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Summary of Significant Accounting Policies (Policies)
 6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Schedule of Significant Accounting Policies [Line Items]    
Derivatives, Policy [Policy Text Block]  
Derivatives
From time to time, our subsidiaries enter into derivative contracts, including purchased and written option contracts, swap contracts, futures contracts and forward contracts entered into by our Investment and Automotive segments. 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.
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
Our consolidated financial statements include the accounts of (i) Icahn Enterprises Holdings and (ii) the wholly and majority owned subsidiaries of Icahn Enterprises Holdings, in addition to those entities in which we have a controlling interest as a general partner interest or in which we may be the primary beneficiary of a variable interest entity (“VIE”). In evaluating whether we have a controlling financial interest in entities in which we would consolidate, we consider the following: (1) for voting interest entities, we consolidate these entities in which we own a majority of the voting interests; (2) for VIEs of which we may be considered the primary beneficiary of such entities (see Note 5, “Investments and Related Matters-Investment,” for further discussion regarding the accounting and reporting of our VIEs); and (3) for limited partnership entities that are not considered VIEs, we consolidate these entities if we are the general partner of such entities and for which no substantive kick-out rights (the rights underlying the limited partners' ability to dissolve the limited partnership or otherwise remove the general partners are collectively referred to as “kick-out” rights) or participating rights exist. All material intercompany accounts and transactions have been eliminated in consolidation.
Our consolidated financial statements include the accounts of (i) Icahn Enterprises Holdings and (ii) the wholly and majority owned subsidiaries of Icahn Enterprises Holdings, in addition to those entities in which we have a controlling interest as a general partner interest or in which we are the primary beneficiary of a variable interest entity (“VIE”). In evaluating whether we have a controlling financial interest in entities in which we would consolidate, we consider the following: (1) for voting interest entities, we consolidate these entities in which we own a majority of the voting interests; (2) for VIEs of which we are considered the primary beneficiary of such entities (see section below entitled, “Adoption of New Accounting Standards,” and Note 5, “Investments and Related Matters - Investment,” for further discussion regarding the accounting and reporting of our VIEs); and (3) for limited partnership entities that are not considered VIEs, we consolidate these entities if we are the general partner of such entities and for which no substantive kick-out rights (the rights underlying the limited partners' ability to dissolve the limited partnership or otherwise remove the general partners are collectively referred to as “kick-out” rights) or participating rights exist. All material intercompany accounts and transactions have been eliminated in consolidation.
Reclassification, Policy [Policy Text Block]  
Reclassifications
Certain reclassifications from the prior year presentation have been made to conform to the current year presentation.
Use of Estimates, Policy [Policy Text Block]  
Use of Estimates in Preparation of Financial Statements
The 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. The more significant estimates include: (1) the valuation allowances of accounts receivable and inventory; (2) the valuation of goodwill, indefinite-lived intangible assets and long-lived assets; (3) deferred tax assets; (4) environmental liabilities; (5) fair value of derivatives; and (6) post-employment benefit liabilities. Actual results may differ from the estimates and assumptions used in preparing the consolidated financial statements.
Cash and Cash Equivalents, Policy [Policy Text Block]  
Cash and Cash Equivalents
We consider short-term investments, which are highly liquid with original maturities of three months or less at date of purchase, to be cash equivalents.
Fair Value of Financial Instruments, Policy [Policy Text Block]
The carrying values of cash and cash equivalents, cash held at consolidated affiliated partnerships and restricted cash, accounts receivable, due from brokers, accounts payable, accrued expenses and other liabilities and due to brokers are deemed to be reasonable estimates of their fair values because of their short-term nature.
See Note 5, “Investments and Related Matters,” and Note 6, “Fair Value Measurements,” for a detailed discussion of our investments.
The fair value of our long-term debt is based on the quoted market prices for the same or similar issues or on the current rates offered to us for debt of the same remaining maturities. The carrying value and estimated fair value of our long-term debt as of June 30, 2012 was approximately $8.2 billion and $8.4 billion, respectively. The carrying value and estimated fair value of our long-term debt as of December 31, 2011 was each approximately $6.5 billion.
Fair Value of Financial Instruments
The carrying values of cash and cash equivalents, cash held at consolidated affiliated partnerships and restricted cash, accounts receivable, due from brokers, accounts payable, accrued expenses and other liabilities and due to brokers are deemed to be reasonable estimates of their fair values because of their short-term nature.
See Note 5, “Investments and Related Matters,” and Note 6, “Fair Value Measurements,” for a detailed discussion of our investments.
The fair value of our long-term debt is based on the quoted market prices for the same or similar issues or on the current rates offered to us for debt of the same remaining maturities. The carrying value and estimated fair value of our long-term debt as of December 31, 2011 was each approximately $6.5 billion. The carrying value and estimated fair value of our long-term debt as of December 31, 2010 was approximately $6.5 billion and $6.1 billion, respectively.
Fair Value Option for Financial Assets and Financial Liabilities
The 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 the FASB ASC. 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 6, “Fair Value Measurements.” Except for our Automotive, Railcar and Home Fashion segments, we apply the fair value option to our investments that would otherwise be accounted under the equity method.
Investments and non-financial assets and/or liabilities measured and reported at fair value are classified and disclosed in one of the following categories:
Level 1 - Quoted prices are available in active markets for identical investments as of the reporting date. The types of investments included in Level 1 include listed equities and listed derivatives. We do not adjust the quoted price for these investments, even in situations where we hold a large position.
Level 2 - Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined through the use of models or other valuation methodologies. Investments that are generally included in this category include corporate bonds and loans, less liquid and restricted equity securities and certain over-the-counter derivatives. The inputs and assumptions of our Level 2 investments are derived from market observable sources including: reported trades, broker/dealer quotes and other pertinent data.
Level 3 - Pricing inputs are unobservable for the investment and non-financial asset and/or liability and include situations where there is little, if any, market activity for the investment or non-financial asset and/or liability. The inputs into the determination of fair value require significant management judgment or estimation. Fair value is determined using comparable market transactions and other valuation methodologies, adjusted as appropriate for liquidity, credit, market and/or other risk factors.
In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the investment. Significant transfers, if any, between the levels within the fair value hierarchy are recognized at the beginning of the reporting period.
Trade and Other Accounts Receivable, Policy [Policy Text Block]  
Accounts Receivable, Net
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]  
Property, Plant and Equipment, Net
Land and construction-in-progress costs are stated at the lower of cost or net realizable value. Interest is capitalized on expenditures for long-term projects until a salable condition is reached. The interest capitalization rate is based on the interest rate on specific borrowings to fund the projects.
Buildings, furniture and equipment are stated at cost less accumulated depreciation unless declines in the values of the fixed assets are considered other than temporary, at which time the property is written down to net realizable value. Depreciation is principally computed using the straight-line method over the estimated useful lives of the particular property or equipment, as follows: buildings and improvements, four to 40 years; furniture, fixtures and equipment, one to 30 years. Leasehold improvements are amortized over the life of the lease or the life of the improvement, whichever is shorter.
Maintenance and repairs are charged to expense as incurred. The cost of additions and improvements is capitalized and depreciated over the remaining useful lives of the assets. The cost and accumulated depreciation of assets sold or retired are removed from our consolidated balance sheet, and any gain or loss is recognized in the year of disposal.
Real estate properties held for use or investment purposes, other than those accounted for under the financing method, are carried at cost less accumulated depreciation. Where declines in the values of the properties are determined to be other than temporary, the cost basis of the property is written down to net realizable value. A property is classified as held for sale at the time management determines that certain criteria have been met. Properties held for sale are carried at the lower of cost or net realizable value. Such properties are no longer depreciated and their results of operations are included in discontinued operations. If management determines that a property classified as held for sale no longer meets certain criteria, the property is reclassified as held for use.
Goodwill and Intangible Assets, Policy [Policy Text Block]  
Goodwill and Intangible Assets, Net
Goodwill and indefinite lived intangible assets primarily include trademarks and trade names acquired in acquisitions. For a complete discussion of the impairment of goodwill and indefinite intangible-lived assets related to our various segments, see Note 3, “Operating Units,” and Note 8, “Goodwill and Intangible Assets, Net.”
Accounting for the Impairment of Goodwill
We evaluate the carrying value of goodwill annually and between annual evaluations if events occur or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying amount. Such circumstances could include, but are not limited to: (1) a significant adverse change in legal factors or in business climate, (2) unanticipated competition, or (3) an adverse action or assessment by a regulator. Goodwill impairment testing involves a two-step process. Step 1 compares the fair value of our reporting units to their carrying values. If the fair value of the reporting unit exceeds its carrying value, no further analysis is necessary. The reporting unit fair value is based upon consideration of various valuation methodologies, including guideline transaction multiples, multiples of current earnings, and projected future cash flows discounted at rates commensurate with the risk involved. If the carrying amount of the reporting unit exceeds its fair value, Step 2 must be completed to quantify the amount of impairment. Step 2 calculates the implied fair value of goodwill by deducting the fair value of all tangible and intangible assets, excluding goodwill, of the reporting unit, from the fair value of the reporting unit as determined in Step 1. The implied fair value of goodwill determined in this step is compared to the carrying value of goodwill. If the implied fair value of goodwill is less than the carrying value of goodwill, an impairment loss, equal to the difference, is recognized.
Accounting for the Impairment of Intangible Assets
We evaluate the recoverability of identifiable indefinite lived intangible assets annually or more frequently if impairment indicators exist. The impairment analysis compares the estimated fair value of these assets to the related carrying value, and impairment charge is recorded for any excess of carrying value over estimated fair value. The estimated fair value is based on consideration of various valuation methodologies, including guideline transaction multiples, multiples of earnings, and projected future cash flows discounted at rates commensurate with risk involved.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]  
Accounting for the Impairment of Long-Lived Assets
We evaluate the realizability of our long-lived assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Inherent in the reviews of the carrying amounts of the above assets are various estimates, including the expected usage of the asset. Assets must be tested at the lowest level for which identifiable cash flows exist. Future cash flow estimates are, by their nature, subjective and actual results may differ materially from our estimates. If our ongoing estimates of future cash flows are not met, we may have to record impairment charges in future accounting periods to write the asset down to fair value. Our estimates of cash flows are based on the current regulatory, social and economic climates, recent operating information and budgets of the operating properties.
Asset Retirement Obligations, Policy [Policy Text Block]  
Accounting for Conditional Asset Retirement Obligations
We record conditional asset retirement obligations (“CARO”) in accordance with applicable U.S. GAAP. As defined in applicable U.S. GAAP, CARO refers to a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event. An entity is required to recognize a liability for the estimated fair value of a CARO when incurred if the fair value can be reasonably estimated. Our Automotive segment's primary asset retirement activities relate to the removal of hazardous building materials at its facilities. Our Automotive segment records the CARO liability when the amount can be reasonably estimated, typically upon the expectation that a facility may be closed or sold.
Pension and Other Postretirement Plans, Policy [Policy Text Block]  
Pension and Other Post-Employment Benefit Obligations
Pension and other post-employment benefit costs are dependent upon assumptions used in calculating such costs. These assumptions include discount rates, health care cost trends, expected returns on plan assets and other factors. In accordance with U.S. GAAP, actual results that differ from the assumptions used are accumulated and amortized over future periods and, accordingly, generally affect recognized expense and the recorded obligation in future periods.
Common control acquisitions and dispositions [Policy Text Block]  
Accounting for the Acquisition and Disposition of Entities under Common Control
Acquisitions of entities under common control are reflected in a manner similar to pooling of interests. The general partner's capital account is charged or credited for the difference between the consideration we pay for the entity and the related entity's basis prior to our acquisition. Net gains or losses of an acquired entity prior to its acquisition date are allocated to the general partner's capital account. 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 for the cumulative charges or credits relating to prior periods recorded at the time of our acquisition and then allocating the remaining gain or loss among the general and limited partners 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, the “Partnership Agreement”) (i.e., 99% to the limited partners and 1% to the general partner).
General partnership policy [Policy Text Block]  
General Partnership Interest of 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.
Generally, net earnings for U.S. federal income tax purposes are allocated 1% and 99% 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 (i.e., 99% to the limited partners and 1% to the general partner). 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.
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
Environmental expenditures are capitalized when such expenditures are expected to result in future economic benefits.
Environmental Liabilities
We recognize environmental liabilities when a loss is probable and reasonably estimable. Such accruals are estimated based on currently available information, existing technology and enacted laws and regulations. Such estimates are based primarily upon the estimated cost of investigation and remediation required and the likelihood that other potentially responsible parties will be able to fulfill their commitments at the sites where we may be jointly and severally liable with such parties. We regularly evaluate and revise estimates for environmental obligations based on expenditures against established reserves and the availability of additional information.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]  
Cash Held at Consolidated Affiliated Partnerships and Restricted Cash
Cash held at consolidated affiliated partnerships primarily consists of cash and cash equivalents held by the Onshore Fund and Offshore Master Funds (as defined herein) that, although not legally restricted, is not available to fund the general liquidity needs of the Investment segment or Icahn Enterprises. Restricted cash primarily relates to cash pledged and held for margin requirements on derivative transactions as well as cash related to securities sold short, not yet purchased. A portion of the cash at brokers is related to securities sold, not yet purchased; its use is therefore restricted until the securities are purchased. Securities sold, not yet purchased are collateralized by certain of the Investment Funds' investments in securities.
New Accounting Pronouncements, Policy [Policy Text Block]  
Recently Issued Accounting Standards
In May 2011, the FASB issued Accounting Standard Update (“ASU”) No. 2011-04, which amends ASC Topic 820, Fair Value Measurements and Disclosures . This ASU clarifies among other things, the intent about the application of existing fair value requirements, including those related to highest and best use concepts, and also expands the disclosure requirements for fair value measurements categorized within Level 3 of the fair value hierarchy. This ASU clarifies that a reporting entity should disclose quantitative information about significant unobservable inputs used in a fair value measurement that is categorized within Level 3 of the fair value hierarchy. Additionally, this ASU expands the disclosures for fair value measurements categorized within Level 3 where a reporting entity will be required to include a description of the valuation processes used and the sensitivity of the fair value measurement to changes in unobservable inputs and the interrelationships between those unobservable inputs, if any. Additional disclosure will also be required for any transfers between Level 1 and Level 2 of the fair value hierarchy of fair value measurements on a gross basis as well as additional disclosure of the level in the fair value hierarchy of assets and liabilities that are not recorded at fair value. For many of the requirements, the FASB does not intend for this ASU to result in a change in the application of the requirements in ASC Topic 820. The guidance in this ASU is to be applied prospectively and is effective during interim and annual periods beginning after December 15, 2011. Early adoption is not permitted. The adoption of this ASU will not have a material impact on our financial condition, results of operations or cash flows.
In June 2011, the FASB issued ASU No. 2011-05, which amends ASC Topic 220, Comprehensive Income . The guidance in this ASU is intended to increase the prominence of items reported in other comprehensive income in the financial statements by presenting the total of comprehensive income, the components of net income and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. This ASU eliminates the option to present the components of other comprehensive income as part of the statement of changes in stockholders' equity. The guidance in this ASU does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. Upon adoption, this update is to be applied retrospectively and is effective during interim and annual periods beginning after December 15, 2011. Early adoption is permitted. The adoption of this ASU will not have a material impact on our financial condition, results of operations or cash flows.
In September 2011, the FASB issued ASU No. 2011-08, which amends ASC Topic 350, Intangibles -  Goodwill and Other . The guidance in this ASU permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in ASC Topic 350. Under the amendments in this ASU, an entity is not required to calculate the fair value of a reporting unit unless the entity determines that it is more likely than not that its fair value is less than its carrying amount. The amendments are effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. Early adoption is permitted, including for annual and interim goodwill impairment tests performed as of a date before September 15, 2011, if an entity's financial statements for the most recent annual or interim period have not yet been issued or, for nonpublic entities, have not yet been made available for issuance. The adoption of this ASU will not have a material impact on our financial condition, results of operations or cash flows.
In December 2011, the FASB issued ASU No. 2011-11, which requires new disclosure requirements mandating that entities disclose both gross and net information about instruments and transactions eligible for offset in the statement of financial position as well as instruments and transactions subject to an agreement similar to a master netting arrangement. In addition, the standard requires disclosure of collateral received and posted in connection with master netting agreements or similar arrangements. This ASU is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The adoption of this ASU will not have a material impact on our financial condition, results of operations or cash flows.
In December 2011, the FASB issued ASU No. 2011-12, which defers certain provisions contained in ASU No. 2011-05 requiring the requirement to present components of reclassifications of other comprehensive income on the face of the income statement or in the notes to the financial statements. However, this deferral does not impact the other requirements contained in the new standard on comprehensive income as described above. This ASU is effective during interim and annual periods beginning after December 15, 2011. The adoption of this ASU will not have a material impact on our financial condition, results of operations or cash flows.
Energy Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Policy [Policy Text Block]
Revenue Recognition - Energy
For our Energy segment, revenues for products sold are recorded upon delivery of the products to customers, which is the point at which title is transferred, the customer has the assumed risk of loss, and when payment has been received or collection is reasonably assumed. Deferred revenue represents customer prepayments under contracts to guarantee a price and supply of nitrogen fertilizer in quantities expected to be delivered in the next 12 months in the normal course of business. Excise and other taxes collected from customers and remitted to governmental authorities are not included in reported revenues.
Non-monetary product exchanges and certain buy/sell crude oil transactions which are entered into in the normal course of business are included on a net cost basis in cost of goods sold in the consolidated statement of operations.
CVR also engages in trading activities, whereby it enters into agreements to purchase and sell refined products with third parties. CVR acts as a principal in these transactions, taking title to the products in purchases from counterparties, and accepting the risks and rewards of ownership. CVR records revenue for the gross amount of the sales transactions, and records cost of goods sold in our consolidated financial statements.
  
Inventory, Policy [Policy Text Block]
Inventories - Energy
Our 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 the first-in, first-out ("FIFO") cost, or market 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 market. The cost of inventories includes inbound freight costs
  
Property, Plant and Equipment, Planned Major Maintenance Activities, Policy [Policy Text Block]
Planned Major Maintenance Costs - Energy
The direct-expense method of accounting is used for planned major maintenance activities for our Energy segment. Maintenance costs are recognized as expense when maintenance services are performed. During the year ended December 31, 2011, the Coffeyville refinery completed the first phase of a two-phase major scheduled turnaround; during the first quarter of fiscal 2012, the Coffeyville refinery completed the second phase of the two-phase major scheduled turnaround. During the year ended December 31, 2010, the nitrogen fertilizer plant completed a major scheduled turnaround. Planned major maintenance costs are included in cost of goods sold in our consolidated financial statements when incurred. Planned major maintenance costs of $2 million were incurred for the period May 5, 2012 through June 30, 2012. Planned major maintenance activities for the nitrogen plant generally occur every two years. The required frequency of the maintenance varies by unit, for the refineries, but generally is every four to five years. The nitrogen fertilizer plants' and the Wynnewood refinery's next major maintenance activities are both scheduled for the fourth quarter of fiscal 2012.
  
Shipping and Handling Cost, Policy [Policy Text Block]
Shipping Costs - Energy
For our Energy segment, 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.
  
Investment Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Investment, Policy [Policy Text Block]  
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.
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 applicable General Partner.
Revenue Recognition, Policy [Policy Text Block]  
Investment
Revenue Recognition:   Effective April 1, 2011, the results of our Investment segment are primarily driven by the performance of the Investment Funds and our interests therein; the General Partners will no longer receive special profits interest allocations or incentive allocations. Prior to March 31, 2011, income from our Investment segment was principally derived from three sources: (1) special profits interest allocations; (2) incentive allocations; and (3) gains and losses from our interests in the Investment Funds.
Prior to March 31, 2011, incentive allocations generally ranged from 15% to 25% of the net profits (both realized and unrealized) generated by the Investment Funds and were generally subject to a “high watermark” (whereby the General Partners did not earn incentive allocations during a particular year even though the fund had a positive return in such year until losses in prior periods were recovered). In general, these allocations had been calculated and distributed to the General Partners annually other than incentive allocations earned as a result of investor redemption events during interim periods. For the period January 1, 2008 through March 31, 2011, the Investment Fund Limited Partnership Agreements provided that the applicable General Partner was eligible to receive a special profits interest allocation at the end of each calendar year from each applicable fee-paying capital account maintained at the Investment Fund. Special profits interest allocations ranged from 1.5% to 2.5% per annum and were allocated to the General Partners to the extent the Investment Funds had sufficient profits to cover such amounts.
Prior to April 1, 2011, the General Partners waived the special profits interest allocations and incentive allocations for our interest in the Investment Funds and Mr. Icahn's direct and indirect holdings and, in certain cases, for other investors. All of the special profits interest allocations and incentive allocations, if any, from certain consolidated entities are eliminated in consolidation; however, our share of the net income from the Investment Funds includes the amount of these eliminated allocations.
Sales Incentives:   Customer incentives are provided to major WPI customers. These incentives begin to accrue when a commitment has been made to the customer and are recorded as a reduction to sales.
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 statement 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.
Real Estate Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Incentives [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.
Other Segments and Icahn Enterprises Holdings [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Equity Method Investments, Policy [Policy Text Block]  
Except for our Investment segment, for those investments in which we own 50% or less but greater than 20%, we account for such investments using the equity method
Cost Method Investments, Policy [Policy Text Block]  
investments in affiliates of 20% or less are accounted for under the cost method.
Investment, Policy [Policy Text Block]  
Investments in equity and debt securities are classified as either trading or available-for-sale based upon whether we intend to hold the investment for the foreseeable future. Trading securities are valued at quoted market value at each balance sheet date with the unrealized gains or losses reflected in the consolidated statements of operations. Available-for-sale securities are carried at fair value on our balance sheet. Unrealized holding gains and losses on available-for-sale securities are excluded from earnings and reported as a separate component of partners' equity and when sold are reclassified out of partners' equity to the consolidated statements of operations. For purposes of determining gains and losses, the cost of securities is based on specific identification.
A decline in the market value of any available-for-sale security below cost that is deemed to be other than temporary results in an impairment that is charged to earnings and the establishment of a new cost basis for the investment. Dividend income is recorded when declared and interest income is recognized when earned.
Foreign Currency Transactions and Translations Policy [Policy Text Block]  
Foreign Currency Translation
Exchange 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 as the earnings of the subsidiaries are considered to be permanently reinvested.
Automotive, Railcar, Food Packaging and Home Fashion Segments [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Inventory, Policy [Policy Text Block]  
Automotive, Railcar, Food Packaging, and Home Fashion Segment Inventories.   Our Automotive, Railcar, 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. The cost of manufactured goods includes the cost of materials, direct labor and manufacturing overhead. Our Automotive, Railcar, 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.
Metals Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Policy [Policy Text Block]  
Revenue Recognition:   PSC Metals' 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.
Inventory, Policy [Policy Text Block]  
Metals Inventories.   Inventories at our Metals segment are stated at the lower of cost or market. Cost is determined using the average cost method. The production and accounting process utilized by the 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.
Automotive Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Policy [Policy Text Block]  
Revenue Recognition:   Federal-Mogul records sales when products are shipped and title has transferred to the customer, the sales price is fixed and determinable, and the collectability of revenue is reasonably assured. Accruals for sales returns and other allowances are provided at the time of shipment based upon past experience. Adjustments to such returns and allowances are made as new information becomes available.
Shipping and Handling Cost, Policy [Policy Text Block]  
Shipping and Handling Costs:   Federal-Mogul recognizes shipping and handling costs as incurred as a component of cost of goods sold in the consolidated statements of operations.
Engineering and tooling [Policy Text Block]  
Engineering and Tooling Costs:   Pre-production tooling and engineering costs that Federal-Mogul will not own and that will be used in producing products under long-term supply arrangements are expensed as incurred unless the supply arrangement provides Federal-Mogul with the noncancelable right to use the tools, or the reimbursement of such costs is agreed to by the customer. Pre-production tooling costs that are owned by Federal-Mogul are capitalized as part of machinery and equipment, and are depreciated over the shorter of the tools' expected life or the duration of the related program.
Research and Development Expense, Policy [Policy Text Block]  
Research and Development:   Federal-Mogul expenses research and development (“R&D”) costs and costs associated with advertising and promotion as incurred. R&D expense, including product engineering and validation costs, was $172 million, $156 million and $140 million for fiscal 2011, fiscal 2010 and fiscal 2009, respectively. As a percentage of original equipment manufacturer and servicers (“OE”) sales, R&D expense was 3.8%, 4.0% and 4.7% for fiscal 2011, fiscal 2010 and fiscal 2009, respectively.
Restructuring [Policy Text Block]  
Restructuring:   Federal-Mogul's restructuring costs are comprised of two types: employee costs (contractual termination benefits) and facility closure costs. Termination benefits are recorded when it is probable that employees will be entitled to benefits and the amounts can be reasonably estimated. Estimates of termination benefits are based on the frequency of past termination benefits, the similarity of benefits under the current plan and prior plans, and the existence of statutory required minimum benefits. Facility closure and other costs are recorded when the liability is incurred.
Revenue Recognition, Incentives [Policy Text Block]  
Rebates/Sales Incentives:   Federal-Mogul accrues for rebates pursuant to specific arrangements with certain of its customers, primarily in the aftermarket. Rebates generally provide for price reductions based upon the achievement of specified purchase volumes and are recorded as a reduction of sales as earned by such customers.
Gaming Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Policy [Policy Text Block]  
Gaming
Revenue Recognition and Promotional Allowances:   Casino revenue represents the difference between wins and losses from gaming activities. Room, food and beverage and other operating revenues are recognized at the time the goods or services are provided. Tropicana collects taxes from customers at the point of sale on transactions subject to sales and other taxes. Revenues are recorded net of any taxes collected. The majority of our casino revenue is counted in the form of cash and chips and, therefore, is not subject to any significant or complex estimation. The retail value of rooms, food and beverage and other services provided to customers on a complimentary basis is included in gross revenues and then deducted as promotional allowances.
Railcar Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Policy [Policy Text Block]  
Revenue recognition:   Revenues from railcar sales are recognized following completion of manufacturing, inspection, customer acceptance and title transfer, which is when the risk for any damage or loss with respect to the railcars passes to the customer. Revenues from railcar leasing are recognized on a straight-line basis per the terms of the lease. Revenues from railcar and industrial components are recorded at the time of product shipment, in accordance with ARI's contractual terms. Revenue for railcar maintenance services is recognized upon completion and shipment of railcars from ARI's plants. ARI does not currently bundle railcar service contracts with new railcar sales. Revenue for fleet management services is recognized as performed.
Revenues related to consulting type contracts are accounted for under the proportional performance method. Profits expected to be realized on these contracts are based on the total contract revenues and costs based on the estimate of the percentage of project completion. Revenues recognized in excess of amounts billed are recorded to unbilled revenues and included in other assets on the consolidated balance sheets. Billings in excess of revenues recognized on in-progress contracts are recorded to unbilled costs and included in accrued expenses and other liabilities on the consolidated balance sheets. These estimates are reviewed and revised periodically throughout the term of the contracts and any adjustments are recorded on a cumulative basis in the period the revisions are made.
Food Packaging Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Policy [Policy Text Block]  
Revenue Recognition:   Revenues are recognized at the time products are shipped to the customer, under F.O.B shipping point or F.O.B port terms. 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.
Home Fashion Segment [Member]
    
Schedule of Significant Accounting Policies [Line Items]    
Revenue Recognition, Policy [Policy Text Block]  
Revenue Recognition:   WPI records revenue when the following criteria are met: persuasive evidence of an arrangement exists, delivery has occurred, the price to the customer is fixed and determinable and collectability is reasonably assured. Unless otherwise agreed in writing, title and risk of loss pass from WPI to the customer when WPI 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]  
Sales Incentives:   Customer incentives are provided to major WPI customers. These incentives begin to accrue when a commitment has been made to the customer and are recorded as a reduction to sales.