Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 422	$ 77
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Net gain from securities transactions	(525)	(154)
Purchases of securities	(283)	(2,756)
Proceeds from sales of securities	339	410
Purchases to cover securities sold, not yet purchased	(186)	(73)
Proceeds from securities sold, not yet purchased	839	16
Changes in receivables and payables relating to securities transactions	(560)	1,718
Loss on extinguishment of debt	2	126
Gain on disposition of assets	(11)	(5)
Depreciation and amortization	207	197
Deferred taxes	5	63
Other, net	(14)	12
Changes in cash held at consolidated affiliated partnerships and restricted cash	(534)	(335)
Changes in other operating assets and liabilities	113	(98)
Net cash used in operating activities	(186)	(802)
Cash flows from investing activities:
Capital expenditures	(363)	(282)
Acquisition of business, net of cash acquired	(305)	0
Net proceeds from business dispositions	15	0
Net proceeds from the sale and disposition of assets	80	0
Other, net	0	(14)
Net cash used in investing activities	(573)	(296)
Cash flows from financing activities:
Capital contributions by non-controlling interests	245	0
Partnership distributions	0	(24)
Proceeds from offering of subsidiary equity	20	0
Distributions to non-controlling interests in subsidiaries	(48)	(427)
Proceeds from issuance of senior unsecured notes	0	4,991
Proceeds from other borrowings	1,070	1,275
Repayments of other borrowings	0	(3,625)
Repayments of other borrowings	(572)	(1,000)
Other, net	(13)	(10)
Net cash provided by financing activities	702	1,180
Effect of exchange rate changes on cash and cash equivalents	13	(2)
Net (decrease) increase in cash and cash equivalents	(44)	80
Cash and cash equivalents, beginning of period	2,912	3,262
Cash and cash equivalents, end of period	2,868	3,342
Supplemental information:
Cash payments for interest, net of amounts capitalized	200	245
Net cash (refunds) payments for income taxes	(38)	15
Distribution payable to Icahn Enterprises unitholders	188	175
Changes in accounts payable related to construction in progress additions	22	27
Changes in accounts payable related to construction in progress additions	(3)	(5)
Icahn Enterprises Holdings [Member]
Cash flows from operating activities:
Net income	422	77
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Net gain from securities transactions	(525)	(154)
Purchases of securities	(283)	(2,756)
Proceeds from sales of securities	339	410
Purchases to cover securities sold, not yet purchased	(186)	(73)
Proceeds from securities sold, not yet purchased	839	16
Changes in receivables and payables relating to securities transactions	(560)	1,718
Loss on extinguishment of debt	2	126
Gain on disposition of assets	(11)	(5)
Depreciation and amortization	207	197
Deferred taxes	5	63
Other, net	(14)	12
Changes in cash held at consolidated affiliated partnerships and restricted cash	(534)	(335)
Changes in other operating assets and liabilities	113	(98)
Net cash used in operating activities	(186)	(802)
Cash flows from investing activities:
Capital expenditures	(363)	(282)
Acquisition of business, net of cash acquired	(305)	0
Net proceeds from business dispositions	15	0
Net proceeds from the sale and disposition of assets	80	0
Other, net	0	(14)
Net cash used in investing activities	(573)	(296)
Cash flows from financing activities:
Capital contributions by non-controlling interests	245	0
Partnership distributions	0	(24)
Proceeds from offering of subsidiary equity	20	0
Distributions to non-controlling interests in subsidiaries	(48)	(427)
Proceeds from issuance of senior unsecured notes	0	4,991
Proceeds from other borrowings	1,070	1,275
Repayments of other borrowings	0	(3,625)
Repayments of other borrowings	(572)	(1,000)
Other, net	(13)	(10)
Net cash provided by financing activities	702	1,180
Effect of exchange rate changes on cash and cash equivalents	13	(2)
Net (decrease) increase in cash and cash equivalents	(44)	80
Cash and cash equivalents, beginning of period	2,912	3,262
Cash and cash equivalents, end of period	2,868	3,342
Supplemental information:
Cash payments for interest, net of amounts capitalized	200	245
Net cash (refunds) payments for income taxes	(38)	15
Distribution payable to Icahn Enterprises unitholders	188	175
Changes in accounts payable related to construction in progress additions	22	27
Changes in accounts payable related to construction in progress additions	$ (3)	$ (5)