Schedule I Condensed Financial Information of Parent - Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010
Cash and cash equivalents	$ 2,078	$ 2,908	$ 3,257	$ 3,102
Other assets	1,640	1,493
Total Assets	36,442	35,790
Accrued expenses and other liabilities	1,828	2,248
Debt	12,633	11,588
Total liabilities	26,409	23,400
Limited partners: Depositary units: 131,481,059 and 123,103,414 units issued and outstanding at December 31, 2015 and 2014, respectively	4,244	5,672
General partner	(257)	(229)
Total equity	10,033	12,390	13,309	9,816
Total Liabilities and Equity	36,442	35,790
Parent Company [Member]
Cash and cash equivalents	0	0	0		$ 0
Investments in subsidiaries, net	9,577	11,028
Deferred financing costs	6	8
Total Assets	9,583	11,036
Accrued expenses and other liabilities	106	107
Debt	5,490	5,486
Total liabilities	5,596	5,593
Limited partners: Depositary units: 131,481,059 and 123,103,414 units issued and outstanding at December 31, 2015 and 2014, respectively	4,244	5,672
General partner	(257)	(229)
Total equity	3,987	5,443
Total Liabilities and Equity	9,583	11,036
Icahn Enterprises Holdings [Member]
Cash and cash equivalents	2,078	2,908	3,257	3,102
Other assets	1,664	1,516
Total Assets	36,466	35,813
Accrued expenses and other liabilities	1,828	2,248
Debt	12,633	11,588
Total liabilities	26,409	23,400
Limited partners: Depositary units: 131,481,059 and 123,103,414 units issued and outstanding at December 31, 2015 and 2014, respectively	4,310	5,751
General partner	(299)	(285)
Total equity	10,057	12,413	13,331	$ 9,838
Total Liabilities and Equity	36,466	35,813
Icahn Enterprises Holdings [Member] | Parent Company [Member]
Cash and cash equivalents	51	388	$ 142		$ 107
Other assets	223	114
Investments in subsidiaries, net	9,363	10,592
Total Assets	9,637	11,094
Accrued expenses and other liabilities	109	111
Debt	5,517	5,517
Total liabilities	5,626	5,628
Limited partners: Depositary units: 131,481,059 and 123,103,414 units issued and outstanding at December 31, 2015 and 2014, respectively	4,310	5,751
General partner	(299)	(285)
Total equity	4,011	5,466
Total Liabilities and Equity	$ 9,637	$ 11,094