Segment Reporting, Income Statements (Details) (USD $)	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013 reporting_segments		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Number of reportable segments																	9
Revenues:
Net sales	$ 4,533,000,000	[1]	$ 4,181,000,000	[1]	$ 4,497,000,000	[1]	$ 4,574,000,000	[1]	$ 3,993,000,000	[1],[2]	$ 4,486,000,000	[1],[2]	$ 3,696,000,000	[1],[2]	$ 2,399,000,000	[1],[2]	$ 17,785,000,000		$ 14,574,000,000		$ 9,127,000,000
Other revenues from operations																	988,000,000		951,000,000		933,000,000
Net gain from investment activities																	1,694,000,000		343,000,000		1,905,000,000
Interest and dividend income																	194,000,000		103,000,000		126,000,000
Other (loss) income, net																	21,000,000		(175,000,000)		(72,000,000)
Total Revenues	4,872,000,000	[1]	5,771,000,000	[1]	4,670,000,000	[1]	5,369,000,000	[1]	4,291,000,000	[1],[2]	4,516,000,000	[1],[2]	4,260,000,000	[1],[2]	2,729,000,000	[1],[2]	20,682,000,000		15,796,000,000		12,019,000,000
Expenses:
Cost of goods sold																	15,809,000,000		12,606,000,000		7,871,000,000
Other expenses from operations																	504,000,000		502,000,000		505,000,000
Selling, general and administrative																	1,417,000,000		1,275,000,000		1,237,000,000
Restructuring																	50,000,000		31,000,000		11,000,000
Impairment																	16,000,000		129,000,000		71,000,000
Interest expense																	560,000,000		572,000,000		490,000,000
Total Expenses																	18,356,000,000		15,115,000,000		10,185,000,000
Income before income tax benefit (expense)																	2,326,000,000		681,000,000		1,834,000,000
Income tax benefit (expense)																	118,000,000		81,000,000		(34,000,000)
Income from continuing operations																	2,444,000,000		762,000,000		1,800,000,000
Less: net (income) loss attributable to non-controlling interests																	(1,419,000,000)		(366,000,000)		(1,050,000,000)
Net income (loss) attributable to Icahn Enterprises																	1,025,000,000		396,000,000		750,000,000
Supplemental information:
Capital expenditures																	1,161,000,000		936,000,000		494,000,000
Depreciation and amortization																	708,000,000	[3]	607,000,000	[3]	469,000,000	[3]
Amortization of Financing Costs and Discounts																	34,000,000		28,000,000		39,000,000
Investment Segment [Member]
Revenues:
Net sales																	0		0		0
Other revenues from operations																	0		0		0
Net gain from investment activities																	1,850,000,000		314,000,000		1,887,000,000
Interest and dividend income																	178,000,000		85,000,000		110,000,000
Other (loss) income, net																	3,000,000		(1,000,000)		(101,000,000)
Total Revenues																	2,031,000,000		398,000,000		1,896,000,000
Expenses:
Cost of goods sold																	0		0		0
Other expenses from operations																	0		0		0
Selling, general and administrative																	119,000,000		24,000,000		37,000,000
Restructuring																	0		0		0
Impairment																	0		0		0
Interest expense																	10,000,000		2,000,000		15,000,000
Total Expenses																	129,000,000		26,000,000		52,000,000
Income before income tax benefit (expense)																	1,902,000,000		372,000,000		1,844,000,000
Income tax benefit (expense)																	0		0		0
Income from continuing operations																	1,902,000,000		372,000,000		1,844,000,000
Less: net (income) loss attributable to non-controlling interests																	(1,090,000,000)		(215,000,000)		(971,000,000)
Net income (loss) attributable to Icahn Enterprises																	812,000,000		157,000,000		873,000,000
Supplemental information:
Capital expenditures																	0		0		0
Depreciation and amortization																	0	[3]	0	[3]	0	[3]
Automotive Segment [Member]
Revenues:
Net sales																	6,905,000,000		6,664,000,000		6,910,000,000
Other revenues from operations																	0		0		0
Net gain from investment activities																	0		0		0
Interest and dividend income																	3,000,000		5,000,000		6,000,000
Other (loss) income, net																	(32,000,000)		8,000,000		21,000,000
Total Revenues																	6,876,000,000		6,677,000,000		6,937,000,000
Expenses:
Cost of goods sold																	5,885,000,000		5,753,000,000		5,822,000,000
Other expenses from operations																	0		0		0
Selling, general and administrative																	749,000,000		710,000,000		736,000,000
Restructuring																	40,000,000		26,000,000		5,000,000
Impairment																	8,000,000		98,000,000		48,000,000
Interest expense																	111,000,000		141,000,000		141,000,000
Total Expenses																	6,793,000,000		6,728,000,000		6,752,000,000
Income before income tax benefit (expense)																	83,000,000		(51,000,000)		185,000,000
Income tax benefit (expense)																	(180,000,000)		29,000,000		(17,000,000)
Income from continuing operations																	263,000,000		(22,000,000)		168,000,000
Less: net (income) loss attributable to non-controlling interests																	(13,000,000)		(2,000,000)		(47,000,000)
Net income (loss) attributable to Icahn Enterprises																	250,000,000		(24,000,000)		121,000,000
Supplemental information:
Capital expenditures																	380,000,000		387,000,000		348,000,000
Depreciation and amortization																	296,000,000	[3]	289,000,000	[3]	284,000,000	[3]
Energy Segment [Member]
Revenues:
Net sales																	8,986,000,000		5,703,000,000	[4]
Other revenues from operations																	0		0	[4]
Net gain from investment activities																	0		0	[4]
Interest and dividend income																	1,000,000		1,000,000	[4]
Other (loss) income, net																	76,000,000		(185,000,000)	[4]
Total Revenues																	9,063,000,000		5,519,000,000	[4]
Expenses:
Cost of goods sold																	8,204,000,000		4,848,000,000	[4]
Other expenses from operations																	0		0	[4]
Selling, general and administrative																	137,000,000		112,000,000	[4]
Restructuring																	0		0	[4]
Impairment																	0		0	[4]
Interest expense																	48,000,000		39,000,000	[4]
Total Expenses																	8,389,000,000		4,999,000,000	[4]
Income before income tax benefit (expense)																	674,000,000		520,000,000	[4]
Income tax benefit (expense)																	195,000,000		182,000,000	[4]
Income from continuing operations																	479,000,000		338,000,000	[4]
Less: net (income) loss attributable to non-controlling interests																	(190,000,000)		(75,000,000)	[4]
Net income (loss) attributable to Icahn Enterprises																	289,000,000		263,000,000	[4]
Supplemental information:
Capital expenditures																	256,000,000		138,000,000	[4]
Depreciation and amortization																	208,000,000	[3]	128,000,000	[3],[4]
Gaming Segment [Member]
Revenues:
Net sales																	0		0		0
Other revenues from operations																	575,000,000		613,000,000		624,000,000
Net gain from investment activities																	0		0		0
Interest and dividend income																	1,000,000		1,000,000		1,000,000
Other (loss) income, net																	(5,000,000)		(3,000,000)		(1,000,000)
Total Revenues																	571,000,000		611,000,000		624,000,000
Expenses:
Cost of goods sold																	0		0		0
Other expenses from operations																	294,000,000		312,000,000		329,000,000
Selling, general and administrative																	238,000,000		250,000,000		254,000,000
Restructuring																	0		0		0
Impairment																	3,000,000		2,000,000		5,000,000
Interest expense																	14,000,000		13,000,000		9,000,000
Total Expenses																	549,000,000		577,000,000		597,000,000
Income before income tax benefit (expense)																	22,000,000		34,000,000		27,000,000
Income tax benefit (expense)																	3,000,000		(4,000,000)		(3,000,000)
Income from continuing operations																	19,000,000		30,000,000		24,000,000
Less: net (income) loss attributable to non-controlling interests																	(6,000,000)		(9,000,000)		(11,000,000)
Net income (loss) attributable to Icahn Enterprises																	13,000,000		21,000,000		13,000,000
Supplemental information:
Capital expenditures																	57,000,000		44,000,000		34,000,000
Depreciation and amortization																	34,000,000	[3]	32,000,000	[3]	32,000,000	[3]
Railcar Segment [Member]
Revenues:
Net sales																	408,000,000		530,000,000		453,000,000
Other revenues from operations																	331,000,000		256,000,000		228,000,000
Net gain from investment activities																	2,000,000		2,000,000		0
Interest and dividend income																	9,000,000		11,000,000		12,000,000
Other (loss) income, net																	(6,000,000)		0		(2,000,000)
Total Revenues																	744,000,000		799,000,000		691,000,000
Expenses:
Cost of goods sold																	326,000,000		419,000,000		410,000,000
Other expenses from operations																	160,000,000		141,000,000		129,000,000
Selling, general and administrative																	39,000,000		37,000,000		34,000,000
Restructuring																	0		0		0
Impairment																	0		0		0
Interest expense																	49,000,000		68,000,000		74,000,000
Total Expenses																	574,000,000		665,000,000		647,000,000
Income before income tax benefit (expense)																	170,000,000		134,000,000		44,000,000
Income tax benefit (expense)																	31,000,000		(42,000,000)		(4,000,000)
Income from continuing operations																	139,000,000		92,000,000		40,000,000
Less: net (income) loss attributable to non-controlling interests																	(109,000,000)		(63,000,000)		(38,000,000)
Net income (loss) attributable to Icahn Enterprises																	30,000,000		29,000,000		2,000,000
Supplemental information:
Capital expenditures																	424,000,000		302,000,000		49,000,000
Depreciation and amortization																	92,000,000	[3]	83,000,000	[3]	81,000,000	[3]
Food Packaging Segment [Member]
Revenues:
Net sales																	371,000,000		343,000,000		339,000,000
Other revenues from operations																	0		0		0
Net gain from investment activities																	0		0		0
Interest and dividend income																	0		0		0
Other (loss) income, net																	(25,000,000)		(2,000,000)		(1,000,000)
Total Revenues																	346,000,000		341,000,000		338,000,000
Expenses:
Cost of goods sold																	285,000,000		263,000,000		263,000,000
Other expenses from operations																	0		0		0
Selling, general and administrative																	47,000,000		45,000,000		43,000,000
Restructuring																	0		1,000,000		0
Impairment																	0		0		0
Interest expense																	22,000,000		21,000,000		21,000,000
Total Expenses																	354,000,000		330,000,000		327,000,000
Income before income tax benefit (expense)																	(8,000,000)		11,000,000		11,000,000
Income tax benefit (expense)																	(51,000,000)		(5,000,000)		(5,000,000)
Income from continuing operations																	43,000,000		6,000,000		6,000,000
Less: net (income) loss attributable to non-controlling interests																	(11,000,000)		(2,000,000)		(2,000,000)
Net income (loss) attributable to Icahn Enterprises																	32,000,000		4,000,000		4,000,000
Supplemental information:
Capital expenditures																	20,000,000		39,000,000		37,000,000
Depreciation and amortization																	21,000,000	[3]	18,000,000	[3]	16,000,000	[3]
Metals Segment [Member]
Revenues:
Net sales																	929,000,000		1,102,000,000		1,095,000,000
Other revenues from operations																	0		0		0
Net gain from investment activities																	0		0		0
Interest and dividend income																	0		0		0
Other (loss) income, net																	0		1,000,000		1,000,000
Total Revenues																	929,000,000		1,103,000,000		1,096,000,000
Expenses:
Cost of goods sold																	948,000,000		1,116,000,000		1,068,000,000
Other expenses from operations																	0		0		0
Selling, general and administrative																	27,000,000		28,000,000		25,000,000
Restructuring																	0		0		0
Impairment																	2,000,000		18,000,000		0
Interest expense																	0		0		0
Total Expenses																	977,000,000		1,162,000,000		1,093,000,000
Income before income tax benefit (expense)																	(48,000,000)		(59,000,000)		3,000,000
Income tax benefit (expense)																	(20,000,000)		1,000,000		3,000,000
Income from continuing operations																	(28,000,000)		(58,000,000)		6,000,000
Less: net (income) loss attributable to non-controlling interests																	0		0		0
Net income (loss) attributable to Icahn Enterprises																	(28,000,000)		(58,000,000)		6,000,000
Supplemental information:
Capital expenditures																	15,000,000		24,000,000		25,000,000
Depreciation and amortization																	26,000,000	[3]	26,000,000	[3]	23,000,000	[3]
Real Estate Segment [Member]
Revenues:
Net sales																	2,000,000		4,000,000		8,000,000
Other revenues from operations																	82,000,000		82,000,000		81,000,000
Net gain from investment activities																	0		0		0
Interest and dividend income																	0		0		0
Other (loss) income, net																	1,000,000		2,000,000		1,000,000
Total Revenues																	85,000,000		88,000,000		90,000,000
Expenses:
Cost of goods sold																	0		1,000,000		3,000,000
Other expenses from operations																	50,000,000		49,000,000		47,000,000
Selling, general and administrative																	12,000,000		14,000,000		16,000,000
Restructuring																	0		0		0
Impairment																	2,000,000		0		0
Interest expense																	4,000,000		5,000,000		6,000,000
Total Expenses																	68,000,000		69,000,000		72,000,000
Income before income tax benefit (expense)																	17,000,000		19,000,000		18,000,000
Income tax benefit (expense)																	0		0		0
Income from continuing operations																	17,000,000		19,000,000		18,000,000
Less: net (income) loss attributable to non-controlling interests																	0		0		0
Net income (loss) attributable to Icahn Enterprises																	17,000,000		19,000,000		18,000,000
Supplemental information:
Capital expenditures																	2,000,000		2,000,000		1,000,000
Depreciation and amortization																	23,000,000	[3]	23,000,000	[3]	23,000,000	[3]
Home Fashion Segment [Member]
Revenues:
Net sales																	184,000,000		228,000,000		322,000,000
Other revenues from operations																	0		0		0
Net gain from investment activities																	0		0		0
Interest and dividend income																	0		0		0
Other (loss) income, net																	3,000,000		3,000,000		3,000,000
Total Revenues																	187,000,000		231,000,000		325,000,000
Expenses:
Cost of goods sold																	161,000,000		206,000,000		305,000,000
Other expenses from operations																	0		0		0
Selling, general and administrative																	31,000,000		37,000,000		61,000,000
Restructuring																	10,000,000		4,000,000		6,000,000
Impairment																	1,000,000		11,000,000		18,000,000
Interest expense																	0		0		1,000,000
Total Expenses																	203,000,000		258,000,000		391,000,000
Income before income tax benefit (expense)																	(16,000,000)		(27,000,000)		(66,000,000)
Income tax benefit (expense)																	0		0		0
Income from continuing operations																	(16,000,000)		(27,000,000)		(66,000,000)
Less: net (income) loss attributable to non-controlling interests																	0		0		10,000,000
Net income (loss) attributable to Icahn Enterprises																	(16,000,000)		(27,000,000)		(56,000,000)
Supplemental information:
Capital expenditures																	7,000,000		0		0
Depreciation and amortization																	8,000,000	[3]	8,000,000	[3]	10,000,000	[3]
Holding Company [Member]
Revenues:
Net sales																	0		0		0
Other revenues from operations																	0		0		0
Net gain from investment activities																	(158,000,000)		27,000,000		27,000,000
Interest and dividend income																	2,000,000		0		2,000,000
Other (loss) income, net																	6,000,000		2,000,000		7,000,000
Total Revenues																	(150,000,000)		29,000,000		36,000,000
Expenses:
Cost of goods sold																	0		0		0
Other expenses from operations																	0		0		0
Selling, general and administrative																	18,000,000		18,000,000		31,000,000
Restructuring																	0		0		0
Impairment																	0		0		0
Interest expense																	302,000,000		283,000,000		223,000,000
Total Expenses																	320,000,000		301,000,000		254,000,000
Income before income tax benefit (expense)																	(470,000,000)		(272,000,000)		(218,000,000)
Income tax benefit (expense)																	(96,000,000)		284,000,000		(8,000,000)
Income from continuing operations																	(374,000,000)		12,000,000		(226,000,000)
Less: net (income) loss attributable to non-controlling interests																	0		0		0
Net income (loss) attributable to Icahn Enterprises																	(374,000,000)		12,000,000		(226,000,000)
Supplemental information:
Capital expenditures																	0		0		0
Depreciation and amortization																	0	[3]	0	[3]	0	[3]
Icahn Enterprises Holdings [Member]
Revenues:
Net sales																	17,785,000,000		14,574,000,000		9,127,000,000
Other revenues from operations																	988,000,000		951,000,000		933,000,000
Net gain from investment activities																	1,694,000,000		343,000,000		1,905,000,000
Interest and dividend income																	194,000,000		103,000,000		126,000,000
Other (loss) income, net																	21,000,000		(175,000,000)		(72,000,000)
Total Revenues																	20,682,000,000		15,796,000,000		12,019,000,000
Expenses:
Cost of goods sold																	15,809,000,000		12,606,000,000		7,871,000,000
Other expenses from operations																	504,000,000		502,000,000		505,000,000
Selling, general and administrative																	1,417,000,000		1,275,000,000		1,237,000,000
Restructuring																	50,000,000		31,000,000		11,000,000
Impairment																	16,000,000		129,000,000		71,000,000
Interest expense																	560,000,000		571,000,000		489,000,000
Total Expenses																	18,356,000,000		15,114,000,000		10,184,000,000
Income before income tax benefit (expense)																	2,326,000,000		682,000,000		1,835,000,000
Income tax benefit (expense)																	118,000,000		81,000,000		(34,000,000)
Income from continuing operations																	2,444,000,000		763,000,000		1,801,000,000
Net income (loss) attributable to Icahn Enterprises																	1,025,000,000		397,000,000		751,000,000
Supplemental information:
Amortization of Financing Costs and Discounts																	34,000,000		27,000,000		38,000,000
Icahn Enterprises Holdings [Member] | Investment Segment [Member]
Expenses:
Income from continuing operations																	1,902,000,000		372,000,000		1,844,000,000
Net income (loss) attributable to Icahn Enterprises																	812,000,000		157,000,000		873,000,000
Icahn Enterprises Holdings [Member] | Automotive Segment [Member]
Expenses:
Income from continuing operations																	263,000,000		(22,000,000)		168,000,000
Net income (loss) attributable to Icahn Enterprises																	250,000,000		(24,000,000)		121,000,000
Icahn Enterprises Holdings [Member] | Energy Segment [Member]
Expenses:
Interest expense																					0
Income from continuing operations																	479,000,000		338,000,000		0
Net income (loss) attributable to Icahn Enterprises																	289,000,000		263,000,000		0
Icahn Enterprises Holdings [Member] | Gaming Segment [Member]
Expenses:
Income from continuing operations																	19,000,000		30,000,000		24,000,000
Net income (loss) attributable to Icahn Enterprises																	13,000,000		21,000,000		13,000,000
Icahn Enterprises Holdings [Member] | Railcar Segment [Member]
Expenses:
Income from continuing operations																	139,000,000		92,000,000		40,000,000
Net income (loss) attributable to Icahn Enterprises																	30,000,000		29,000,000		2,000,000
Icahn Enterprises Holdings [Member] | Food Packaging Segment [Member]
Expenses:
Income from continuing operations																	43,000,000		6,000,000		6,000,000
Net income (loss) attributable to Icahn Enterprises																	32,000,000		4,000,000		4,000,000
Icahn Enterprises Holdings [Member] | Metals Segment [Member]
Expenses:
Income from continuing operations																	(28,000,000)		(58,000,000)		6,000,000
Net income (loss) attributable to Icahn Enterprises																	(28,000,000)		(58,000,000)		6,000,000
Icahn Enterprises Holdings [Member] | Real Estate Segment [Member]
Expenses:
Income from continuing operations																	17,000,000		19,000,000		18,000,000
Net income (loss) attributable to Icahn Enterprises																	17,000,000		19,000,000		18,000,000
Icahn Enterprises Holdings [Member] | Home Fashion Segment [Member]
Expenses:
Income from continuing operations																	(16,000,000)		(27,000,000)		(66,000,000)
Net income (loss) attributable to Icahn Enterprises																	(16,000,000)		(27,000,000)		(56,000,000)
Icahn Enterprises Holdings [Member] | Holding Company [Member]
Expenses:
Interest expense																	302,000,000		282,000,000		222,000,000
Income from continuing operations																	(374,000,000)		13,000,000		(225,000,000)
Net income (loss) attributable to Icahn Enterprises																	(374,000,000)		13,000,000		(225,000,000)
Icahn Enterprises Holdings [Member] | Eliminations [Member]
Expenses:
Income from continuing operations																					(14,000,000)
Net income (loss) attributable to Icahn Enterprises																					(5,000,000)
Eliminations [Member]
Revenues:
Net sales																					0
Other revenues from operations																					0
Net gain from investment activities																					(9,000,000)
Interest and dividend income																					(5,000,000)
Other (loss) income, net																					0
Total Revenues																					(14,000,000)
Expenses:
Cost of goods sold																					0
Other expenses from operations																					0
Selling, general and administrative																					0
Restructuring																					0
Impairment																					0
Interest expense																					0
Total Expenses																					0
Income before income tax benefit (expense)																					(14,000,000)
Income tax benefit (expense)																					0
Income from continuing operations																					(14,000,000)
Less: net (income) loss attributable to non-controlling interests																					9,000,000
Net income (loss) attributable to Icahn Enterprises																					(5,000,000)
Supplemental information:
Capital expenditures																					0
Depreciation and amortization																					$ 0	[3]

[1] Amounts for all periods presented differ from each respective Form 10-Q filing due to our acquisition of a controlling interest in New ARL on October 2, 2013, which is an entity under common control and which we consolidated on an as-if-pooling basis.

[2] We consolidated the results of CVR effective May 5, 2012.

[3] Excludes amounts related to the amortization of debt discounts and premiums included in interest expense in the amounts of $34 million, $28 million and $39 million for the years ended December 31, 2013, 2012 and 2011, respectively.

[4] We consolidated CVR effective May 4, 2012.