Net Income (Loss) Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended		9 Months Ended
	Aug. 03, 2022	May 06, 2022	Feb. 23, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per LP Unit [Line Items]
Net Income (Loss) Attributable to Parent				$ (123)	$ (148)	$ 72	$ (122)
Net Income (Loss) Allocated to Limited Partners				$ (121)	$ (145)	$ 71	$ (120)
Basic (loss) income per LP unit				$ (0.37)	$ (0.55)	$ 0.23	$ (0.47)
Basic weighted average LP units outstanding				324,000,000	266,000,000	308,000,000	253,000,000
Diluted (loss) income per LP unit				$ (0.37)	$ (0.55)	$ 0.23	$ (0.47)
Diluted weighted average LP units outstanding				324,000,000	266,000,000	308,000,000	253,000,000
Aggregate cash distributions to depositary unit holders						$ 158
Partners' Capital Account, Units, Sale of Units				3,130,267		10,677,046
Proceeds from Sale of Interest in Partnership Unit				$ 163		$ 557
Potential aggregate sales proceeds from equity offering						$ 128
Incentive Plan 2017 [Member]
Earnings Per LP Unit [Line Items]
Units distributed to LP unitholders						29,342
Limited partners
Earnings Per LP Unit [Line Items]
Distribution declared per LP unit	$ 2.00	$ 2.00	$ 2.00
Units distributed to LP unitholders						33,364,320
Mr. Icahn and affiliates
Earnings Per LP Unit [Line Items]
Units distributed to LP unitholders						31,508,966
Icahn Enterprises Holdings LP
Earnings Per LP Unit [Line Items]
Affiliate ownership interest						98.01%