Debt Table (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Debt	$ 9,295	$ 9,873
Automotive Segment [Member]
Debt Instrument [Line Items]
Debt	2,586	2,805
Energy Segment [Member]
Debt Instrument [Line Items]
Debt	676	926
Gaming Segment [Member]
Debt Instrument [Line Items]
Debt	298	171
Railcar Segment [Member]
Debt Instrument [Line Items]
Debt	1,448	1,600
Food Packaging Segment [Member]
Debt Instrument [Line Items]
Debt	217	215
Real Estate Segment [Member]
Debt Instrument [Line Items]
Debt	51	71
Home Fashion Segment [Member]
Debt Instrument [Line Items]
Debt	0	0
Senior unsecured notes [Member] | 2020 Notes [Member]
Debt Instrument [Line Items]
Debt	493	0
Senior unsecured notes [Member] | 8% senior unsecured notes due 2018 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	2,473	2,476
Senior unsecured notes [Member] | 7.75% senior unsecured notes due 2016 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,050	1,050
Senior unsecured notes [Member] | Senior unsecured variable rate convertible notes due 2013 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	0	556
Debt facilities [Member] | Automotive Segment [Member]
Debt Instrument [Line Items]
Debt	2,494	2,738
Debt facilities [Member] | Energy Segment [Member]
Debt Instrument [Line Items]
Debt	500	749
Debt facilities [Member] | Railcar Segment [Member]
Debt Instrument [Line Items]
Debt	1,448	1,600
Secured credit facilities [Member] | Energy Segment [Member]
Debt Instrument [Line Items]
Debt	125	125
Secured credit facilities [Member] | Gaming Segment [Member]
Debt Instrument [Line Items]
Debt	298	171
Secured credit facilities [Member] | Food Packaging Segment [Member]
Debt Instrument [Line Items]
Debt	215	214
Mortgages payable [Member] | Real Estate Segment [Member]
Debt Instrument [Line Items]
Debt	49	70
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Debt	150	124
Icahn Enterprises Holdings [Member]
Debt Instrument [Line Items]
Debt	9,289	9,865
Icahn Enterprises Holdings [Member] | Senior unsecured notes [Member] | 2020 Notes [Member]
Debt Instrument [Line Items]
Debt	493	0
Icahn Enterprises Holdings [Member] | Senior unsecured notes [Member] | 8% senior unsecured notes due 2018 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	2,470	2,471
Icahn Enterprises Holdings [Member] | Senior unsecured notes [Member] | 7.75% senior unsecured notes due 2016 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,047	1,047
Icahn Enterprises Holdings [Member] | Senior unsecured notes [Member] | Senior unsecured variable rate convertible notes due 2013 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	0	556
Icahn Enterprises Holdings [Member] | Debt facilities [Member] | Automotive Segment [Member]
Debt Instrument [Line Items]
Debt	2,494	2,738
Icahn Enterprises Holdings [Member] | Debt facilities [Member] | Energy Segment [Member]
Debt Instrument [Line Items]
Debt	500	749
Icahn Enterprises Holdings [Member] | Debt facilities [Member] | Railcar Segment [Member]
Debt Instrument [Line Items]
Debt	1,448	1,600
Icahn Enterprises Holdings [Member] | Secured credit facilities [Member] | Energy Segment [Member]
Debt Instrument [Line Items]
Debt	125	125
Icahn Enterprises Holdings [Member] | Secured credit facilities [Member] | Gaming Segment [Member]
Debt Instrument [Line Items]
Debt	298	171
Icahn Enterprises Holdings [Member] | Secured credit facilities [Member] | Food Packaging Segment [Member]
Debt Instrument [Line Items]
Debt	215	214
Icahn Enterprises Holdings [Member] | Mortgages payable [Member] | Real Estate Segment [Member]
Debt Instrument [Line Items]
Debt	49	70
Icahn Enterprises Holdings [Member] | Other Debt Obligations [Member]
Debt Instrument [Line Items]
Debt	$ 150	$ 124