text Block]	Mining The costs of acquiring mineral reserves and resources for our Mining segment are capitalized in the consolidated balance sheets as incurred. Capitalized mineral reserves and mine development expenditures are, upon commencement of commercial production, depreciated using a unit of production method based on the estimated economically recoverable reserves to which they relate, or are written off if abandoned. Exploration and evaluation expenditures relate to costs incurred in the exploration and evaluation of potential mineral reserves and include costs such as exploratory drilling, sample testing and the costs of feasibility studies. For our Mining segment, exploration and evaluation expenditures other than that acquired through the purchase of another mining company, are expensed as incurred. Purchased exploration and evaluation assets are recognized as assets at their cost of acquisition or at fair value if purchased as part of a business combination. Expenditures are transferred to mine development assets once the work completed supports the future development of the property, provided that technical feasibility and commercial viability studies have been successfully completed.
Revenue Recognition, Policy [Policy Text Block]	MiningOur Mining segment recognizes revenue when title, ownership, and risk of loss pass to the customer, all of which occur upon shipment or delivery of the product and is based on the applicable shipping terms. Revenue is measured at the fair value of the consideration received or receivable, with any adjustments as a result of provisional pricing recorded against revenue.
Other Segments and Holding Company
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Equity Method Investments [Policy Text Block]	Except for our Investment segment, for equity investments in which we own 50% or less but greater than 20%, we generally account for such investments using the equity method. All other equity investments are accounted for at fair value.
Investment, Policy [Policy Text Block]	Other Segments and Holding CompanyInvestments in equity and debt securities are carried at fair value with the unrealized gains or losses reflected in the consolidated statements of operations. For purposes of determining gains and losses, the cost of securities is based on specific identification. Dividend income is recorded when declared and interest income is recognized when earned.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency TranslationExchange adjustments related to international currency transactions and translation adjustments for international subsidiaries whose functional currency is the U.S. dollar (principally those located in highly inflationary economies) are reflected in the consolidated statements of operations. Translation adjustments of international subsidiaries for which the local currency is the functional currency are reflected in the consolidated balance sheets as a component of accumulated other comprehensive income. Deferred taxes are not provided on translation adjustments, other than for intercompany loans not designated as permanently reinvested, as the earnings of the subsidiaries are considered to be permanently reinvested.
Automotive, Food Packaging and Home Fashion Segments
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	Automotive, Food Packaging, and Home FashionOur Automotive, Food Packaging and Home Fashion segment inventories are stated at the lower of cost or market. Cost is determined by using the first-in, first-out basis method ("FIFO"), except for our Automotive segment, which also utilizes weighted-average cost and the last-in, first-out method for certain of its subsidiaries. Inventory recorded using the last-in, first-out method was $846 million and $900 million as of December 31, 2018 and 2017, respectively, all of which relates to finished goods. The cost of manufactured goods includes the cost of direct materials, labor and manufacturing overhead. Our Automotive, Food Packaging and Home Fashion segments reserve for estimated excess, slow-moving and obsolete inventory as well as inventory whose carrying value is in excess of net realizable value.

Basis of Presentation and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Consolidation, Policy [Policy Text Block]

Principles of ConsolidationAs of December 31, 2018, our consolidated financial statements include the accounts of (i) Icahn Enterprises and Icahn Enterprises Holdings and (ii) the wholly and majority owned subsidiaries of Icahn Enterprises and Icahn Enterprises Holdings, in addition to variable interest entities ("VIEs") in which we are the primary beneficiary. In evaluating whether we have a controlling financial interest in entities that we consolidate, we consider the following: (1) for voting interest entities, including limited partnerships and similar entities that are not VIEs, we consolidate these entities in which we own a majority of the voting interests; and (2) for VIEs, we consolidate these entities in which we are the primary beneficiary. See below for a discussion of our VIEs. Kick-out rights, which are the rights underlying the limited partners' ability to dissolve the limited partnership or otherwise remove the general partners, held through voting interests of partnerships and similar entities that are not VIEs are considered the equivalent of the equity interests of corporations that are not VIEs.

Held for sale policy [Policy Text Block]

Discontinued Operations and Held For Sale

We classify assets and liabilities as held for sale when management, having the authority to approve the action, commits to a plan to sell the disposal group, the sale is probable within one year, and the disposal group is available for immediate sale in its present condition. We also consider whether an active program to locate a buyer has been initiated, whether the disposal group is marketed actively for sale at a price that is reasonable in relation to its current fair value, and whether actions required to complete the plan indicate it is unlikely significant changes to the plan will be made or the plan will be withdrawn.

In accordance with U.S. GAAP, we classify operations as discontinued when they meet all the criteria to be classified as held for sale and when the sale represents a strategic shift that will have a major impact on our financial condition and results of operations.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates in Preparation of Financial StatementsThe preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the period. Due to the inherent uncertainty involved in making estimates, actual results may differ from the estimates and assumptions used in preparing the consolidated financial statements.

Reclassification, Policy [Policy Text Block]

Reclassifications

In connection with our adoption of Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") No. 2016-18, Restricted Cash, as discussed below, our net cash provided by operating activities for the years ended December 31, 2017 and 2016 was decreased by $19 million and $446 million, respectively.

In connection with our adoption of FASB ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, as discussed below, we decreased our selling, general and administrative costs by $4 million and $4 million and decreased other income, net by $4 million and $4 million for the years ended December 31, 2017 and 2016, respectively.

Certain reclassifications have been made within the consolidated statements of operations to include gain (loss) on derivatives within cost of goods sold for our Energy segment. Prior year balances have been reclassified to conform to the current year presentation. The reclassifications of losses on derivatives from other income, net to costs of goods sold were $70 million and $19 million for the years ended December 31, 2017 and 2016, respectively. These reclassifications did not have an impact on previously reported net income.

We have recasted certain historical results for discontinued operations, which we disclose in Note 13, "Discontinued Operations." In addition, certain other reclassifications from the prior year presentation have been made to conform to the current year presentation, which did not have an impact on previously reported net income and equity and are not deemed material.

Consolidation, Variable Interest Entity, Policy [Policy Text Block]

Consolidated Variable Interest Entities

The following is a discussion of variable interest entities in which we are deemed to be the primary beneficiary and in which we therefore consolidate. In addition, as discussed in Note 3, "Related Party Transactions," we have a variable interest in an entity in which we are not the primary beneficiary and therefore we do not consolidate.

Icahn Enterprises Holdings

We determined that Icahn Enterprises Holdings is a VIE because it lacks both substantive kick-out and participating rights. Icahn Enterprises is the primary beneficiary of Icahn Enterprises Holdings principally based on its 99% limited partner interest in Icahn Enterprises Holdings and therefore continues to consolidate Icahn Enterprises Holdings. The consolidated financial statements of Icahn Enterprises Holdings are included in this Report. The balances with respect to Icahn Enterprises Holdings' consolidated VIEs are discussed below, comprising the Investment Funds, CVR Refining, CVR Partners and Viskase.

Investment

We determined that each of the Investment Funds are considered VIEs because these limited partnerships lack both substantive kick-out and participating rights. Because we have a general partner interest in each of the Investment Funds and have significant limited partner interests in each of the Investment Funds, coupled with our significant exposure to losses and benefits in each of the Investment Funds, we are the primary beneficiary of each of the Investment Funds and therefore continue to consolidate each of the Investment Funds.

Energy

CVR Refining and CVR Partners are each considered VIEs because each of these limited partnerships lack both substantive kick-out and participating rights. In addition, CVR Energy also concluded that, based upon its general partner's roles and rights in CVR Refining and CVR Partners as afforded by their respective partnership agreements, coupled with its exposure to losses and benefits in each of CVR Refining and CVR Partners through its significant limited partner interests, intercompany credit facilities and services agreements, it is the primary beneficiary of both CVR Refining and CVR Partners. Based upon this evaluation, CVR Energy continues to consolidate both CVR Refining and CVR Partners.

Food Packaging

Viskase holds a variable interest in a joint venture for which Viskase is the primary beneficiary. Viskase's interest in the joint venture includes a 50% equity interest and also relates to the sales, operations, administrative and financial support to the joint venture through providing many of the assets used in its business.

Business Combinations Policy [Policy Text Block]

Acquisitions of Businesses

We account for business combinations under the acquisition method of accounting (other than acquisitions of businesses under common control), which requires us to recognize separately from goodwill the assets acquired and the liabilities assumed at their acquisition date fair values. While we use our best estimates and assumptions to accurately value assets acquired and liabilities assumed at the acquisition date as well as contingent consideration, where applicable, our estimates are inherently uncertain and subject to refinement.

Accounting for business combinations requires us to make significant estimates and assumptions, especially at the acquisition date including our estimates for intangible assets, contractual obligations assumed, pre-acquisition contingencies, and contingent consideration, where applicable. In valuing our acquisitions, we estimate fair values based on industry data and trends and by reference to relevant market rates and transactions, and discounted cash flow valuation methods, among other factors. The discount rates used were commensurate with the inherent risks associated with each type of asset and the level and timing of cash flows appropriately reflect market participant assumptions. The primary items that generate goodwill include the value of the synergies between the acquired company and our existing businesses and the value of the acquired assembled workforce, neither of which qualifies for recognition as an intangible asset.

Common control acquisitions and dispositions [Policy Text Block]

Acquisition, Investments and Disposition of Entities under Common ControlAcquisitions or investments of entities under common control are reflected in a manner similar to pooling of interests. The general partner's capital account or non-controlling interests, as applicable, are charged or credited for the difference between the consideration we pay for the entity and the related entity's basis prior to our acquisition or investment. Net gains or losses of an acquired entity prior to its acquisition or investment date are allocated to the general partner's capital account or non-controlling interests, as applicable. In allocating gains and losses upon the sale of a previously acquired common control entity, we allocate a gain or loss for financial reporting purposes by first restoring the general partner's capital account or non-controlling interests, as applicable, for the cumulative charges or credits relating to prior periods recorded at the time of our acquisition or investment and then allocating the remaining gain or loss ("Common Control Gains or Losses") among our general partner, limited partners and non-controlling interests, as applicable, in accordance with their respective ownership percentages. In the case of acquisitions of entities under common control, such Common Control Gains or Losses are allocated in accordance with their respective partnership percentages under the Amended and Restated Agreement of Limited Partnership dated as of May 12, 1987, as amended from time to time (together with the partnership agreement of Icahn Enterprises Holdings, the “Partnership Agreement”) (i.e., 98.01% to the limited partners and 1.99% to the general partner).

Statement of cash flow, policy [Policy Text Block]

Cash FlowCash and cash equivalents and restricted cash and restricted cash equivalents in our consolidated statements of cash flows is comprised of (i) cash and cash equivalents and (ii) cash held at consolidated affiliated partnerships and restricted cash.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash EquivalentsWe consider short-term investments, which are highly liquid with original maturities of three months or less at date of purchase, to be cash equivalents.

Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]

Cash Held at Consolidated Affiliated Partnerships and Restricted Cash

Our cash held at consolidated affiliated partnerships balance was $2,648 million and $192 million as of December 31, 2018 and December 31, 2017, respectively. Cash held at consolidated affiliated partnerships relates to our Investment segment and consists of cash and cash equivalents held by the Investment Funds that, although not legally restricted, is not available to fund the general liquidity needs of the Investment segment or Icahn Enterprises.

Our restricted cash balance was $34 million and $555 million as of December 31, 2018 and December 31, 2017, respectively. Restricted cash includes, but is not limited to, our Investment segment's cash pledged and held for margin requirements on derivative transactions.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value Option for Financial Assets and Financial LiabilitiesThe fair value option gives entities the option to measure eligible financial assets, financial liabilities and firm commitments at fair value (i.e., the fair value option), on an instrument-by-instrument basis, that are otherwise not permitted to be accounted for at fair value pursuant to the provisions of FASB Accounting Standards Codification ("ASC") Topic 825, Financial Instruments. The election to use the fair value option is available when an entity first recognizes a financial asset or financial liability or upon entering into a firm commitment. Subsequent changes in fair value must be recorded in earnings. In estimating the fair value for financial instruments for which the fair value option has been elected, we use the valuation methodologies in accordance to where the financial instruments are classified within the fair value hierarchy as discussed in Note 5, “Fair Value Measurements.” For our Investment segment, we apply the fair value option to our investments that would otherwise be accounted under the equity method.

Derivatives, Policy [Policy Text Block]

DerivativesFrom time to time, our subsidiaries enter into derivative contracts, including purchased and written option contracts, swap contracts, futures contracts and forward contracts. U.S. GAAP requires recognition of all derivatives as either assets or liabilities in the balance sheet at their fair value. The accounting for changes in fair value depends on the intended use of the derivative and its resulting designation. For those derivative instruments that are designated and qualify as hedging instruments, a company must designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge or a hedge of a net investment in a foreign operation. Gains and losses related to a hedge are either recognized in income immediately to offset the gain or loss on the hedged item or are deferred and reported as a component of accumulated other comprehensive loss and subsequently recognized in earnings when the hedged item affects earnings. The change in fair value of the ineffective portion of a financial instrument, determined using the hypothetical derivative method, is recognized in earnings immediately. The gain or loss related to financial instruments that are not designated as hedges are recognized immediately in earnings. Cash flows related to hedging activities are included in the operating section of the consolidated statements of cash flows. For further information regarding our derivative contracts, see Note 6, “Financial Instruments

Trade and Other Accounts Receivable, Policy [Policy Text Block]

Accounts Receivable, NetAccounts receivable, net consists of trade receivables from customers, including contract assets when we have an unconditional right to receive consideration. An allowance for doubtful accounts is determined through analysis of the aging of accounts receivable at the date of the consolidated financial statements, assessments of collectability based on an evaluation of historic and anticipated trends, the financial condition of our customers, and an evaluation of the impact of economic conditions. Our allowance for doubtful accounts is an estimate based on specifically identified accounts as well as general reserves based on historical experience.

Property, Plant and Equipment, Policy [Policy Text Block]

Long-Lived Assets

Long-lived assets such as property, plant, and equipment, and definite-lived intangible assets are recorded at cost or fair value established at acquisition, less accumulated depreciation or amortization, unless the expected future use of the assets indicate a lower value is appropriate. Long-lived asset groups are evaluated for impairment when impairment indicators exist. If the carrying value of a long-lived asset group is impaired, an impairment charge is recorded for the amount by which the carrying value of the long-lived asset group exceeds its fair value. Depreciation and amortization are computed principally by the straight-line method for financial reporting purposes.

Land and construction in progress are stated at the lower of cost or net realizable value. Interest is capitalized on expenditures for long-term projects until a salable or ready-for-use condition is reached. The interest capitalization rate is based on the interest rate on specific borrowings to fund the projects.

Goodwill and Intangible Assets, Policy [Policy Text Block]

Goodwill and Indefinite-Lived Intangible AssetsGoodwill and indefinite-lived intangible assets primarily include trademarks and brand names acquired in acquisitions. For a complete discussion of the impairment of goodwill and indefinite-lived intangible assets related to our various segments, see Note 8, “Goodwill and Intangible Assets, Net.”

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

Goodwill

Goodwill is determined as the excess of fair value over amounts attributable to specific tangible and intangible assets. Goodwill is reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a reporting unit’s carrying value exceeds its fair value. When performing the goodwill impairment testing, a reporting units’ fair value is based on valuation techniques using the best available information, primarily discounted cash flows projections, guideline transaction multiples, and multiples of current and future earnings. The impairment charge, if any, is the excess of the tested reporting unit's carrying value over its fair value, limited to the total amount of goodwill allocated to the tested reporting unit.

Indefinite-Lived Intangible Assets

Indefinite-lived intangible assets are stated at fair value established at acquisition or cost. These indefinite-lived intangible assets are reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a trademark or brand names' carrying value exceeds its fair value. The fair values of these assets are based upon the prospective stream of hypothetical after-tax royalty cost savings discounted at rates that reflect the rates of return appropriate for these intangible assets. The impairment charge, if any, is the excess of the assets carrying value over its fair value.

Pension and Other Postretirement Plans, Policy [Policy Text Block]

Pension and Other Post-Retirement Benefit Plan Obligations

Post-retirement benefit liabilities were $77 million and $80 million as of December 31, 2018 and 2017, respectively, and are included in accrued expenses and other liabilities in our consolidated balance sheets.

Appropriate actuarial methods and assumptions are used in accounting for defined benefit pension plans and other post-retirement benefit plans. These assumptions include long-term rate of return on plan assets, discount rates and other factors. Actual results that differ from the assumptions used are accumulated and amortized over future periods. Therefore, assumptions used to calculate benefit obligations as of the end of the year directly impact the expense to be recognized in future periods. The measurement date for all defined benefit plans is December 31 of each year.

General partnership policy [Policy Text Block]

General Partnership Interest of Icahn Enterprises and Icahn Enterprises Holdings

The general partner's capital account generally consists of its cumulative share of our net income less cash distributions plus capital contributions. Additionally, in acquisitions of common control companies accounted for at historical cost similar to a pooling of interests, the general partner's capital account would be charged (or credited) in a manner similar to a distribution (or contribution) for the excess (or deficit) of the fair value of consideration paid over historical basis in the business acquired.

Capital Accounts, as defined under the Partnership Agreement, are maintained for our general partner and our limited partners. The capital account provisions of our Partnership Agreement incorporate principles established for U.S. federal income tax purposes and are not comparable to the equity accounts reflected under U.S. GAAP in our consolidated financial statements. Under our Partnership Agreement, the general partner is required to make additional capital contributions to us upon the issuance of any additional depositary units in order to maintain a capital account balance equal to 1.99% (1% in the case of Icahn Enterprises Holdings) of the total capital accounts of all partners.

Generally, net earnings for U.S. federal income tax purposes are allocated 1.99% (1% in the case of Icahn Enterprises Holdings) and 98.01% (99% in the case of Icahn Enterprises Holdings) between the general partner and the limited partners, respectively, in the same proportion as aggregate cash distributions made to the general partner and the limited partners during the period. This is generally consistent with the manner of allocating net income under our Partnership Agreement; however, it is not comparable to the allocation of net income reflected in our consolidated financial statements.

Pursuant to the Partnership Agreement, in the event of our dissolution, after satisfying our liabilities, our remaining assets would be divided among our limited partners and the general partner in accordance with their respective percentage interests under the Partnership Agreement. If a deficit balance still remains in the general partner's capital account after all allocations are made between the partners, the general partner would not be required to make whole any such deficit.

Earnings Per Share, Policy [Policy Text Block]

Basic and Diluted Income Per LP Unit

For Icahn Enterprises, basic income (loss) per LP unit is based on net income or loss attributable to Icahn Enterprises allocated to limited partners. Net income or loss allocated to limited partners is divided by the weighted-average number of LP units outstanding. Diluted income (loss) per LP unit, when applicable, is based on basic income (loss) adjusted for the potential effect of dilutive securities as well as the related weighted-average number of units and equivalent units outstanding.

For accounting purposes, when applicable, earnings prior to dates of acquisitions of entities under common control are excluded from the computation of basic and diluted income per LP unit as such earnings are allocated to our general partner.

Income Tax, Policy [Policy Text Block]

Income Taxes

Except as described below, no provision has been made for federal, state, local or foreign income taxes on the results of operations generated by partnership activities, as such taxes are the responsibility of the partners. Provision has been made for federal, state, local or foreign income taxes on the results of operations generated by our corporate subsidiaries and these are reflected within continuing and discontinued operations. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

Deferred tax assets are limited to amounts considered to be realizable in future periods. A valuation allowance is recorded against deferred tax assets if management does not believe that we have met the “more-likely-than-not” standard to allow recognition of such an asset.

U.S. GAAP provides that the tax effects from an uncertain tax position can be recognized in the financial statements only if the position is “more-likely-than-not” to be sustained if the position were to be challenged by a taxing authority. The assessment of the tax position is based solely on the technical merits of the position, without regard to the likelihood that the tax position may be challenged. If an uncertain tax position meets the “more-likely-than-not” threshold, the largest amount of tax benefit that is greater than 50 percent likely to be recognized upon ultimate settlement with the taxing authority is recorded. See Note 14, “Income Taxes,” for additional information.

Environmental Costs, Policy [Policy Text Block]

Environmental Liabilities

We recognize environmental liabilities when a loss is probable and reasonably estimable. Estimates of these costs are based upon currently available facts, internal and third-party assessments of contamination, available remediation technology, site-specific costs, and currently enacted laws and regulations. In reporting environmental liabilities, no offset is made for potential recoveries. Loss contingency accruals, including those for environmental remediation, are subject to revision as further information develops or circumstances change, and such accruals can take into account the legal liability of other parties. Environmental expenditures are capitalized at the time of the expenditure when such costs provide future economic benefits.

Commitments and Contingencies, Policy [Policy Text Block]

LitigationOn an ongoing basis, we assess the potential liabilities related to any lawsuits or claims brought against us. While it is typically very difficult to determine the timing and ultimate outcome of such actions, we use our best judgment to determine if it is probable that we will incur an expense related to the settlement or final adjudication of such matters and whether a reasonable estimation of such probable loss, if any, can be made. In assessing probable losses, we make estimates of the amount of insurance recoveries, if any. We accrue a liability when we believe a loss is probable and the amount of loss can be reasonably estimated. Due to the inherent uncertainties related to the eventual outcome of litigation and potential insurance recovery, it is possible that certain matters may be resolved for amounts materially different from any provisions or disclosures that we have previously made.

New Accounting Pronouncements, Policy [Policy Text Block]

Adoption of New Accounting Standards

Revenue Accounting Standards Updates

In May 2014, the FASB issued ASU No. 2014-09, creating a new topic, FASB ASC Topic 606, Revenue from Contracts with Customers, superseding revenue recognition requirements in FASB ASC Topic 605, Revenue Recognition. This ASU requires that an entity recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In addition, an entity is required to disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU was amended by ASU No. 2015-14, issued in August 2015, which deferred the original effective date by one year; the effective date of this ASU is for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, using one of two retrospective application methods. In addition, the FASB issued other amendments during 2016 and 2017 to FASB ASC Topic 606 that include implementation guidance to principal versus agent considerations, guidance to identifying performance obligations and licensing guidance and other narrow scope improvements. We adopted these new standards on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The standard has been applied to all contracts at the date of initial application. No adjustment to revenue for periods prior to adoption were required. We have not identified any material differences in our revenue recognition methods that required modification under the new standards. Additionally, our internal control framework did not materially change as a result of the adoption of these new standards. The impact of adopting these new standards on our consolidated financial statements is a cumulative effect adjustment to decrease our equity attributable to Icahn Enterprises and Icahn Enterprises Holdings as of January 1, 2018 by $29 million, primarily relating to our Automotive segment.

As of January 1, 2018, our Energy segment increased each of accounts receivable, net and accrued expenses and other liabilities by $21 million for customer prepayments prior to delivery and to gross up certain fees collected from customers to reflect a receivable and deferred revenue recorded at the point in time in which a prepaid contract is legally enforceable and the associated right to consideration is unconditional. Previously, deferred revenue was recorded by our Energy segment upon customer prepayment.

As of January 1, 2018, our Automotive segment increased accrued expenses and other liabilities by $42 million and decreased deferred tax liabilities by $10 million for certain extended warranties to reflect the revenues from these plans as deferred revenue. Previously, revenues from these plans were recognized upfront. Our Automotive segment also recognizes revenue from the sale of goods on a drop ship basis. Previously, revenues from these transactions were recognized gross. For the year ended December 31, 2018, net sales and cost of goods sold would have been higher by $62 million and $62 million, respectively, under prior accounting principles.

In addition to the above, we increased assets by an aggregate of $32 million and increased liabilities by $29 million as of January 1, 2018, primarily with respect to Federal-Mogul's asset and liabilities classified as held for sale. For the year ended December 31, 2018, the impact on revenues would have been immaterial under prior accounting principles.

Other Accounting Standards Updates

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall, which amends FASB ASC Topic 825, Financial Instruments. This ASU requires that equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes recognized in earnings. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment. In addition, there were other amendments to certain disclosure and presentation matters pertaining to financial instruments, including the requirement of an entity to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. We adopted this new standard on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The amendments related to equity securities without readily determinable fair values were applied prospectively to equity investments that existed as of the date of adoption. The adoption of this standard did not have a material impact on our consolidated financial statements.

In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU seeks to reduce the diversity currently in practice by providing guidance on the presentation of eight specific cash flow issues in the statement of cash flows. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The adoption of this standard did not have a material impact on our consolidated statements of cash flows.

In November 2016, the FASB issued ASU No. 2016-18, Restricted Cash, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU requires that the statement of cash flows explain the change during the period total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We have adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications."

In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which amends FASB ASC Topic 715, Compensation - Retirement Benefits. This ASU requires entities to present the service cost component of net periodic benefit cost in the same line item or items in the financial statements as other compensation costs arising from services rendered by the pertinent employees during the period. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications."

In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, which amends FASB ASC Topic 718, Compensation - Stock Compensation. This ASU provides updated guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 which has been applied prospectively and which did not have a material impact on our consolidated financial statements.

Description of New Accounting Pronouncements Not yet Adopted [Text Block]

Recently Issued Accounting Standards

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which supersedes FASB ASC Topic 840, Leases. This ASU requires the recognition of right-of-use assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. In addition, among other changes to the accounting for leases, this ASU retains the distinction between finance leases and operating leases. The classification criteria for distinguishing between finance leases and operating leases are substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the previous guidance. Furthermore, quantification and qualitative disclosures, including disclosures regarding significant judgments made by management, will be required. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The amendments in this ASU should be applied using a modified retrospective approach. Early application is permitted. In addition, in July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842), which provides an additional (and optional) transition method to adopt the new leases standard. We have developed an implementation plan to adopt the new leases standard using the new transition method option effective January 1, 2019, which will require adopting the new leases standard at the adoption date and recognizing a cumulative-effect adjustment to the opening balance of equity in the period of adoption instead of the earliest period presented. In addition, prior period presentation and disclosure will not be adjusted after adoption. The most significant impact will relate to the recognition of right-of-use assets and lease liabilities on our consolidated balance sheets for long-term operating leases with the significant majority of the impact within our Automotive segment. Our Automotive segment has identified approximately 2,300 leases, primarily for real estate, and estimates recognizing right-of-use assets of $639 million and related liabilities of $674 million as of January 1, 2019. Our Energy segment estimates recognizing right-of-use assets and liabilities of $53 million, in addition to the recognition of finance lease assets and obligations of $26 million, as of January 1, 2019. The aggregate impact of all other segments is not material.

In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments, which amends FASB ASC Topic 326, Financial Instruments - Credit Losses. This ASU requires financial assets measured at amortized cost to be presented at the net amount to be collected and broadens the information, including forecasted information incorporating more timely information, that an entity must consider in developing its expected credit loss estimate for assets measured. This ASU is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early

application is permitted for fiscal years beginning after December 15, 2018. We are currently evaluating the impact of this standard on our consolidated financial statements.

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which amends FASB ASC Topic 815, Derivatives and Hedging. This ASU includes amendments to existing guidance to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which amends FASB ASC Topic 220, Income Statement - Reporting Comprehensive Income. This ASU allows a reclassification out of accumulated other comprehensive loss within equity for standard tax effects resulting from the Tax Cuts and Jobs Act and consequently, eliminates the stranded tax effects resulting from the Tax Cuts and Jobs Act. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurements, which amends FASB ASC Topic 820, Fair Value Measurements. This ASU eliminates, modifies and adds various disclosure requirements on fair value measurements. This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Certain disclosures are required to be applied using a retrospective approach and others using a prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract, which amends FASB ASC Subtopic 350-40, Intangibles-Goodwill and Other-Internal-Use Software. This ASU adds certain disclosure requirements related to implementation costs incurred for internal-use software and cloud computing arrangements. The amendment aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The amendments in this ASU should be applied either using a retrospective or prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

Investment Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Investment, Policy [Policy Text Block]

Investment

Investment Transactions and Related Investment Income (Loss). Investment transactions of the Investment Funds are recorded on a trade date basis. Realized gains or losses on sales of investments are based on the first-in, first-out or the specific identification method. Realized and unrealized gains or losses on investments are recorded in the consolidated statements of operations. Interest income and expenses are recorded on an accrual basis and dividends are recorded on the ex-dividend date. Premiums and discounts on fixed income securities are amortized using the effective yield method.

Investments held by the Investment segment are carried at fair value. Our Investment segment applies the fair value option to those investments that are otherwise subject to the equity method.

Valuation of Investments. Securities of the Investment Funds that are listed on a securities exchange are valued at their last sales price on the primary securities exchange on which such securities are traded on such date. Securities that are not listed on any exchange but are traded over-the-counter are valued at the mean between the last “bid” and “ask” price for such security on such date. Securities and other instruments for which market quotes are not readily available are valued at fair value as determined in good faith by the Investment Funds.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign Currency Transactions. The books and records of the Investment Funds are maintained in U.S. dollars. Assets and liabilities denominated in currencies other than U.S. dollars are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Transactions during the period denominated in currencies other than U.S. dollars are translated at the rate of exchange applicable on the date of the transaction. Foreign currency translation gains and losses are recorded in the consolidated statements of operations. The Investment Funds do not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in the market prices of securities. Such fluctuations are reflected in net gain (loss) from investment activities in the consolidated statements of operations.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Values of Financial Instruments. The fair values of the Investment Funds' assets and liabilities that qualify as financial instruments under applicable U.S. GAAP approximate the carrying amounts presented in the consolidated balance sheets.

Securities sold, not yet purchased [Policy Text Block]

Securities Sold, Not Yet Purchased. The Investment Funds may sell an investment they do not own in anticipation of a decline in the fair value of that investment. When the Investment Funds sell an investment short, they must borrow the investment sold short and deliver it to the broker-dealer through which they made the short sale. A gain, limited to the price at which the Investment Funds sold the investment short, or a loss, unlimited in amount, will be recognized upon the cover of the short sale.

Due to and from Broker [Policy Text Block]

Due From Brokers. Due from brokers represents cash balances with the Investment Funds' clearing brokers. These funds as well as fully-paid for and marginable securities are essentially restricted to the extent that they serve as collateral against securities sold, not yet purchased. Due from brokers may also include unrestricted balances with derivative counterparties. Due To Brokers. Due to brokers represents margin debit balances collateralized by certain of the Investment Funds' investments in securities.

Allocation of profits and losses in consolidated affiliated partnerships [Policy Text Block]

Allocation of Net Profits and Losses in Consolidated Affiliated Partnerships

Net investment income and net realized and unrealized gains and losses on investments of the Investment Funds are allocated to the respective partners of the Investment Funds based on their percentage ownership in such Investment Funds on a monthly basis. Except for our limited partner interest, such allocations made to the limited partners of the Investment Funds are represented as non-controlling interests in our consolidated statements of operations.

Energy Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Inventory, Policy [Policy Text Block]

EnergyOur Energy segment inventories consist primarily of domestic and foreign crude oil, blending stock and components, work in progress, fertilizer products, and refined fuels and by-products. Inventories are valued at the lower of FIFO cost, or net realizable value for fertilizer products, refined fuels and by-products for all periods presented. Refinery unfinished and finished products inventory values were determined using the ability-to-bear process, whereby raw materials and production costs are allocated to work-in-process and finished goods based on their relative fair values. Other inventories, including other raw materials, spare parts and supplies, are valued at the lower of moving-average cost, which approximates FIFO, or net realizable value. The cost of inventories includes inbound freight costs.

Property, Plant and Equipment, Planned Major Maintenance Activities, Policy [Policy Text Block]

Energy

The direct-expense method of accounting is used for planned major maintenance activities. Maintenance costs are recognized as expense when maintenance services are performed. Planned major maintenance activities for CVR Energy's nitrogen plant generally occur every two to three years. The required frequency of planned major maintenance activities varies by unit for the refineries, but generally is every four to five years.

For the years ended December 31, 2018, 2017, and 2016, our Energy segment recorded an aggregate of $10 million, $83 million and $38 million, respectively, in turnaround expenses related to its refineries and nitrogen fertilizer plants.

Revenue Recognition, Policy [Policy Text Block]

Energy

Revenue: Our Energy segment revenues from the sale of petroleum products are recorded upon delivery of the products to customers, which is the point at which title is transferred and the customer has assumed the risk of loss. This generally takes place as product passes into the pipeline, as a product transfer order occurs within a pipeline system, or as product enters equipment or locations supplied or designated by the customer. For our Energy segment's nitrogen fertilizer products sold, revenues are recorded at the point in time at which the customer obtains control of the product, which is generally upon delivery and acceptance by the customer. Nitrogen fertilizer products are sold on a wholesale basis under a contract or by purchase order. Excise and other taxes collected from customers and remitted to governmental authorities by our Energy segment are not included in reported revenues.

The petroleum business' contracts with its customers state the terms of the sale, including the description, quantity, and price of each product sold. Depending on the product sold, payment from customers is generally due in full within 2 to 30 days of product delivery or invoice date. Many of the petroleum business' contracts have index-based pricing which is considered variable consideration that should be estimated in determining the transaction price. Our Energy segment determined that it does not need to estimate the variable consideration because the uncertainty related to the consideration is resolved on the pricing date or the date when the product is delivered. The nitrogen fertilizer business has an immaterial amount of variable consideration for contracts with an original duration of less than a year. A small portion of the nitrogen fertilizer partnership's revenue includes contracts extending beyond one year and contain variable pricing in which the majority of the variability is attributed to the market-based pricing. The nitrogen fertilizer business' contracts do not contain a significant financing component.

Shipping and Handling Cost, Policy [Policy Text Block]

EnergyShipping Costs: Our Energy segment's pass-through finished goods delivery costs reimbursed by customers are reported in net sales, while an offsetting expense is included in cost of goods sold.

Automotive Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Revenue Recognition, Policy [Policy Text Block]

AutomotiveRevenue: Our Automotive segment recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Our Automotive segment revenue from retail and commercial parts sales is measured based on consideration specified in a contract with a customer and excludes any sales incentives and amounts collected on behalf of third parties. Automotive service revenues are recognized on completion of the service and consist of products and the labor charged for installing products or maintaining or repairing vehicles. Automotive services labor revenues are included in other revenues from operations in our consolidated statements of operations, however, the sale of any installed parts or materials related to automotive services are included in net sales. Our Automotive segment recognizes revenues from extended warranties offered to its customers on tires its sells, including lifetime warranties for road hazard assistance (recognized over 3 years) and 1-year, 3-year and lifetime plans for alignments (recognized over 1 year, 3 years and 5 years, respectively), for which it receives payment upfront. Revenues from extended warranties are recognized over the term of the warranty contract with the satisfaction of its performance obligations measured using the output method. Our Automotive segment recognizes revenues from franchise fees, which it receives payment upfront, and franchise royalties, for which it receives payment over time. Revenues from upfront franchise fees are recognized at the time the store opens, as that is when our Automotive segment's performance obligations are deemed complete, and revenues from franchise royalties are recognized in the period in which royalties are earned, generally based on a percentage of franchise sales.

Shipping and Handling Cost, Policy [Policy Text Block]

Automotive Shipping Costs: Our Automotive segment recognizes shipping and handling costs as incurred and is included in selling, general and administrative in the consolidated statements of operations for its commercial and retail parts businesses.

Food Packaging Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Revenue Recognition, Policy [Policy Text Block]

Food PackagingOur Food Packaging segment revenues are recognized at the time products are shipped to the customer, under F.O.B. shipping point or F.O.B. port terms, which is the point at which title is transferred, the customer has the assumed risk of loss, and payment has been received or collection is reasonably assumed. Revenues are net of discounts, rebates and allowances. Viskase records all labor, raw materials, in-bound freight, plant receiving and purchasing, warehousing, handling and distribution costs as a component of costs of goods sold.

Metals Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Inventory, Policy [Policy Text Block]

MetalsOur Metals segment inventories are stated at the lower of cost or market. Cost is determined using the average cost method. The production and accounting process utilized by our Metals segment to record recycled metals inventory quantities relies on significant estimates. Our Metals segment relies upon perpetual inventory records that utilize estimated recoveries and yields that are based upon historical trends and periodic tests for certain unprocessed metal commodities. Over time, these estimates are reasonably good indicators of what is ultimately produced; however, actual recoveries and yields can vary depending on product quality, moisture content and source of the unprocessed metal. To assist in validating the reasonableness of the estimates, our Metals segment performs periodic physical inventories which involve the use of estimation techniques. Physical inventories may detect significant variations in volume, but because of variations in product density and production processes utilized to manufacture the product, physical inventories will not generally detect smaller variations. To help mitigate this risk, our Metals segment adjusts its physical inventories when the volume of a commodity is low and a physical inventory can more accurately estimate the remaining volume.

Revenue Recognition, Policy [Policy Text Block]

MetalsOur Metals segment's primary source of revenue is from the sale of processed ferrous scrap metal, non-ferrous scrap metals, steel pipe and steel plate. PSC Metals also generates revenues from sales of secondary plate and pipe, the brokering of scrap metals and from services performed. All sales are recognized when title passes to the customer. Revenues from services are recognized as the service is performed. Sales adjustments related to price and weight differences are reflected as a reduction of revenues when settled.

Real Estate Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Revenue Recognition, Policy [Policy Text Block]

Revenue Recognition: Revenue from real estate sales and related costs are recognized at the time of closing primarily by specific identification. Substantially all of the property comprising our net lease portfolio is leased to others under long-term net leases and we account for these leases in accordance with applicable U.S. GAAP. We account for our leases as follows: (i) under the financing method, (x) minimum lease payments to be received plus the estimated value of the property at the end of the lease are considered the gross investment in the lease and (y) unearned income, representing the difference between gross investment and actual cost of the leased property, is amortized to income over the lease term so as to produce a constant periodic rate of return on the net investment in the lease; and (ii) under the operating method, revenue is recognized as rentals become due, and expenses (including depreciation) are charged to operations as incurred.

Home Fashion Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Revenue Recognition, Policy [Policy Text Block]

Home FashionOur Home Fashion segment records revenue upon delivery and when title is transferred and the customer has assumed the risk of loss. Unless otherwise agreed in writing, title and risk of loss pass from WPH to the customer when WPH delivers the merchandise to the designated point of delivery, to the designated point of destination or to the designated carrier, free on board. Provisions for certain rebates, sales incentives, product returns and discounts to customers are recorded in the same period the related revenue is recorded.

Revenue Recognition, Incentives [Policy Text Block]

Mining Segment

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Inventory, Policy [Policy Text Block]

MiningOur Mining segment inventories are valued at the lower of cost or market. Cost includes all costs incurred in the normal course of business in bringing each product to its present location and condition, including direct materials and direct labor costs, and an allocation of production overheads based on normal production capacity. Cost is calculated using weighted average unit cost.

Mining exploration and evaluation expenditures, Policy [Policy Text Block]

Mining

The costs of acquiring mineral reserves and resources for our Mining segment are capitalized in the consolidated balance sheets as incurred. Capitalized mineral reserves and mine development expenditures are, upon commencement of commercial production, depreciated using a unit of production method based on the estimated economically recoverable reserves to which they relate, or are written off if abandoned.

Exploration and evaluation expenditures relate to costs incurred in the exploration and evaluation of potential mineral reserves and include costs such as exploratory drilling, sample testing and the costs of feasibility studies. For our Mining segment, exploration and evaluation expenditures other than that acquired through the purchase of another mining company, are expensed as incurred. Purchased exploration and evaluation assets are recognized as assets at their cost of acquisition or at fair value if purchased as part of a business combination.

Expenditures are transferred to mine development assets once the work completed supports the future development of the property, provided that technical feasibility and commercial viability studies have been successfully completed.

Revenue Recognition, Policy [Policy Text Block]

MiningOur Mining segment recognizes revenue when title, ownership, and risk of loss pass to the customer, all of which occur upon shipment or delivery of the product and is based on the applicable shipping terms. Revenue is measured at the fair value of the consideration received or receivable, with any adjustments as a result of provisional pricing recorded against revenue.

Other Segments and Holding Company

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Equity Method Investments [Policy Text Block]

Except for our Investment segment, for equity investments in which we own 50% or less but greater than 20%, we generally account for such investments using the equity method. All other equity investments are accounted for at fair value.

Investment, Policy [Policy Text Block]

Other Segments and Holding CompanyInvestments in equity and debt securities are carried at fair value with the unrealized gains or losses reflected in the consolidated statements of operations. For purposes of determining gains and losses, the cost of securities is based on specific identification. Dividend income is recorded when declared and interest income is recognized when earned.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign Currency TranslationExchange adjustments related to international currency transactions and translation adjustments for international subsidiaries whose functional currency is the U.S. dollar (principally those located in highly inflationary economies) are reflected in the consolidated statements of operations. Translation adjustments of international subsidiaries for which the local currency is the functional currency are reflected in the consolidated balance sheets as a component of accumulated other comprehensive income. Deferred taxes are not provided on translation adjustments, other than for intercompany loans not designated as permanently reinvested, as the earnings of the subsidiaries are considered to be permanently reinvested.

Automotive, Food Packaging and Home Fashion Segments

Organization, Consolidation and Presentation of Financial Statements [Line Items]

Inventory, Policy [Policy Text Block]

Automotive, Food Packaging, and Home FashionOur Automotive, Food Packaging and Home Fashion segment inventories are stated at the lower of cost or market. Cost is determined by using the first-in, first-out basis method ("FIFO"), except for our Automotive segment, which also utilizes weighted-average cost and the last-in, first-out method for certain of its subsidiaries. Inventory recorded using the last-in, first-out method was $846 million and $900 million as of December 31, 2018 and 2017, respectively, all of which relates to finished goods. The cost of manufactured goods includes the cost of direct materials, labor and manufacturing overhead. Our Automotive, Food Packaging and Home Fashion segments reserve for estimated excess, slow-moving and obsolete inventory as well as inventory whose carrying value is in excess of net realizable value.