Related Party Transactions	3 Months Ended
Mar. 31, 2013
Related Party Transaction [Line Items]
Related Party Transactions	Related Party Transactions. Our amended and restated agreement of limited partnership expressly permits us to enter into transactions with our general partner or any of its affiliates, including, without limitation, buying or selling properties from or to our general partner and any of its affiliates and borrowing and lending money from or to our general partner and any of its affiliates, subject to limitations contained in our partnership agreement and the Delaware Revised Uniform Limited Partnership Act. The indentures governing our indebtedness contain certain covenants applicable to transactions with affiliates. Investment Mr. Icahn, along with his affiliates (excluding Icahn Enterprises and Icahn Enterprises Holdings), makes investments in the Investment Funds. As of March 31, 2013 and December 31, 2012, the total fair market value of investments in the Investment Funds made by Mr. Icahn and his affiliates was approximately $3.9 billion and $3.5 billion, respectively. Effective April 1, 2011, based on an expense-sharing arrangement, certain expenses borne by Icahn Capital are reimbursed by the Investment Funds, generally when such expenses are paid. Such expenses relate to the operation, administration and investment activities of Icahn Capital for the benefit of the Investment Funds (including salaries, benefits and rent) and shall be allocated pro rata in accordance with each investor's capital accounts in the Investment Funds. For the three months ended March 31, 2013 and 2012, $27 million and $3 million, respectively, was allocated to the Investment Funds based on this expense-sharing arrangement. Railcar Agreements with American Railcar Leasing LLC Effective April 16, 2011, ARI entered into a fleet services agreement ("Railcar Services Agreement") with ARL, a company controlled by Mr. Icahn, for a term of three years that will automatically renew for additional one-year periods unless either party provides at least 60 days written prior notice of termination. As stipulated in the Railcar Services Agreement, ARI provides railcar repair, engineering, administrative and other services, on an as needed basis, for ARL's lease fleet at mutually agreed-upon prices. Railcar services revenues, included in other revenues from operations in our consolidated statements of operations, recorded by ARI were $5 million under this agreement for each of the three months ended March 31, 2013 and 2012, respectively. The terms and pricing on services to related parties are not less favorable to ARI than the terms and pricing on services provided to unaffiliated third parties. The Railcar Services Agreement was unanimously approved by the independent directors of ARI's audit committee on the basis that the terms were no less favorable than those terms that could have been obtained in a comparable transaction with an unaffiliated third party. On February 29, 2012, ARI entered into a railcar management agreement (the "ARI Railcar Management Agreement") with ARL, pursuant to which ARI engaged ARL to sell or lease ARI's railcars in certain markets, subject to the terms and conditions of the ARI Railcar Management Agreement. The ARI Railcar Management Agreement was effective as of January 1, 2011, will continue through December 31, 2015 and may be renewed upon written agreement by both parties. In December 2012, a subsidiary of ARI entered into a similar agreement with ARL with a term of five years. On August 30, 2012, AEP Leasing entered into a railcar management agreement with ARL (the "AEP Railcar Management Agreement" and together with the ARI Railcar Management Agreement, the "Railcar Management Agreements"), pursuant to which AEP Leasing engaged ARL to sell or lease AEP Leasing's railcars in certain markets, subject to the terms and conditions of the AEP Railcar Management Agreement. The AEP Railcar Management Agreement was effective as of August 30, 2012, will continue through December 31, 2022 and may be renewed upon written agreement by both parties. The Railcar Management Agreements also provide that ARL will manage ARI's and AEP Leasing's leased railcars including arranging for services, such as repairs or maintenance, as deemed necessary. Subject to the terms and conditions of the agreement, ARL will receive, in respect of leased railcars, a fee consisting of a lease origination fee and a management fee based on the lease revenues, and, in respect of railcars sold by ARL, sales commissions. The ARI Railcar Management Agreement was unanimously approved by ARI's special committee and Icahn Enterprises' audit committee who were advised by independent counsel and an independent financial advisor. The AEP Railcar Management Agreement was unanimously approved by Icahn Enterprises' audit committee was advised by independent counsel and an independent financial advisor. Each of the Railcar Management Agreements was approved by the applicable special or audit committees on the basis that the terms of the Railcar Management Agreements were not materially less favorable than those terms that could have been obtained in a comparable transaction with an unaffiliated third party. Combined fees incurred by ARI and AEP Leasing in connection with the Railcar Management Agreements were immaterial for each of the three months ended March 31, 2013 and 2012. As of March 31, 2013 and December 31, 2012, our Railcar segment had accounts receivable of $3 million and $2 million, respectively, due from ARL. These amounts are included in other assets in our consolidated balance sheets. Insight Portfolio Group LLC (formerly known as Icahn Sourcing, LLC) Icahn Sourcing, LLC ("Icahn Sourcing") is an entity formed and controlled by Mr. Icahn in order to maximize the potential buying power of a group of entities with which Mr. Icahn has a relationship in negotiating with a wide range of suppliers of goods, services and tangible and intangible property at negotiated rates. Icahn Enterprises was a member of the buying group in 2012. Prior to December 31, 2012 Icahn Enterprises did not pay Icahn Sourcing any fees or other amounts with respect to the buying group arrangement. In December, 2012, Icahn Sourcing advised Icahn Enterprises that effective January 1, 2013 it would restructure its ownership and change its name to Insight Portfolio Group LLC (“Insight Portfolio Group”). In connection with the restructuring, Icahn Enterprises Holdings acquired a minority equity interest in Insight Portfolio Group and agreed to pay a portion of Insight Portfolio Group's operating expenses in 2013. In addition to the minority equity interest held by Icahn Enterprises Holdings, certain subsidiaries of Icahn Enterprises Holdings, including Federal-Mogul, CVR, Tropicana, ARI, Viskase, PSC Metals and WPH also acquired minority equity interests in Insight Portfolio Group and agreed to pay a portion of Insight Portfolio Group's operating expenses in 2013. A number of other entities with which Mr. Icahn has a relationship also acquired equity interests in Insight Portfolio Group and also agreed to pay certain of Insight Portfolio Group's operating expenses in 2013.

Related Party Transactions.

Our amended and restated agreement of limited partnership expressly permits us to enter into transactions with our general partner or any of its affiliates, including, without limitation, buying or selling properties from or to our general partner and any of its affiliates and borrowing and lending money from or to our general partner and any of its affiliates, subject to limitations contained in our partnership agreement and the Delaware Revised Uniform Limited Partnership Act. The indentures governing our indebtedness contain certain covenants applicable to transactions with affiliates.

Investment

Mr. Icahn, along with his affiliates (excluding Icahn Enterprises and Icahn Enterprises Holdings), makes investments in the Investment Funds. As of March 31, 2013 and December 31, 2012, the total fair market value of investments in the Investment Funds made by Mr. Icahn and his affiliates was approximately $3.9 billion and $3.5 billion, respectively.

Effective April 1, 2011, based on an expense-sharing arrangement, certain expenses borne by Icahn Capital are reimbursed by the Investment Funds, generally when such expenses are paid. Such expenses relate to the operation, administration and investment activities of Icahn Capital for the benefit of the Investment Funds (including salaries, benefits and rent) and shall be allocated pro rata in accordance with each investor's capital accounts in the Investment Funds. For the three months ended March 31, 2013 and 2012, $27 million and $3 million, respectively, was allocated to the Investment Funds based on this expense-sharing arrangement.

Railcar

Agreements with American Railcar Leasing LLC

Effective April 16, 2011, ARI entered into a fleet services agreement ("Railcar Services Agreement") with ARL, a company controlled by Mr. Icahn, for a term of three years that will automatically renew for additional one-year periods unless either party provides at least 60 days written prior notice of termination. As stipulated in the Railcar Services Agreement, ARI provides railcar repair, engineering, administrative and other services, on an as needed basis, for ARL's lease fleet at mutually agreed-upon prices. Railcar services revenues, included in other revenues from operations in our consolidated statements of operations, recorded by ARI were $5 million under this agreement for each of the three months ended March 31, 2013 and 2012, respectively. The terms and pricing on services to related parties are not less favorable to ARI than the terms and pricing on services provided to unaffiliated third parties. The Railcar Services Agreement was unanimously approved by the independent directors of ARI's audit committee on the basis that the terms were no less favorable than those terms that could have been obtained in a comparable transaction with an unaffiliated third party.

On February 29, 2012, ARI entered into a railcar management agreement (the "ARI Railcar Management Agreement") with ARL, pursuant to which ARI engaged ARL to sell or lease ARI's railcars in certain markets, subject to the terms and conditions of the ARI Railcar Management Agreement. The ARI Railcar Management Agreement was effective as of January 1, 2011, will continue through December 31, 2015 and may be renewed upon written agreement by both parties. In December 2012, a subsidiary of ARI entered into a similar agreement with ARL with a term of five years.

On August 30, 2012, AEP Leasing entered into a railcar management agreement with ARL (the "AEP Railcar Management Agreement" and together with the ARI Railcar Management Agreement, the "Railcar Management Agreements"), pursuant to which AEP Leasing engaged ARL to sell or lease AEP Leasing's railcars in certain markets, subject to the terms and conditions of the AEP Railcar Management Agreement. The AEP Railcar Management Agreement was effective as of August 30, 2012, will continue through December 31, 2022 and may be renewed upon written agreement by both parties.

The Railcar Management Agreements also provide that ARL will manage ARI's and AEP Leasing's leased railcars including arranging for services, such as repairs or maintenance, as deemed necessary. Subject to the terms and conditions of the agreement, ARL will receive, in respect of leased railcars, a fee consisting of a lease origination fee and a management fee based on the lease revenues, and, in respect of railcars sold by ARL, sales commissions. The ARI Railcar Management Agreement was unanimously approved by ARI's special committee and Icahn Enterprises' audit committee who were advised by independent counsel and an independent financial advisor. The AEP Railcar Management Agreement was unanimously approved by Icahn Enterprises' audit committee was advised by independent counsel and an independent financial advisor. Each of the Railcar Management Agreements was approved by the applicable special or audit committees on the basis that the terms of the Railcar Management Agreements were not materially less favorable than those terms that could have been obtained in a comparable transaction with an unaffiliated third party. Combined fees incurred by ARI and AEP Leasing in connection with the Railcar Management Agreements were immaterial for each of the three months ended March 31, 2013 and 2012.

As of March 31, 2013 and December 31, 2012, our Railcar segment had accounts receivable of $3 million and $2 million, respectively, due from ARL. These amounts are included in other assets in our consolidated balance sheets.

Insight Portfolio Group LLC (formerly known as Icahn Sourcing, LLC)

Icahn Sourcing, LLC ("Icahn Sourcing") is an entity formed and controlled by Mr. Icahn in order to maximize the potential buying power of a group of entities with which Mr. Icahn has a relationship in negotiating with a wide range of suppliers of goods, services and tangible and intangible property at negotiated rates. Icahn Enterprises was a member of the buying group in 2012. Prior to December 31, 2012 Icahn Enterprises did not pay Icahn Sourcing any fees or other amounts with respect to the buying group arrangement.

In December, 2012, Icahn Sourcing advised Icahn Enterprises that effective January 1, 2013 it would restructure its ownership and change its name to Insight Portfolio Group LLC (“Insight Portfolio Group”). In connection with the restructuring, Icahn Enterprises Holdings acquired a minority equity interest in Insight Portfolio Group and agreed to pay a portion of Insight Portfolio Group's operating expenses in 2013. In addition to the minority equity interest held by Icahn Enterprises Holdings, certain subsidiaries of Icahn Enterprises Holdings, including Federal-Mogul, CVR, Tropicana, ARI, Viskase, PSC Metals and WPH also acquired minority equity interests in Insight Portfolio Group and agreed to pay a portion of Insight Portfolio Group's operating expenses in 2013. A number of other entities with which Mr. Icahn has a relationship also acquired equity interests in Insight Portfolio Group and also agreed to pay certain of Insight Portfolio Group's operating expenses in 2013.