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Related Party Transactions (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended			3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended			3 Months Ended	6 Months Ended
	Jun. 30, 2013 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Jun. 30, 2012 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Jun. 30, 2013 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Jun. 30, 2012 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Jun. 30, 2013 Investment Funds [Member] Principal Owners and Affiliates [Member]	Jun. 30, 2013 Investment Funds [Member] Principal Owners and Affiliates [Member] Investment in Funds [Member]	Dec. 31, 2012 Investment Funds [Member] Principal Owners and Affiliates [Member] Investment in Funds [Member]	Jun. 30, 2013 ARI [Member] ACF [Member] Railcar Sales [Member]	Jun. 30, 2013 ARI [Member] ACF [Member] Railcar Sales [Member]	Jun. 30, 2013 ARI [Member] ARL [Member]	Dec. 31, 2012 ARI [Member] ARL [Member]	Jun. 30, 2012 ARI [Member] ARL [Member] Railcar Sales [Member]	Jun. 30, 2012 ARI [Member] ARL [Member] Railcar Sales [Member]	Jun. 30, 2013 ARI [Member] ARL [Member] Railcar services [Member]	Jun. 30, 2012 ARI [Member] ARL [Member] Railcar services [Member]	Jun. 30, 2013 ARI [Member] ARL [Member] Railcar services [Member]	Jun. 30, 2012 ARI [Member] ARL [Member] Railcar services [Member]	Jun. 30, 2013 AEP Leasing [Member] ACF [Member]	Jun. 30, 2013 AEP Leasing [Member] ACF [Member] Railcar Sales [Member]	Jun. 30, 2013 AEP Leasing [Member] ACF [Member] Railcar Sales [Member]	Jun. 30, 2013 AEP Leasing [Member] ACF [Member] Purchase of railcars [Member]
Related Party Transaction [Line Items]
Investment in funds					$ 45,000,000
Related party transaction, balance						3,800,000,000	3,500,000,000
Expenses charged by related party	13,000,000	7,000,000	40,000,000	11,000,000
Related Party Transaction, Other Revenues from Transactions with Related Party								3,000,000	3,000,000			11,000,000	11,000,000	5,000,000	6,000,000	9,000,000	11,000,000
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required																					1,050
Related Party Transaction, Expenses from Transactions with Related Party																			5,000,000	5,000,000
Unrecorded Unconditional Purchase Obligation																					150,000,000
Option to purchase additinal railcars, number of cars																		500
Option to purchase additional railcars																		70,000,000
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
Accounts receivable due from related parties										$ 4,000,000	$ 2,000,000

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