Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net (loss) income	$ (1,894)	$ 963
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Net loss (gain) from securities transactions	627	(1,020)
Purchases of securities	(1,211)	(542)
Proceeds from sales of securities	5,880	1,515
Purchases to cover securities sold, not yet purchased	(42)	(186)
Proceeds from securities sold, not yet purchased	475	895
Changes in receivables and payables relating to securities transactions	(5,046)	(1,463)
Depreciation and amortization	489	419
Impairment	577	4
Equity earnings from non-consolidated affiliates	(36)	(32)
Deferred taxes	4	75
Other, net	63	(14)
Changes in cash held at consolidated affiliated partnerships and restricted cash	589	(322)
Changes in other operating assets and liabilities	517	(139)
Net cash provided by operating activities	992	153
Cash flows from investing activities:
Capital expenditures	(421)	(729)
Acquisition of businesses, net of cash acquired	(1,042)	(786)
Purchases of investments	(75)	(107)
Proceeds from sale of investments	46	68
Other, net	10	61
Net cash used in investing activities	(1,482)	(1,493)
Cash flows from financing activities:
Capital contributions by non-controlling interests	490	245
Partnership distributions	(54)	(58)
Proceeds from offering of subsidiary equity	0	31
Dividends and distributions to non-controlling interests in subsidiaries	(51)	(115)
Proceeds from other borrowings	1,368	1,122
Repayments of other borrowings	(1,399)	(643)
Other, net	(16)	(15)
Net cash provided by financing activities	338	567
Effect of exchange rate changes on cash and cash equivalents	(18)	15
Net change in cash of assets held for sale	12	0
Net decrease in cash and cash equivalents	(158)	(758)
Cash and cash equivalents, beginning of period	2,078	2,912
Cash and cash equivalents, end of period	1,920	2,154
Supplemental information:
Cash payments for interest, net of amounts capitalized	318	312
Net cash payments (refunds) for income taxes	52	(14)
Investment in Pep Boys prior to acquiring a controlling interest	160	0
Investment in Trump prior to acquiring a controlling interest	126	0
LP unit issuance for remaining 25% interest in ARL	35	0
Subsidiary common unit issuance for acquisition of CVR Nitrogen	336	0
Fair value of equity investment in Ferrous Resources prior to acquisition of controlling interest	0	36
Changes in liabilities from non-cash acquisitions of property, plant and equipment	18	26
Icahn Enterprises Holdings [Member]
Cash flows from operating activities:
Net (loss) income	(1,893)	964
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Net loss (gain) from securities transactions	627	(1,020)
Purchases of securities	(1,211)	(542)
Proceeds from sales of securities	5,880	1,515
Purchases to cover securities sold, not yet purchased	(42)	(186)
Proceeds from securities sold, not yet purchased	475	895
Changes in receivables and payables relating to securities transactions	(5,046)	(1,463)
Depreciation and amortization	488	418
Impairment	577	4
Equity earnings from non-consolidated affiliates	(36)	(32)
Deferred taxes	4	75
Other, net	63	(14)
Changes in cash held at consolidated affiliated partnerships and restricted cash	589	(322)
Changes in other operating assets and liabilities	517	(139)
Net cash provided by operating activities	992	153
Cash flows from investing activities:
Capital expenditures	(421)	(729)
Acquisition of businesses, net of cash acquired	(1,042)	(786)
Purchases of investments	(75)	(107)
Proceeds from sale of investments	46	68
Other, net	10	61
Net cash used in investing activities	(1,482)	(1,493)
Cash flows from financing activities:
Capital contributions by non-controlling interests	490	245
Partnership distributions	(54)	(58)
Proceeds from offering of subsidiary equity	0	31
Dividends and distributions to non-controlling interests in subsidiaries	(51)	(115)
Proceeds from other borrowings	1,368	1,122
Repayments of other borrowings	(1,399)	(643)
Other, net	(16)	(15)
Net cash provided by financing activities	338	567
Effect of exchange rate changes on cash and cash equivalents	(18)	15
Net change in cash of assets held for sale	12	0
Net decrease in cash and cash equivalents	(158)	(758)
Cash and cash equivalents, beginning of period	2,078	2,912
Cash and cash equivalents, end of period	1,920	2,154
Supplemental information:
Cash payments for interest, net of amounts capitalized	318	312
Net cash payments (refunds) for income taxes	52	(14)
Investment in Pep Boys prior to acquiring a controlling interest	160	0
Investment in Trump prior to acquiring a controlling interest	126	0
LP unit issuance for remaining 25% interest in ARL	35	0
Subsidiary common unit issuance for acquisition of CVR Nitrogen	336	0
Fair value of equity investment in Ferrous Resources prior to acquisition of controlling interest	0	36
Changes in liabilities from non-cash acquisitions of property, plant and equipment	$ 18	$ 26