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Related Party Transactions (Details) (USD $) | 12 Months Ended |  |  |  | 0 Months Ended | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Icahn Capital [Member] Investment Funds [Member] Expense Sharing Agreement [Member] | Dec. 31, 2012 Icahn Capital [Member] Investment Funds [Member] Expense Sharing Agreement [Member] | Dec. 31, 2011 Icahn Capital [Member] Investment Funds [Member] Expense Sharing Agreement [Member] | Dec. 06, 2013 Federal-Mogul [Member] Principal Owners and Affiliates [Member] | Aug. 24, 2012 IEP Energy [Member] Principal Owners and Affiliates [Member] | May 07, 2012 IEP Energy [Member] Principal Owners and Affiliates [Member] | Oct. 29, 2004 ARL [Member] Principal Owners and Affiliates [Member] | Dec. 31, 2013 ARL [Member] Principal Owners and Affiliates [Member] | Dec. 31, 2012 ARL [Member] Principal Owners and Affiliates [Member] | Dec. 31, 2011 ARL [Member] Principal Owners and Affiliates [Member] | Oct. 31, 2013 ARL [Member] Principal Owners and Affiliates [Member] | Oct. 24, 2004 ARL [Member] Principal Owners and Affiliates [Member] | Dec. 31, 2013 Investment Funds [Member] Principal Owners and Affiliates [Member] | Dec. 31, 2012 Investment Funds [Member] Principal Owners and Affiliates [Member] | Dec. 31, 2013 AEP Leasing [Member] ACF [Member] | Dec. 31, 2013 Railcar Sales [Member] ARI [Member] ACF [Member] | Dec. 31, 2013 Railcar Sales [Member] AEP Leasing [Member] ACF [Member] | Dec. 31, 2013 Purchase of railcars [Member] AEP Leasing [Member] ACF [Member] | Dec. 31, 2013 Investment Segment [Member] Koala [Member] | Feb. 28, 2014 Principal Owners and Affiliates [Member] | Dec. 31, 2013 Principal Owners and Affiliates [Member] | May 07, 2012 Principal Owners and Affiliates [Member] IEP Energy [Member]
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in funds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,000,000 |  |  |  |  |  |  |  |  |
Non-cash Investment segment contribution (derivative liability shares transferred) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,700,000 |  |  |
Non-cash investment segment contribution | 185,000,000 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 185,000,000 |  |  |
Investments, fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,700,000,000 | 3,500,000,000 |  |  |  |  |  |  |  |
Percentage fair value of investments in Funds that is attributable to Mr. Icahn |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56.00% | 60.00% |  |  |  |  |  |  |  |
Expenses charged by related party |  |  |  | 113,000,000 | 23,000,000 | 21,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Funding Commitment, Total Amount |  |  |  |  |  |  | 1,600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital contributions by non-controlling interests in subsidiary (Shares) |  |  |  |  |  |  |  | 3,288,371 | 4,566,546 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital contributions by non-controlling interests in subsidiary |  |  |  |  |  |  |  |  | 137,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable, Related Parties |  |  |  |  |  |  |  |  |  |  |  |  |  | 171,000,000 | 165,000,000 |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Rate |  |  |  |  |  |  |  |  |  | 1.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Income, Related Party |  |  |  |  |  |  |  |  |  |  | 6,000,000 | 8,000,000 | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Affiliate ownership interest in Icahn Enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 88.00% | 87.90% | 6.40%
Related Party Transaction, Other Revenues from Transactions with Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,000,000 |  |  |  |  |  |
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,050 |  |  |  |
Unrecorded Unconditional Purchase Obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000,000 |  |  |  |
Option to purchase additinal railcars, number of cars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 |  |  |  |  |  |  |
Option to purchase additional railcars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 70,000,000 |  |  |  |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 57,000,000 |  |  |  |  |

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