Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended
	Feb. 22, 2023	Apr. 30, 2023	Mar. 31, 2023	Mar. 31, 2022
Net Income Per LP Unit [Line Items]
Net (loss) income attributable to Icahn Enterprises			$ (270)	$ 323
Net (loss) income attributable to Icahn Enterprises allocated to limited partners (98.01% allocation)			$ (265)	$ 317
Basic (loss) income per LP unit			$ (0.75)	$ 1.08
Basic weighted average LP units outstanding			354,000,000	294,000,000
Diluted (loss) income per LP unit			$ (0.75)	$ 1.06
Diluted weighted average LP units outstanding			354,000,000	299,000,000
Aggregate cash distributions to depositary unit holders		$ 70
Unit distribution liability			$ 724
Partners' Capital Account, Units, Sale of Units			3,395,353
Proceeds from Sale of Interest in Partnership Unit			$ 175
Potential aggregate sales proceeds from equity offering			$ 149
Antidilutive securities excluded from computation of earnings per share			5,741,711
Limited partners
Net Income Per LP Unit [Line Items]
Distribution declared per LP unit	$ 2.00
Units distributed to LP unitholders		12,224,701
Mr. Icahn and affiliates
Net Income Per LP Unit [Line Items]
Units distributed to LP unitholders		11,480,036
Icahn Enterprises Holdings LP
Net Income Per LP Unit [Line Items]
Affiliate ownership interest			98.01%