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Debt Table (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Debt	$ 11,212	$ 11,119
Holding Company
Debt Instrument [Line Items]
Debt	5,507	5,490
Automotive Segment
Debt Instrument [Line Items]
Debt	3,334	3,259
Energy Segment
Debt Instrument [Line Items]
Debt	1,165	1,165
Railcar Segment
Debt Instrument [Line Items]
Debt	565	571
Gaming Segment
Debt Instrument [Line Items]
Debt	286	287
Food Packaging Segment
Debt Instrument [Line Items]
Debt	274	265
Senior unsecured notes | Holding Company | 6.75% senior unsecured notes due 2024 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	498	0
Senior unsecured notes | Holding Company | 6.25% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	692	0
Senior unsecured notes | Holding Company | 5.875% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,340	1,340
Senior unsecured notes | Holding Company | 6.00% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,705	1,705
Senior unsecured notes | Holding Company | 4.875% senior unsecured notes due 2019 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,272	1,271
Senior unsecured notes | Holding Company | 3.50% senior unsecured notes due 2017 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	0	1,174
Debt and credit facilities | Automotive Segment
Debt Instrument [Line Items]
Debt	3,321	3,249
Debt and credit facilities | Energy Segment
Debt Instrument [Line Items]
Debt	1,119	1,118
Debt and credit facilities | Railcar Segment
Debt Instrument [Line Items]
Debt	565	571
Debt and credit facilities | Gaming Segment
Debt Instrument [Line Items]
Debt	286	287
Debt and credit facilities | Food Packaging Segment
Debt Instrument [Line Items]
Debt	273	265
Capitalizes and other debt obligations
Debt Instrument [Line Items]
Debt	141	139
Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	11,216	11,122
Icahn Enterprises Holdings | Senior unsecured notes | Holding Company | 6.75% senior unsecured notes due 2024 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	499	0
Icahn Enterprises Holdings | Senior unsecured notes | Holding Company | 6.25% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	693	0
Icahn Enterprises Holdings | Senior unsecured notes | Holding Company | 5.875% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,341	1,341
Icahn Enterprises Holdings | Senior unsecured notes | Holding Company | 6.00% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,706	1,706
Icahn Enterprises Holdings | Senior unsecured notes | Holding Company | 4.875% senior unsecured notes due 2019 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	1,272	1,272
Icahn Enterprises Holdings | Senior unsecured notes | Holding Company | 3.50% senior unsecured notes due 2017 - Icahn Enterprises/Icahn Enterprises Holdings
Debt Instrument [Line Items]
Debt	0	1,174
Icahn Enterprises Holdings | Debt and credit facilities | Automotive Segment
Debt Instrument [Line Items]
Debt	3,321	3,249
Icahn Enterprises Holdings | Debt and credit facilities | Energy Segment
Debt Instrument [Line Items]
Debt	1,119	1,118
Icahn Enterprises Holdings | Debt and credit facilities | Railcar Segment
Debt Instrument [Line Items]
Debt	565	571
Icahn Enterprises Holdings | Debt and credit facilities | Gaming Segment
Debt Instrument [Line Items]
Debt	286	287
Icahn Enterprises Holdings | Debt and credit facilities | Food Packaging Segment
Debt Instrument [Line Items]
Debt	273	265
Icahn Enterprises Holdings | Capitalizes and other debt obligations
Debt Instrument [Line Items]
Debt	$ 141	$ 139

X

- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13,16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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