Segment Reporting, Balance Sheets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 3,262	$ 3,108	$ 2,328	$ 2,988
Cash held at consolidated affiliated partnerships and restricted cash	396	963
Investments	12,261	5,491
Accounts receivable, net	1,750	1,854
Inventories, net	1,902	1,955
Property, plant and equipment, net	8,077	7,661
Goodwill and intangible assets, net	3,187	3,288
Other assets	910	1,612
Total Assets	31,745	25,932
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	4,943	4,222
Securities sold, not yet purchased, at fair value	884	533
Due to brokers	2,203	0
Post-employment benefit liability	1,111	1,488
Debt	9,295	9,873
Total liabilities	18,436	16,116
Equity attributable to Icahn Enterprises	6,092	4,669
Equity attributable to non-controlling interests	7,217	5,147
Total equity	13,309	9,816	7,871	7,931
Total Liabilities and Equity	31,745	25,932
Investment Segment [Member]
ASSETS
Cash and cash equivalents	3	14
Cash held at consolidated affiliated partnerships and restricted cash	321	913
Investments	11,826	5,084
Accounts receivable, net	0	0
Inventories, net	0	0
Property, plant and equipment, net	0	0
Goodwill and intangible assets, net	0	0
Other assets	47	582
Total Assets	12,197	6,593
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	757	152
Securities sold, not yet purchased, at fair value	884	533
Due to brokers	2,203	0
Post-employment benefit liability	0	0
Debt	0	0
Total liabilities	3,844	685
Equity attributable to Icahn Enterprises	3,696	2,387
Equity attributable to non-controlling interests	4,657	3,521
Total equity	8,353	5,908
Total Liabilities and Equity	12,197	6,593
Automotive Segment [Member]
ASSETS
Cash and cash equivalents	761	467
Cash held at consolidated affiliated partnerships and restricted cash	0	0
Investments	253	240
Accounts receivable, net	1,297	1,375
Inventories, net	1,068	1,074
Property, plant and equipment, net	2,038	1,971
Goodwill and intangible assets, net	1,715	1,782
Other assets	413	373
Total Assets	7,545	7,282
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	1,763	1,859
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	1,072	1,409
Debt	2,586	2,805
Total liabilities	5,421	6,073
Equity attributable to Icahn Enterprises	1,660	860
Equity attributable to non-controlling interests	464	349
Total equity	2,124	1,209
Total Liabilities and Equity	7,545	7,282
Energy Segment [Member]
ASSETS
Cash and cash equivalents	842	896
Cash held at consolidated affiliated partnerships and restricted cash	0	0
Investments	0	0
Accounts receivable, net	242	211
Inventories, net	527	528
Property, plant and equipment, net	2,684	2,648
Goodwill and intangible assets, net	1,307	1,327
Other assets	146	133
Total Assets	5,748	5,743
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	1,550	1,535
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	0	0
Debt	676	926
Total liabilities	2,226	2,461
Equity attributable to Icahn Enterprises	1,926	2,383
Equity attributable to non-controlling interests	1,596	899
Total equity	3,522	3,282
Total Liabilities and Equity	5,748	5,743
Gaming Segment [Member]
ASSETS
Cash and cash equivalents	359	243
Cash held at consolidated affiliated partnerships and restricted cash	31	15
Investments	34	35
Accounts receivable, net	10	13
Inventories, net	0	0
Property, plant and equipment, net	444	431
Goodwill and intangible assets, net	67	68
Other assets	51	47
Total Assets	996	852
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	132	134
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	0	0
Debt	298	171
Total liabilities	430	305
Equity attributable to Icahn Enterprises	392	379
Equity attributable to non-controlling interests	174	168
Total equity	566	547
Total Liabilities and Equity	996	852
Railcar Segment [Member]
ASSETS
Cash and cash equivalents	417	244
Cash held at consolidated affiliated partnerships and restricted cash	27	20
Investments	31	57
Accounts receivable, net	34	50
Inventories, net	90	110
Property, plant and equipment, net	1,889	1,564
Goodwill and intangible assets, net	7	7
Other assets	52	186
Total Assets	2,547	2,238
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	204	164
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	5	10
Debt	1,448	1,600
Total liabilities	1,657	1,774
Equity attributable to Icahn Enterprises	591	257
Equity attributable to non-controlling interests	299	207
Total equity	890	464
Total Liabilities and Equity	2,547	2,238
Food Packaging Segment [Member]
ASSETS
Cash and cash equivalents	19	31
Cash held at consolidated affiliated partnerships and restricted cash	1	1
Investments	0	0
Accounts receivable, net	67	62
Inventories, net	72	61
Property, plant and equipment, net	156	154
Goodwill and intangible assets, net	11	12
Other assets	79	34
Total Assets	405	355
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	80	74
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	33	66
Debt	217	215
Total liabilities	330	355
Equity attributable to Icahn Enterprises	55	(3)
Equity attributable to non-controlling interests	20	3
Total equity	75	0
Total Liabilities and Equity	405	355
Metals Segment [Member]
ASSETS
Cash and cash equivalents	31	14
Cash held at consolidated affiliated partnerships and restricted cash	4	4
Investments	0	0
Accounts receivable, net	62	102
Inventories, net	85	122
Property, plant and equipment, net	129	142
Goodwill and intangible assets, net	9	11
Other assets	14	22
Total Assets	334	417
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	57	73
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	1	3
Debt	3	3
Total liabilities	61	79
Equity attributable to Icahn Enterprises	273	338
Equity attributable to non-controlling interests	0	0
Total equity	273	338
Total Liabilities and Equity	334	417
Real Estate Segment [Member]
ASSETS
Cash and cash equivalents	32	87
Cash held at consolidated affiliated partnerships and restricted cash	3	2
Investments	0	0
Accounts receivable, net	3	5
Inventories, net	0	0
Property, plant and equipment, net	656	665
Goodwill and intangible assets, net	68	78
Other assets	18	15
Total Assets	780	852
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	18	18
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	0	0
Debt	51	71
Total liabilities	69	89
Equity attributable to Icahn Enterprises	711	763
Equity attributable to non-controlling interests	0	0
Total equity	711	763
Total Liabilities and Equity	780	852
Home Fashion Segment [Member]
ASSETS
Cash and cash equivalents	16	67
Cash held at consolidated affiliated partnerships and restricted cash	6	6
Investments	0	14
Accounts receivable, net	35	36
Inventories, net	60	60
Property, plant and equipment, net	78	83
Goodwill and intangible assets, net	3	3
Other assets	24	22
Total Assets	222	291
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	31	35
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	0	0
Debt	0	0
Total liabilities	31	35
Equity attributable to Icahn Enterprises	191	256
Equity attributable to non-controlling interests	0	0
Total equity	191	256
Total Liabilities and Equity	222	291
Holding Company [Member]
ASSETS
Cash and cash equivalents	782	1,045
Cash held at consolidated affiliated partnerships and restricted cash	3	2
Investments	117	61
Accounts receivable, net	0	0
Inventories, net	0	0
Property, plant and equipment, net	3	3
Goodwill and intangible assets, net	0	0
Other assets	66	198
Total Assets	971	1,309
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	351	178
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Post-employment benefit liability	0	0
Debt	4,016	4,082
Total liabilities	4,367	4,260
Equity attributable to Icahn Enterprises	(3,403)	(2,951)
Equity attributable to non-controlling interests	7	0
Total equity	(3,396)	(2,951)
Total Liabilities and Equity	971	1,309
Holding Company [Member]
ASSETS
Cash and cash equivalents	3,262	3,108	2,328	2,988
Cash held at consolidated affiliated partnerships and restricted cash	396	963
Investments	12,261	5,491
Accounts receivable, net	1,750	1,854
Inventories, net	1,902	1,955
Property, plant and equipment, net	8,077	7,661
Total Assets	31,761	25,946
LIABILITIES AND EQUITY
Securities sold, not yet purchased, at fair value	884	533
Due to brokers	2,203	0
Post-employment benefit liability	1,111	1,488
Debt	9,289	9,865
Total liabilities	18,430	16,108
Equity attributable to Icahn Enterprises	6,114	4,691
Equity attributable to non-controlling interests	7,217	5,147
Total equity	13,331	9,838	7,892	7,951
Total Liabilities and Equity	31,761	25,946
Holding Company [Member] | Investment Segment [Member]
ASSETS
Total Assets	12,197	6,593
Holding Company [Member] | Automotive Segment [Member]
ASSETS
Total Assets	7,545	7,282
Holding Company [Member] | Energy Segment [Member]
ASSETS
Total Assets	5,748	5,743
Holding Company [Member] | Gaming Segment [Member]
ASSETS
Total Assets	996	852
Holding Company [Member] | Railcar Segment [Member]
ASSETS
Total Assets	2,547	2,238
Holding Company [Member] | Food Packaging Segment [Member]
ASSETS
Total Assets	405	355
Holding Company [Member] | Metals Segment [Member]
ASSETS
Total Assets	334	417
Holding Company [Member] | Real Estate Segment [Member]
ASSETS
Total Assets	780	852
Holding Company [Member] | Home Fashion Segment [Member]
ASSETS
Total Assets	222	291
Holding Company [Member] | Holding Company [Member]
ASSETS
Total Assets	987	1,323
Holding Company [Member] | Eliminations [Member]
ASSETS
Total Assets	$ 0	$ 0