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Debt (Details) € in Millions, $ in Millions				3 Months Ended	6 Months Ended
	Jun. 29, 2017 USD ($)	Mar. 30, 2017 USD ($)	Jan. 18, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 29, 2017 EUR (€)	Mar. 30, 2017 EUR (€)
Automotive Segment
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ (2)	$ (4)
6.25% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings | Holding Company
Debt Instrument [Line Items]
Debt face amount			$ 695
Interest rate on debt			6.25%
6.75% senior unsecured notes due 2024 - Icahn Enterprises/Icahn Enterprises Holdings | Holding Company
Debt Instrument [Line Items]
Debt face amount			$ 500
Interest rate on debt			6.75%
New 2022 and 2024 Notes | Holding Company
Debt Instrument [Line Items]
Proceeds from issuance of debt			$ 1,190
Federal-Mogul 2022 Notes | Automotive Segment
Debt Instrument [Line Items]
Debt face amount | €							€ 415
Interest rate on debt							4.875%
Federal-Mogul 2024 Notes | Automotive Segment
Debt Instrument [Line Items]
Debt face amount | €						€ 350	€ 300
Interest rate on debt						5.00%
Federal-Mogul 2022 and 2024 Notes | Automotive Segment
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 395	$ 776

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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