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Related Party Transactions (Details) (USD $) | 3 Months Ended |  |  |  |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 ARL [Member] | Mar. 31, 2013 Icahn Capital [Member] Investment Funds [Member] Expense Sharing Agreement [Member] | Mar. 31, 2012 Icahn Capital [Member] Investment Funds [Member] Expense Sharing Agreement [Member] | Mar. 31, 2013 Investment Funds [Member] Principal Owners and Affiliates [Member] | Dec. 31, 2012 Investment Funds [Member] Principal Owners and Affiliates [Member] | Mar. 31, 2013 ARI [Member] ARL [Member] | Dec. 31, 2012 ARI [Member] ARL [Member] | Mar. 31, 2013 ARI [Member] ARL [Member] Railcar Services [Member] | Mar. 31, 2012 ARI [Member] ARL [Member] Railcar Services [Member]
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Related party investment in Funds |  |  |  | $ 3,900,000,000 | $ 3,500,000,000 |  |  |  |
Expenses charged by related party |  | 27,000,000 | 3,000,000 |  |  |  |  |  |
Term of service agreement (in years) | 3 years |  |  |  |  |  |  |  |
Renewal period of service agreement (in years) | 1 year |  |  |  |  |  |  |  |
Written notice requirment period to terminate services agreement (in days) | 60 days |  |  |  |  |  |  |  |
Term of railcar management agreement (in years) | 5 years |  |  |  |  |  |  |  |
Revenue from related party |  |  |  |  |  |  |  | 5,000,000 | 5,000,000
Accounts receivable due from related parties |  |  |  |  |  | $ 3,000,000 | $ 2,000,000 |  |

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