Cover page. Document Information [Table] Document Information [Table] Legal Entity [Axis] Entity [Domain] Entity [Domain] Icahn Enterprises Holdings [Member] Icahn Enterprises Holdings [Member] Icahn Enterprises Holdings Document Information [Line Items] Document Information [Line Items] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Assets [Abstract] Assets ASSETS Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Restricted Cash and Cash Equivalents Cash held at consolidated affiliated partnerships and restricted cash Investments Investments Due From Brokers Due From Brokers Due from brokers Accounts Receivable, after Allowance for Credit Loss Accounts receivable, net Inventory, Net Inventories, net Inventory, net Property, Plant and Equipment, Net Property, plant and equipment, net Derivative Asset Derivative assets, net Unrealized Gain On Derivative Contracts Unrealized Gain On Derivative Contracts Derivative contracts, at fair value Unrealized gain on derivative contracts Goodwill Goodwill Net Carrying Value Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Other Assets Other assets Assets Assets Total Assets Liabilities and Equity [Abstract] LIABILITIES AND EQUITY Accounts Payable Accounts payable Accrued Liabilities Accrued expenses and other liabilities Deferred Tax Liabilities, Net Deferred tax liabilities Derivative Liability Derivative liabilities, net Derivative contracts at fair value Derivative liabilities, net Financial Instruments Sold, Not yet Purchased, at Fair Value Securities sold, not yet purchased, at fair value Securities sold, not yet purchased Due to Correspondent Brokers Due to brokers Debt and Lease Obligation Debt Carrying value Liabilities Total liabilities Total liabilities Liabilities Commitments and Contingencies Commitments and contingencies (Note 16) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity: Limited Partners' Capital Account Limited partner General Partners' Capital Account General partner Partners' Capital Equity attributable to Icahn Enterprises Equity attributable to Icahn Enterprises Partners' Capital Attributable to Noncontrolling Interest Equity attributable to non-controlling interests Partners' Capital, Including Portion Attributable to Noncontrolling Interest Total equity Total equity Total equity Total equity Liabilities and Equity Total liabilities and equity Total Liabilities and Equity Stockholders' Equity Attributable to Parent [Abstract] Equity: Limited Partners' Capital Account, Units Issued Limited partners: Depositary units issued Limited Partners' Capital Account, Units Outstanding Limited partners: Depositary units outstanding CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) Revenues [Abstract] Revenues: Net Sales. Net Sales Net sales Other operating revenue. Other Operating Revenue Other revenues from operations Gain (Loss) on Investments, Excluding Other than Temporary Impairments Net (loss) gain from investment activities Interest and Dividend Income, Operating Interest and dividend income Other Nonoperating Income (Expense) Other (loss) income, net Other (loss) income, net Revenues Revenues Total Revenues Costs and Expenses [Abstract] Expenses: Cost of goods sold new. Cost Of Goods Sold (New) Cost of goods sold Cost of other revenue from operations. Cost Of Other Revenue From Operations Other expenses from operations Selling, General and Administrative Expense Selling, general and administrative Restructuring Charges Restructuring, net Asset Impairment Charges Impairment Interest Expense Interest expense Costs and Expenses Expenses Total Expenses Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest (Loss) income before income tax (expense) benefit Income (loss) from continuing operations before income tax benefit (expense) (Loss) income before income tax (expense) benefit Income Tax Expense (Benefit) Income tax benefit (expense) Income tax (expense) benefit Income tax benefit (expense) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net (loss) income Net (loss) income Net Income (Loss) Attributable to Noncontrolling Interest Less: net (loss) income attributable to non-controlling interests Net Income (Loss) Attributable to Parent Net loss attributable to Icahn Enterprises Net (loss) income attributable to Icahn Enterprises Net Income (Loss) Attributable to Parent [Abstract] Net loss attributable to Icahn Enterprises allocated to: Net Income (Loss) Allocated to Limited Partners Limited partner Net loss attributable to Icahn Enterprises allocated to limited partners (98.01% allocation) Net Income (Loss) Allocated to General Partners General partner Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax [Abstract] Basic and diluted (loss) income per LP unit: Basic and diluted loss per LP unit: Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax Basic loss per LP unit Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted Diluted loss per LP unit Weighted Average Limited Partnership Units Outstanding, Basic Basic weighted average LP units outstanding Weighted Average Limited Partnership Units Outstanding, Diluted. Diluted weighted average LP units outstanding Distributions Per Limited Partnership Unit Outstanding, Basic Cash distributions declared per LP unit CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) Partner Type [Axis] Partner Type Of Partners Capital Account Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] General Partner [Member] General partner Limited Partner [Member] Limited partners Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Translation adjustments Other comprehensive (loss) income, translation adjustments, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Other comprehensive (loss) income, post-retirement benefits, net of tax Post-retirement benefits and other Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Other comprehensive (loss) income, net of tax Accumulated Other Comprehensive Loss, net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Less: Comprehensive (loss) income attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss attributable to Icahn Enterprises CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) Partner Capital Components [Axis] Partner Capital Components [Domain] Partner Capital Components [Domain] Parent [Member] Total Partners' Equity Capital Units [Member] Capital Units Noncontrolling Interest [Member] Non-controlling Interests Increase (Decrease) in Partners' Capital [Roll Forward] Increase (Decrease) in Equity Temporary equity reversal of distribution payable. Temporary Equity Reversal Of Distribution Payable Partnership distributions payable reversal Partners' Capital Account, Distributions Partnership distributions Partners' Capital Account, Contributions Partnership contributions Investment segment contributions. Investment Segment Contributions Investment segment contributions from non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Dividends and distributions to non-controlling interests in subsidiaries Stockholders' Equity, Other Changes in subsidiary equity and other CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash used in operating activities: Gain (Loss) on Investments Net (gain) loss from securities transactions Purchases Of Securities Purchases Of Securities Purchases of securities Proceeds From Sale Of Securities Proceeds From Sale Of Securities Proceeds from sales of securities Purchases to cover securities sold not yet purchased Purchases to Cover Securities Sold Not Yet Purchased Payments to cover securities sold, not yet purchased Investment Sold, Not yet Purchased, Sale Proceeds Proceeds from securities sold, not yet purchased Increase (Decrease) in Broker-Dealer Related Receivables (Payables), Net Changes in receivables and payables relating to securities transactions Increase (Decrease) in Derivative Assets and Liabilities Changes in derivative assets and liabilities Depreciation, Depletion and Amortization Depreciation and amortization Increase (Decrease) in Deferred Income Taxes Deferred taxes Other Operating Activities, Cash Flow Statement Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Changes in other operating assets and liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Property, Plant, and Equipment Capital expenditures Capital expenditures Amount of turnaround expenditures paid during the period. Payments for turnaround expenditures Turnaround expenditures Payments to Acquire Businesses, Net of Cash Acquired Acquisition of businesses, net of cash acquired Payments to Acquire Investments Purchases of investments Proceeds from Sale, Maturity and Collection of Investments Proceeds from sale of investments Proceeds from Sales of Business, Affiliate and Productive Assets Proceeds from disposition of businesses and assets Payments for (Proceeds from) Other Investing Activities Other, net Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Proceeds from Contributions from Affiliates Investment segment contributions from non-controlling interests Proceeds from Partnership Contribution Partnership contributions Payments of Dividends Partnership distributions Payments of Ordinary Dividends, Noncontrolling Interest Dividends and distributions to non-controlling interests in subsidiaries Proceeds from Issuance of Unsecured Debt Proceeds from Holding Company senior unsecured notes Repayments of Unsecured Debt Repayments of Holding Company senior unsecured notes Proceeds from Other Debt Proceeds from subsidiary borrowings Repayments of Other Debt Repayments of subsidiary borrowings Proceeds from (Payments for) Other Financing Activities Other, net Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Effect of Exchange Rate on Cash and Cash Equivalents Effect of exchange rate changes on cash and cash equivalents and restricted cash and restricted cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase (decrease) in cash and cash equivalents and restricted cash and restricted cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents and restricted cash and restricted cash equivalents, end of period Cash and cash equivalents and restricted cash and restricted cash equivalents, beginning of period Description of Business [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Description of Business Accounting Policies [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Basis of Presentation and Summary of Significant Accounting Policies Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related Party Transactions Schedule of Investments [Abstract] Investments and Other Noncurrent Assets [Text Block] Investments Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements Derivative Instruments and Hedging Activities Disclosure [Abstract] Financial Instruments Disclosure [Text Block] Financial Instruments Inventory, Net [Abstract] Inventory Disclosure [Text Block] Inventories, Net Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets, Net Leases [Abstract] Lessee, Operating Leases [Text Block] Leases Debt Disclosure [Abstract] Debt Disclosure [Text Block] Debt Earnings Per Unit [Abstract] Earnings Per Share [Text Block] Net Income Per LP Unit Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Segment Reporting Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Taxes Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Comprehensive Income (Loss) Note [Text Block] Changes in Accumulated Other Comprehensive Loss. Other Income and Expenses [Abstract] Other Income and Other Expense Disclosure [Text Block] Other (Loss) Income, Net Commitments and Contingencies Disclosure [Abstract]