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
	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%