Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2016	Nov. 02, 2016
Entity Information [Line Items]
Entity Registrant Name	ICAHN ENTERPRISES L.P.
Trading Symbol	IEP
Entity Central Index Key	0000813762
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		141,693,617
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
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-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		0
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes