Debt Narrative - Senior Unsecured Notes - Icahn Enterprises and Icahn Enterprises Holdings (Details) - USD ($) $ in Millions				12 Months Ended
	Jan. 29, 2014	Jan. 21, 2014	Aug. 02, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Aug. 01, 2013
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ (2)	$ (162)	$ 0
Holding Company [Member] \| 5.875% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Term Loan Facility	$ 1,350
Proceeds from Issuance of Debt	$ 1,340
Holding Company [Member] \| Additional 2020 Notes [Member]
Debt Instrument [Line Items]
Term Loan Facility		$ 1,200
Interest rate, long-term debt	5.875%
Proceeds from Issuance of Debt		$ 1,217
Holding Company [Member] \| 6.00% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Term Loan Facility							$ 500
Interest rate, long-term debt		6.00%					6.00%
Proceeds from Issuance of Debt			$ 493
Holding Company [Member] \| 4.875% senior unsecured notes due 2019 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Term Loan Facility		$ 1,275
Interest rate, long-term debt		4.875%
Proceeds from Issuance of Debt		$ 1,269
Holding Company [Member] \| 3.50% senior unsecured notes due 2017 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Term Loan Facility		$ 1,175
Interest rate, long-term debt		3.50%
Proceeds from Issuance of Debt		$ 1,169
Holding Company [Member] \| 2010-2012 Notes [Member]
Debt Instrument [Line Items]
Use of portion of debt proceeds		$ 3,500
Loss on extinguishment of debt					$ (108)

ICAHN ENTERPRISES HOLDINGS L.P. 10-K