Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 771	$ 562
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain from securities transactions	(1,141)	(786)
Purchases of securities	(3,625)	(1,325)
Proceeds from sales of securities	794	5,558
Purchases to cover securities sold, not yet purchased	(1)	(4,872)
Proceeds from securities sold, not yet purchased	79	781
Changes in receivables and payables relating to securities transactions	2,495	(2,088)
Loss on disposal of assets	52	0
Depreciation and amortization	330	253
Deferred taxes	64	(194)
Other, net	(16)	47
Changes in cash held at consolidated affiliated partnerships and restricted cash	384	3,608
Changes in other operating assets and liabilities	248	(137)
Net cash provided by operating activities	434	1,407
Cash flows from investing activities:
Capital expenditures	(509)	(429)
Net payments associated with business dispositions	(25)	0
Acquisitions of businesses, net of cash acquired	0	(1,291)
Proceeds from sale of investments	13	170
Purchases of investments	(46)	(210)
Other, net	4	17
Net cash used in investing activities	(563)	(1,743)
Cash flows from financing activities:
Investment segment distributions	0	(17)
Investment segment contributions	45	0
Proceeds from equity offerings	317	510
Partnership distributions	(13)	(20)
Proceeds from offering of subsidiary equity	1,242	0
Distributions to non-controlling interests in subsidiaries	(259)	0
Proceeds from issuance of senior unsecured notes	0	716
Proceeds from other borrowings	145	163
Repayments of borrowings	(456)	(63)
Change in restricted cash relating to variable rate note discharge	(600)	0
Other, net	(4)	(22)
Net cash provided by financing activities	417	1,267
Effect of exchange rate changes on cash and cash equivalents	(19)	0
Net increase in cash and cash equivalents	269	931
Cash and cash equivalents, beginning of period	3,071	2,278
Cash and cash equivalents, end of period	3,340	3,209
Supplemental information:
Cash payments for interest, net of amounts capitalized	250	192
Net cash payments for income taxes	86	50
Distribution payable to LP unitholders	110	0
Net unrealized gain (loss) on available-for-sale securities	2	(2)
Icahn Enterprises Holdings [Member]
Cash flows from operating activities:
Net income	771	562
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain from securities transactions	(1,141)	(786)
Purchases of securities	(3,625)	(1,325)
Proceeds from sales of securities	794	5,558
Purchases to cover securities sold, not yet purchased	(1)	(4,872)
Proceeds from securities sold, not yet purchased	79	781
Changes in receivables and payables relating to securities transactions	2,495	(2,088)
Loss on disposal of assets	52	0
Depreciation and amortization	330	253
Deferred taxes	64	(194)
Other, net	(16)	47
Changes in cash held at consolidated affiliated partnerships and restricted cash	384	3,608
Changes in other operating assets and liabilities	248	(137)
Net cash provided by operating activities	434	1,407
Cash flows from investing activities:
Capital expenditures	(509)	(429)
Net payments associated with business dispositions	(25)	0
Acquisitions of businesses, net of cash acquired	0	(1,291)
Proceeds from sale of investments	13	170
Purchases of investments	(46)	(210)
Other, net	4	17
Net cash used in investing activities	(563)	(1,743)
Cash flows from financing activities:
Investment segment distributions	0	(17)
Investment segment contributions	45	0
Proceeds from equity offerings	317	510
Partnership distributions	(13)	(20)
Proceeds from offering of subsidiary equity	1,242	0
Distributions to non-controlling interests in subsidiaries	(259)	0
Proceeds from issuance of senior unsecured notes	0	716
Proceeds from other borrowings	145	163
Repayments of borrowings	(456)	(63)
Change in restricted cash relating to variable rate note discharge	(600)	0
Other, net	(4)	(22)
Net cash provided by financing activities	417	1,267
Effect of exchange rate changes on cash and cash equivalents	(19)	0
Net increase in cash and cash equivalents	269	931
Cash and cash equivalents, beginning of period	3,071	2,278
Cash and cash equivalents, end of period	3,340	3,209
Supplemental information:
Cash payments for interest, net of amounts capitalized	250	192
Net cash payments for income taxes	86	50
Distribution payable to LP unitholders	110	0
Net unrealized gain (loss) on available-for-sale securities	$ 2	$ (2)