Schedule I Condensed Financial Information of Parent - Debt Note (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Debt	$ 9,295	$ 9,873
Icahn Enterprises Holdings [Member]
Debt	9,289	9,865
Parent Company [Member]
Debt	4,015	4,126
Parent Company [Member] | Icahn Enterprises Holdings [Member]
Affiliate ownership interest	99.00%
Debt	4,050	4,136
Senior unsecured variable rate convertible notes due 2013 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member]
Debt	0	556
Senior unsecured variable rate convertible notes due 2013 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Icahn Enterprises Holdings [Member]
Debt	0	556
Senior unsecured variable rate convertible notes due 2013 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Parent Company [Member]
Debt	0	600
Senior unsecured variable rate convertible notes due 2013 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Parent Company [Member] | Icahn Enterprises Holdings [Member]
Debt	0	556
8% senior unsecured notes due 2018 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member]
Debt	2,473	2,476
8% senior unsecured notes due 2018 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Icahn Enterprises Holdings [Member]
Debt	2,470	2,471
8% senior unsecured notes due 2018 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Parent Company [Member]
Debt	2,472	2,476
8% senior unsecured notes due 2018 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Parent Company [Member] | Icahn Enterprises Holdings [Member]
Debt	2,468	2,471
7.75% senior unsecured notes due 2016 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member]
Debt	1,050	1,050
7.75% senior unsecured notes due 2016 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Icahn Enterprises Holdings [Member]
Debt	1,047	1,047
7.75% senior unsecured notes due 2016 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Parent Company [Member]
Debt	1,050	1,050
7.75% senior unsecured notes due 2016 - Icahn Enterprises/Icahn Enterprises Holdings | Senior unsecured notes [Member] | Parent Company [Member] | Icahn Enterprises Holdings [Member]
Debt	1,048	1,047
2020 Notes [Member] | Senior unsecured notes [Member]
Debt	493	0
2020 Notes [Member] | Senior unsecured notes [Member] | Icahn Enterprises Holdings [Member]
Debt	493	0
2020 Notes [Member] | Senior unsecured notes [Member] | Parent Company [Member]
Debt	493	0
2020 Notes [Member] | Senior unsecured notes [Member] | Parent Company [Member] | Icahn Enterprises Holdings [Member]
Debt	493	0
Mortgages payable [Member] | Mortgages [Member] | Parent Company [Member] | Icahn Enterprises Holdings [Member]
Debt	$ 41	$ 62
Icahn Enterprises G.P. [Member]
General partner ownership percentage in Icahn Enterprises	1.00%
Aggregate general partner ownership interest of parent and operating subsidiary	1.99%
Icahn Enterprises G.P. [Member] | Parent Company [Member]
General partner ownership percentage in Icahn Enterprises	1.00%
Aggregate general partner ownership interest of parent and operating subsidiary	1.99%
Icahn Enterprises G.P. [Member] | Parent Company [Member] | Icahn Enterprises Holdings [Member]
General partner ownership percentage in Icahn Enterprises	1.00%