Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 1,991	$ 661
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain from securities transactions	(2,495)	(1,422)
Purchases of securities	(5,532)	(1,703)
Proceeds from sales of securities	1,574	6,889
Purchases to cover securities sold, not yet purchased	(45)	(5,160)
Proceeds from securities sold, not yet purchased	124	1,000
Changes in receivables and payables relating to securities transactions	3,739	(2,337)
Loss on disposition of assets	57	0
Depreciation and amortization	503	411
Impairment	7	87
Deferred taxes	123	(181)
Other, net	(5)	(33)
Changes in cash held at consolidated affiliated partnerships and restricted cash	4	3,093
Changes in other operating assets and liabilities	269	63
Net cash provided by operating activities	314	1,368
Cash flows from investing activities:
Capital expenditures	(785)	(617)
Acquisitions of businesses, net of cash acquired	0	(1,348)
Proceeds from sale of investments	38	170
Purchases of investments	(65)	(210)
Other, net	22	29
Net cash used in investing activities	(790)	(1,976)
Cash flows from financing activities:
Investment segment distributions	(185)	(17)
Investment segment contributions	45	0
Proceeds from equity offerings	317	513
Partnership distributions	(32)	(31)
Proceeds from offerings of subsidiary equity	1,308	0
Distributions to non-controlling interests in subsidiaries	(342)	0
Proceeds from issuance of senior unsecured notes	493	1,030
Proceeds from other borrowings	122	172
Repayments of borrowings	(1,021)	(175)
Other, net	(14)	(38)
Net cash provided by financing activities	691	1,454
Effect of exchange rate changes on cash and cash equivalents	(12)	16
Net increase in cash and cash equivalents	203	862
Cash and cash equivalents, beginning of period	3,071	2,278
Cash and cash equivalents, end of period	3,274	3,140
Supplemental information:
Cash payments for interest, net of amounts capitalized	438	387
Net cash payments for income taxes	117	185
Distribution payable to LP unitholders	140	0
Non-cash investment segment contribution	185	0
Acquisition of non-controlling interest in CVR	0	135
Net unrealized gain (loss) on available-for-sale securities	0	(2)
Icahn Enterprises Holdings [Member]
Cash flows from operating activities:
Net income	1,991	661
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain from securities transactions	(2,495)	(1,422)
Purchases of securities	(5,532)	(1,703)
Proceeds from sales of securities	1,574	6,889
Purchases to cover securities sold, not yet purchased	(45)	(5,160)
Proceeds from securities sold, not yet purchased	124	1,000
Changes in receivables and payables relating to securities transactions	3,739	(2,337)
Loss on disposition of assets	57	0
Depreciation and amortization	503	411
Impairment	7	87
Deferred taxes	123	(181)
Other, net	(5)	(33)
Changes in cash held at consolidated affiliated partnerships and restricted cash	4	3,093
Changes in other operating assets and liabilities	269	63
Net cash provided by operating activities	314	1,368
Cash flows from investing activities:
Capital expenditures	(785)	(617)
Acquisitions of businesses, net of cash acquired	0	(1,348)
Proceeds from sale of investments	38	170
Purchases of investments	(65)	(210)
Other, net	22	29
Net cash used in investing activities	(790)	(1,976)
Cash flows from financing activities:
Investment segment distributions	(185)	(17)
Investment segment contributions	45	0
Proceeds from equity offerings	317	513
Partnership distributions	(32)	(31)
Proceeds from offerings of subsidiary equity	1,308	0
Distributions to non-controlling interests in subsidiaries	(342)	0
Proceeds from issuance of senior unsecured notes	493	1,030
Proceeds from other borrowings	122	172
Repayments of borrowings	(1,021)	(175)
Other, net	(14)	(38)
Net cash provided by financing activities	691	1,454
Effect of exchange rate changes on cash and cash equivalents	(12)	16
Net increase in cash and cash equivalents	203	862
Cash and cash equivalents, beginning of period	3,071	2,278
Cash and cash equivalents, end of period	3,274
Supplemental information:
Cash payments for interest, net of amounts capitalized	438	387
Net cash payments for income taxes	117	185
Distribution payable to LP unitholders	140	0
Non-cash investment segment contribution	185	0
Acquisition of non-controlling interest in CVR	0	135
Net unrealized gain (loss) on available-for-sale securities	$ 0	$ (2)