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Subsequent Events (Details) (USD $) | 12 Months Ended | 0 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended |  |  | 0 Months Ended | 1 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended |  | 1 Months Ended |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Feb. 19, 2013 CVR Energy, Inc. [Member] | Dec. 31, 2012 Icahn Enterprises Holdings [Member] | Dec. 31, 2011 Icahn Enterprises Holdings [Member] | Dec. 31, 2010 Icahn Enterprises Holdings [Member] | Sep. 30, 2012 Railcar Segment [Member] | Feb. 13, 2013 Railcar Segment [Member] Term Loan [Member] | Feb. 01, 2013 Railcar Segment [Member] Term Loan [Member] | Dec. 31, 2012 Railcar Segment [Member] Senior unsecured notes [Member] | Jan. 30, 2013 Issuance of equity interets in subsidiary [Member] Energy Segment [Member] CVR Refining, LP [Member] | Jan. 23, 2013 Issuance of equity interets in subsidiary [Member] Energy Segment [Member] CVR Refining, LP [Member] | Feb. 11, 2013 Dividend declared by subsidiary [Member] CVR Energy, Inc. [Member] | Jan. 25, 2013 Repayment of Debt [Member] Variable Rate Senior Unsecured Convertible Notes [Member] Senior unsecured notes [Member] | Jan. 25, 2013 Repayment of Debt [Member] Variable Rate Senior Unsecured Convertible Notes [Member] Senior unsecured notes [Member] Icahn Enterprises Holdings [Member] | Jan. 31, 2013 Repayment of Debt [Member] Railcar Segment [Member] | Jul. 31, 2012 Depositary Units [Member] | Apr. 30, 2012 Depositary Units [Member] | Feb. 28, 2012 Depositary Units [Member] | Nov. 02, 2012 Depositary Units [Member] Dividend Declared [Member] | Dec. 31, 2012 Principal Owners and Affiliates [Member] | Feb. 11, 2013 Limited partners Depositary Units [Member] Dividend Declared [Member] | Dec. 31, 2012 Limited partners Depositary Units [Member] Dividend Declared [Member] | Feb. 28, 2013 Limited partners Depositary Units [Member] Issuance of Equity [Member] | Mar. 13, 2013 Limited partners Principal Owners and Affiliates [Member] Depositary Units [Member] | Mar. 13, 2013 Limited partners Principal Owners and Affiliates [Member] Depositary Units [Member] Issuance of Equity [Member] | Feb. 28, 2013 General partner Issuance of Equity [Member] | Apr. 06, 2010 Term Loan [Member] Energy Segment [Member] CVR Second Lien Notes [Member] CVR Issuers [Member] | Jan. 31, 2013 Term Loan [Member] Issuance of equity interets in subsidiary [Member] Energy Segment [Member] CVR Second Lien Notes [Member] CVR Issuers [Member] | Apr. 06, 2010 Term Loan [Member] Issuance of equity interets in subsidiary [Member] Energy Segment [Member] CVR Second Lien Notes [Member] CVR Issuers [Member]
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution made to limited partner depositary unitholders, cash distributions declared, per unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.10 | $ 0.10 | $ 0.10 | $ 0.10 |  | $ 1.00 | $ 1.40 |  |  |  |  |  |  |
Policy for Distribution to Member or Limited Partner, Annual Distributions Declared, Per Unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.40 |  |  |  |  |  |  |
Distribution made to limited partner depositary unitholders, depositary unit distributions declared, per unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.25 |  |  | $ 1.00 |  |  |  |  |  |  |
Future distribution policy amount, annualized, per unit |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.00 |  |  |  |  |  |  |  |  | $ 4.00 |  |  |  |  |  |  |  |
Affiliate ownership interest in Icahn Enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 93.20% |  |  |  | 90.50% | 90.50% |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,174,604 |  |  |  |  |  |
Equity Issuance, Per Share Amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 25.00 |  |  |  |  |  |  |  |  |  |  |  | $ 63.00 |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 193,000,000 |  |  |  |  |  |
Partnership contributions | 513,000,000 | 0 | 6,000,000 |  | 513,000,000 | 0 | 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 |  |  |
Underwriter option to purchase additional depositary units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 476,191 |  |  |  |  |  |
Subsidiary or Equity Method Investee, Cumulative Number of Shares Issued for All Transactions |  |  |  |  |  |  |  |  |  |  |  | 3,600,000 | 24,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest |  |  |  |  |  |  |  |  |  |  |  | 90,000,000 | 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  |  | 100,000,000 |  |  |  |  |  |  | 600,000,000 | 44,000,000 | 175,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | 253,000,000 |
Interest rate, long-term debt |  |  |  |  |  |  |  |  |  |  | 7.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.875% |  | 10.875%
Carrying value of debt repaid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 223,000,000 |
Redemption Premium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,000,000 |
Interest Paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |
Future distribution policy amount, quarterly, per unit |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.75 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution declared by subsidiary, per share |  |  |  | $ 5.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Dividends Received |  |  |  | 478,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Draw on term loan, first draw |  |  |  |  |  |  |  |  |  | 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from sale of senior unsecured notes |  |  |  |  |  |  |  |  | 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unused Borrowing Capacity, Amount |  |  |  |  |  |  |  |  |  | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage of principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |

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