CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) - USD ($) $ in Millions	General partner Capital Units Icahn Enterprises Holdings	General partner Capital Units	Limited partners Capital Units Icahn Enterprises Holdings	Limited partners Capital Units	Total Partners' Equity Icahn Enterprises Holdings	Total Partners' Equity	Non-controlling Interests Icahn Enterprises Holdings	Non-controlling Interests	Icahn Enterprises Holdings	Total
Total equity at Dec. 31, 2019	$ (875)	$ (812)	$ 6,328	$ 6,268	$ 5,453	$ 5,456	$ 5,486	$ 5,486	$ 10,939	$ 10,942
Increase (Decrease) in Equity
Net income (loss)	(14)	(28)	(1,370)	(1,356)	(1,384)	(1,384)	(922)	(922)	(2,306)	(2,306)
Other comprehensive income (loss)			(3)	(3)	(3)	(3)			(3)	(3)
Partnership distributions payable reversal	(4)		(433)		(437)				(437)
Partnership distributions		(9)		(428)		(437)				(437)
Partnership contributions			7	7	7	7			7	7
Investment segment contributions from non-controlling interests							1,241	1,241	1,241	1,241
Dividends and distributions to non-controlling interests in subsidiaries							(23)	(23)	(23)	(23)
Changes in subsidiary equity and other			(4)	(4)	(4)	(4)			(4)	(4)
Total equity at Mar. 31, 2020	(893)	(849)	4,525	4,484	3,632	3,635	5,782	5,782	9,414	9,417
Total equity at Dec. 31, 2019	(875)	(812)	6,328	6,268	5,453	5,456	5,486	5,486	10,939	10,942
Increase (Decrease) in Equity
Net income (loss)									(2,842)	(2,842)
Other comprehensive income (loss)									1	1
Total equity at Sep. 30, 2020	(897)	(856)	4,124	4,086	3,227	3,230	5,643	5,643	8,870	8,873
Total equity at Mar. 31, 2020	(893)	(849)	4,525	4,484	3,632	3,635	5,782	5,782	9,414	9,417
Increase (Decrease) in Equity
Net income (loss)	3	6	296	293	299	299	565	565	864	864
Other comprehensive income (loss)			1	1	1	1	1	1	2	2
Partnership distributions payable reversal	4	9	433	428	437	437			437	437
Partnership distributions	(5)	(9)	(456)	(452)	(461)	(461)			(461)	(461)
Partnership contributions			19	19	19	19			19	19
Dividends and distributions to non-controlling interests in subsidiaries							(13)	(13)	(13)	(13)
Changes in subsidiary equity and other	1	1	1	1	2	2	(2)	(2)
Total equity at Jun. 30, 2020	(890)	(842)	4,819	4,774	3,929	3,932	6,333	6,333	10,262	10,265
Increase (Decrease) in Equity
Net income (loss)	(7)	(14)	(707)	(700)	(714)	(714)	(686)	(686)	(1,400)	(1,400)
Other comprehensive income (loss)			2	2	2	2			2	2
Partnership distributions		(1)	(32)	(31)	(32)	(32)			(32)	(32)
Partnership contributions		1	35	34	35	35			35	35
Changes in subsidiary equity and other			7	7	7	7	(4)	(4)	3	3
Total equity at Sep. 30, 2020	(897)	(856)	4,124	4,086	3,227	3,230	5,643	5,643	8,870	8,873
Total equity at Dec. 31, 2020	(896)	(853)	4,277	4,236	3,381	3,383	5,875	5,875	9,256	9,258
Increase (Decrease) in Equity
Net income (loss)	2	3	160	159	162	162	437	437	599	599
Other comprehensive income (loss)			(1)	(1)	(1)	(1)			(1)	(1)
Partnership distributions	(5)	(10)	(494)	(489)	(499)	(499)			(499)	(499)
Partnership contributions	2	4	184	182	186	186			186	186
Investment segment contributions from non-controlling interests							40	40	40	40
Changes in subsidiary equity and other			(1)	(1)	(1)	(1)			(1)	(1)
Total equity at Mar. 31, 2021	(897)	(856)	4,125	4,086	3,228	3,230	6,352	6,352	9,580	9,582
Total equity at Dec. 31, 2020	(896)	(853)	4,277	4,236	3,381	3,383	5,875	5,875	9,256	9,258
Increase (Decrease) in Equity
Net income (loss)									327	326
Other comprehensive income (loss)									(3)	(3)
Total equity at Sep. 30, 2021	(892)	(846)	4,661	4,616	3,769	3,770	6,237	6,237	10,006	10,007
Total equity at Mar. 31, 2021	(897)	(856)	4,125	4,086	3,228	3,230	6,352	6,352	9,580	9,582
Increase (Decrease) in Equity
Net income (loss)	(2)	(2)	(133)	(134)	(135)	(136)	74	74	(61)	(62)
Other comprehensive income (loss)			2	2	2	2	1	1	3	3
Partnership distributions payable reversal	5	10	494	489	499	499			499	499
Partnership distributions	(1)	(1)	(56)	(56)	(57)	(57)			(57)	(57)
Partnership contributions	2	4	200	198	202	202			202	202
Investment segment contributions from non-controlling interests							6	6	6	6
Dividends and distributions to non-controlling interests in subsidiaries							(144)	(144)	(144)	(144)
Changes in subsidiary equity and other		(1)	(5)	(4)	(5)	(5)	1	1	(4)	(4)
Total equity at Jun. 30, 2021	(893)	(846)	4,627	4,581	3,734	3,735	6,290	6,290	10,024	10,025
Increase (Decrease) in Equity
Net income (loss)	(1)	(3)	(147)	(145)	(148)	(148)	(63)	(63)	(211)	(211)
Other comprehensive income (loss)			(4)	(4)	(4)	(4)	(1)	(1)	(5)	(5)
Partnership distributions		(1)	(36)	(35)	(36)	(36)			(36)	(36)
Partnership contributions	2	4	220	218	222	222			222	222
Investment segment contributions from non-controlling interests							22	22	22	22
Dividends and distributions to non-controlling interests in subsidiaries							(11)	(11)	(11)	(11)
Changes in subsidiary equity and other			1	1	1	1			1	1
Total equity at Sep. 30, 2021	$ (892)	$ (846)	$ 4,661	$ 4,616	$ 3,769	$ 3,770	$ 6,237	$ 6,237	$ 10,006	$ 10,007