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Net Income (Loss) Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	May 31, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per LP Unit [Line Items]
Net loss income attributable to Icahn Enterprises from continuing operations		$ (183)	$ (518)	$ (1,653)
Basic loss per LP unit		$ (0.57)	$ (2.32)	$ (7.33)
Basic weighted average LP units outstanding		316,000,000	260,000,000	221,000,000
Diluted loss per LP unit		$ (0.57)	$ (2.32)	$ (7.33)
Diluted weighted average LP units outstanding		316,000,000	260,000,000	221,000,000
Limited partners: Depositary units issued		353,572,182	293,403,243	241,338,835	214,078,558
Units distributed to LP unitholders		45,520,325	36,875,398	25,352,178
2017 LTIP units vested		29,342	18,491
Partners' Capital Account, Units, Sale of Units		14,619,272	15,170,519	1,908,099
Proceeds from Sale of Interest in Partnership Unit		$ 759
Potential aggregate sales proceeds from equity offering	$ 400	325
General partner
Earnings Per LP Unit [Line Items]
Less: net income attributable to Icahn Enterprises from continuing operations allocated 100% to general partner		(4)	$ (98)
Limited partners
Earnings Per LP Unit [Line Items]
Net loss income attributable to Icahn Enterprises from continuing operations		(179)	(604)	$ 1,620
Net loss attributable to Icahn Enterprises from continuing operations allocable to limited partners		$ (187)	$ (616)	$ (1,653)
Mr. Icahn and affiliates
Earnings Per LP Unit [Line Items]
Limited partners: Depositary units issued		299,997,624	257,047,260	221,749,462	197,049,652
Units distributed to LP unitholders		42,950,364	35,297,798	24,902,568
Mr. Icahn and affiliates | Brett Icahn
Earnings Per LP Unit [Line Items]
Partners' Capital Account, Units, Trasfer of Units				(202,758)
Public unitholders
Earnings Per LP Unit [Line Items]
Limited partners: Depositary units issued		53,574,558	36,355,983	19,589,373	17,028,906
Units distributed to LP unitholders		2,569,961	1,577,600	449,610
2017 LTIP units vested		29,342	18,491
Partners' Capital Account, Units, Sale of Units			15,170,519	1,908,099
Public unitholders | Brett Icahn
Earnings Per LP Unit [Line Items]
Partners' Capital Account, Units, Sale of Units		14,619,272
Partners' Capital Account, Units, Trasfer of Units				202,758
Icahn Enterprises Holdings LP
Earnings Per LP Unit [Line Items]
Affiliate ownership interest		98.01%

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