Related Party Transactions (Details) (USD $)	9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended			9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Sep. 30, 2012 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Sep. 30, 2013 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Sep. 30, 2012 Icahn Capital [Member] Investment Funds [Member] Expense sharing agreement [Member]	Sep. 30, 2013 Investment Funds [Member] Principal Owners and Affiliates [Member]	Sep. 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]	Sep. 30, 2013 ARI [Member]	Sep. 30, 2013 ARI [Member] ACF [Member] Railcar Sales [Member]	Sep. 30, 2013 ARI [Member] ACF [Member] Railcar Sales [Member]	Sep. 30, 2012 ARI [Member] ARL [Member] Railcar Sales [Member]	Sep. 30, 2012 ARI [Member] ARL [Member] Railcar Sales [Member]	Sep. 30, 2013 ARI [Member] ARL [Member] Railcar services [Member]	Sep. 30, 2012 ARI [Member] ARL [Member] Railcar services [Member]	Sep. 30, 2013 ARI [Member] ARL [Member] Railcar services [Member]	Sep. 30, 2012 ARI [Member] ARL [Member] Railcar services [Member]	Sep. 30, 2013 AEP Leasing [Member] ACF [Member]	Sep. 30, 2013 AEP Leasing [Member] ACF [Member] Railcar Sales [Member]	Sep. 30, 2013 AEP Leasing [Member] ACF [Member] Railcar Sales [Member]	Sep. 30, 2013 AEP Leasing [Member] ACF [Member] Purchase of railcars [Member]	Oct. 02, 2013 Railcar Segment [Member] New ARL [Member]
Related Party Transaction [Line Items]
Investment in funds							$ 45,000,000
Non-cash investment segment contribution	185,000,000	0
Related party transaction, balance								4,500,000,000	3,500,000,000
Expenses charged by related party			40,000,000	6,000,000	79,000,000	17,000,000
Related Party Transaction, Other Revenues from Transactions with Related Party											3,000,000	7,000,000	34,000,000	45,000,000	4,000,000	6,000,000	13,000,000	17,000,000
Unrecorded unconditional purchase obligation, Minimum quantity required																						1,050
Related Party Transaction, Expenses from Transactions with Related Party																				20,000,000	25,000,000
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
Percentage of equity ownership in subsidiary										55.60%													75.00%