aggregate consideration for business disposed of

No definition available.

Name:	iep_Aggregateconsiderationforbusinessdisposedof
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Aggregate consideration for business to be disposed of

+ References

No definition available.

+ Details

Name:	iep_Aggregateconsiderationforbusinesstobedisposedof
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Common units validly tendered and not properly withdrawn

+ References

No definition available.

+ Details

Name:	iep_Commonunitsvalidlytenderedandnotproperlywithdrawn
Namespace Prefix:	iep_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

consideration in non-voting shares for business disposed of

+ References

No definition available.

+ Details

Name:	iep_Considerationinnonvotingsharesforbusinessdisposedof
Namespace Prefix:	iep_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

consideration in shares for business disposed of

+ References

No definition available.

+ Details

Name:	iep_Considerationinsharesforbusinessdisposedof
Namespace Prefix:	iep_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

consideration in voting shares for business disposed of

+ References

No definition available.

+ Details

Name:	iep_Considerationinvotingsharesforbusinessdisposedof
Namespace Prefix:	iep_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Contribution to subsidiary

+ References

No definition available.

+ Details

Name:	iep_Contributiontosubsidiary
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

[Line Items] for Description of Business

+ References

No definition available.

+ Details

Name:	iep_DescriptionofBusinessLineItems
Namespace Prefix:	iep_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

fair market value of shares obtained as consideration for business disposed of

+ References

No definition available.

+ Details

Name:	iep_Fairmarketvalueofsharesobtainedasconsiderationforbusinessdisposedof
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Ownership percentage in a non-consolidated entity by non-controlling owner

+ References

No definition available.

+ Details

Name:	iep_Investmentownershippercentage
Namespace Prefix:	iep_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Aggregate Ownership interest of Parent and Holding Company Subsidiaries

+ References

No definition available.

+ Details

Name:	iep_LimitedLiabilityCompanyLlcOrLimitedPartnershipLpManagingMemberOrGeneralPartnerAggregateOwnershipInterestOfParentAndHoldingCompanySubsidiaries
Namespace Prefix:	iep_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Proceeds From Rights Offering

+ References

No definition available.

+ Details

Name:	iep_ProceedsFromRightsOffering
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The fair value of investment held in the subsidiary investment funds by the limited liability company or limited partnership.

+ References

No definition available.

+ Details

Name:	iep_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterestFairValue
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Subsidiary repurchase of treasury stock

+ References

No definition available.

+ Details

Name:	iep_Subsidiaryrepurchaseoftreasurystock
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total consideration received from sale of asset

+ References

No definition available.

+ Details

Name:	iep_Totalconsiderationreceivedfromsaleofasset
Namespace Prefix:	iep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents a sale (new stock issuance) by a subsidiary to noncontrolling interests (third parties, parties directly or indirectly unrelated to parent) during the period. The capital transaction by subsidiary does not result in a loss of control by the parent, but does effect a change in total (consolidated) equity attributable to the parent.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

+ Details

Name:	us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIssuanceOfEquityBySubsidiaryToNoncontrollingInterests
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainLossOnDispositionOfAssets1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of the noncash (or part noncash) consideration received in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

+ Details

Name:	us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow associated with the purchase of noncontrolling interest during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010

+ Details

Name:	us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=iep_EnergySegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=iep_AutomotiveSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=iep_FoodPackagingSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=iep_RealEstateSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_FirstMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_SecondMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=iep_RailcarSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_IcahnEnterprisesHoldingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_InvestmentFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_CvrRefiningLpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_CVRNitrogenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_CvrPartnersLpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_CvrEnergyIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_AAMCOandPrecisionTuneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_PepBoysMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_ViskaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_ArlMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_FerrousResourcesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_FederalMogulMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_TropicanaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=iep_AriMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	iep_MembersOrPartnersAxis=iep_PrincipalOwnersAndAffiliatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	iep_MembersOrPartnersAxis=iep_IcahnEnterprisesGPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

(Details) - USD ($) $ in Millions							1 Months Ended				3 Months Ended	12 Months Ended
(Details) - USD ($) $ in Millions	Jan. 29, 2019	Dec. 05, 2018	Oct. 01, 2018	Aug. 01, 2018	Apr. 01, 2016	Feb. 04, 2016	Aug. 31, 2018	Jan. 31, 2018	Aug. 31, 2017	Jan. 31, 2017	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Description of Business [Line Items]
Affiliate ownership interest												98.01%
Purchase of additional interests in consolidated subsidiaries												$ 5	$ 349	$ 2
Gain on disposition of assets, net												84	2,163	6
Proceeds from disposition of businesses and assets												3,370	1,983	31
Seller financing secured mortgages resulting from disposition of assets												0	375	0
Energy Segment
Description of Business [Line Items]
Gain on disposition of assets, net												(6)	(3)	0
Automotive Segment
Description of Business [Line Items]
Gain on disposition of assets, net												(1)	5	1
Food Packaging Segment
Description of Business [Line Items]
Gain on disposition of assets, net												0	0	0
Real Estate Segment
Description of Business [Line Items]
Gain on disposition of assets, net							$ 89		$ 456			89	496	1
Proceeds from disposition of businesses and assets							$ 179		225
Seller financing secured mortgages resulting from disposition of assets									375
Total consideration received from sale of asset									600
Real Estate Segment \| First Mortgage
Description of Business [Line Items]
Seller financing secured mortgages resulting from disposition of assets									345
Real Estate Segment \| Second Mortgage
Description of Business [Line Items]
Seller financing secured mortgages resulting from disposition of assets									$ 30
Railcar Segment
Description of Business [Line Items]
Gain on disposition of assets, net												$ 5	1,664	3
Icahn Enterprises Holdings
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												99.00%
Purchase of additional interests in consolidated subsidiaries												$ 5	349	2
Gain on disposition of assets, net												84	2,163	6
Proceeds from disposition of businesses and assets												3,370	1,983	$ 31
Investment Funds
Description of Business [Line Items]
Fair value of investment in subsidiary											$ 5,100	$ 5,100	3,000
CVR Refining
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												3.90%
Common units validly tendered and not properly withdrawn				21,625,106
CVR Refining \| Energy Segment
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												80.60%
CVR Nitrogen \| Energy Segment
Description of Business [Line Items]
Fair value of subsidiary common units issued in a business combination					$ 335
Payments to acquire businesses					99
Fair value of debt assumed in business combination					$ 368
CVR Partners \| Energy Segment
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												34.40%
CVR Energy
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												70.80%
Equity issued to acquire additional interest in consolidated subsidiary (number of units)				13,699,549
Change in equity as a result of acquisition of additional interest in consolidated subsidiary				$ 99
ADS and Precision Tune \| Automotive Segment
Description of Business [Line Items]
Payments to acquire businesses													$ 162
Pep Boys \| Automotive Segment
Description of Business [Line Items]
Total consideration for acquisition of business						$ 1,200
Viskase \| Food Packaging Segment
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												78.60%	74.60%
Proceeds from rights offering								$ 50
Contribution to subsidiary								$ 44
ARL \| Railcar Segment
Description of Business [Line Items]
Gain on disposition of assets, net												$ 5	$ 1,700
Proceeds from disposition of businesses and assets												$ 17
aggregate consideration for business disposed of													$ 1,800
Ferrous Resources
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												77.20%
Aggregate consideration for business to be disposed of		$ 550
Federal-Mogul
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												100.00%		82.00%
Purchase of additional interests in consolidated subsidiaries										$ 305
Contribution to subsidiary												$ 56
Gain on disposition of assets, net											251
Proceeds from disposition of businesses and assets			$ 800
consideration in shares for business disposed of			29,500,000
consideration in non-voting shares for business disposed of			23,800,000
consideration in voting shares for business disposed of			5,700,000
investment, ownership percentage			9.90%
fair market value of shares obtained as consideration for business disposed of			$ 1,200
Tropicana
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												83.90%	72.50%
Purchase of additional interests in consolidated subsidiaries												$ 95
Gain on disposition of assets, net											779
Proceeds from disposition of businesses and assets			1,500
aggregate consideration for business disposed of			$ 1,800
Subsidiary repurchase of treasury stock												$ 36
ARI
Description of Business [Line Items]
Gain on disposition of assets, net											$ 400
Proceeds from disposition of businesses and assets		$ 831
Mr. Icahn and affiliates
Description of Business [Line Items]
Affiliate ownership interest												91.70%
Icahn Enterprises G.P.
Description of Business [Line Items]
General partner ownership percentage in Icahn Enterprises												1.00%
Aggregate general partner ownership interest of parent and operating subsidiary												1.99%
Icahn Enterprises G.P. \| Icahn Enterprises Holdings
Description of Business [Line Items]
General partner ownership percentage in Icahn Enterprises												1.00%
Subsequent event \| CVR Refining \| Energy Segment
Description of Business [Line Items]
Purchase of additional interests in consolidated subsidiaries	$ 241