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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, 2016	Dec. 31, 2015	Dec. 31, 2014	Aug. 01, 2013
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ (5)	$ (2)	$ (162)
Holding Company | 5.875% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt face amount	$ 1,350
Interest rate, long-term debt	5.875%
Proceeds from issuance of debt	$ 1,340
Holding Company | 6.00% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt face amount							$ 500
Interest rate, long-term debt		6.00%					6.00%
Proceeds from issuance of debt			$ 493
Holding Company | Additional 2020 Notes
Debt Instrument [Line Items]
Debt face amount		$ 1,200
Proceeds from issuance of debt		1,217
Holding Company | 4.875% senior unsecured notes due 2019 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt face amount		$ 1,275
Interest rate, long-term debt		4.875%
Proceeds from issuance of debt		$ 1,269
Holding Company | 3.50% senior unsecured notes due 2017 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt face amount		$ 1,175
Interest rate, long-term debt		3.50%
Proceeds from issuance of debt		$ 1,169
Holding Company | 2010-2012 Notes
Debt Instrument [Line Items]
Loss on extinguishment of debt						$ (108)

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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