Document and Entity Information Document - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Feb. 26, 2016	Jun. 30, 2015
Entity Information [Line Items]
Entity Registrant Name	ICAHN ENTERPRISES L.P.
Entity Central Index Key	0000813762
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		131,481,059
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,245
Icahn Enterprises Holdings [Member]
Entity Information [Line Items]
Entity Registrant Name	ICAHN ENTERPRISES HOLDINGS L.P.
Entity Central Index Key	0001034563
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		0
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes