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Segment Reporting - Condensed Balance Sheets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | $ 2,337 | $ 2,321 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 2,549 | 2,115 |  |
Investments | 6,809 | 9,151 |  |
Accounts receivable, net | 606 | 546 |  |
Inventories | 1,531 | 1,478 |  |
Property, plant and equipment, net | 4,038 | 4,085 |  |
Goodwill and intangible assets, net | 821 | 885 |  |
Other assets | 9,223 | 7,165 |  |
Total Assets | 27,914 | 27,746 |  |
Accounts payable, accrued expenses and other liabilities | 4,765 | 5,371 |  |
Securities sold, not yet purchased, at fair value | 6,495 | 5,340 |  |
Debt | 7,096 | 7,692 |  |
Total liabilities | 18,356 | 18,403 |  |
Equity attributable to Icahn Enterprises | 3,900 | 3,544 |  |
Equity attributable to non-controlling interests | 5,658 | 5,799 |  |
Total equity | 9,558 | 9,343 | $ 9,258 | $ 10,942
Total Liabilities and Equity | 27,914 | 27,746 |  |
Investment Segment |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 19 | 19 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 2,455 | 2,008 |  |
Investments | 6,719 | 8,952 |  |
Other assets | 8,041 | 6,156 |  |
Total Assets | 17,234 | 17,135 |  |
Accounts payable, accrued expenses and other liabilities | 1,589 | 2,405 |  |
Securities sold, not yet purchased, at fair value | 6,495 | 5,340 |  |
Total liabilities | 8,084 | 7,745 |  |
Equity attributable to Icahn Enterprises | 4,184 | 4,271 |  |
Equity attributable to non-controlling interests | 4,966 | 5,119 |  |
Total equity | 9,150 | 9,390 |  |
Total Liabilities and Equity | 17,234 | 17,135 |  |
Energy Segment |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 510 | 510 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 7 | 7 |  |
Investments | 76 | 79 |  |
Accounts receivable, net | 358 | 299 |  |
Inventories | 624 | 484 |  |
Property, plant and equipment, net | 2,664 | 2,735 |  |
Goodwill and intangible assets, net | 200 | 221 |  |
Other assets | 296 | 252 |  |
Total Assets | 4,735 | 4,587 |  |
Accounts payable, accrued expenses and other liabilities | 1,823 | 1,579 |  |
Debt | 1,591 | 1,660 |  |
Total liabilities | 3,414 | 3,239 |  |
Equity attributable to Icahn Enterprises | 648 | 686 |  |
Equity attributable to non-controlling interests | 673 | 662 |  |
Total equity | 1,321 | 1,348 |  |
Total Liabilities and Equity | 4,735 | 4,587 |  |
Automotive Segment |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 32 | 28 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 10 | 17 |  |
Accounts receivable, net | 99 | 103 |  |
Inventories | 686 | 780 |  |
Property, plant and equipment, net | 826 | 786 |  |
Goodwill and intangible assets, net | 352 | 362 |  |
Other assets | 527 | 506 |  |
Total Assets | 2,532 | 2,582 |  |
Accounts payable, accrued expenses and other liabilities | 981 | 981 |  |
Debt | 21 | 26 |  |
Total liabilities | 1,002 | 1,007 |  |
Equity attributable to Icahn Enterprises | 1,530 | 1,575 |  |
Total equity | 1,530 | 1,575 |  |
Total Liabilities and Equity | 2,532 | 2,582 |  |
Food Packaging Segment |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 9 | 10 |  |
Accounts receivable, net | 87 | 82 |  |
Inventories | 103 | 93 |  |
Property, plant and equipment, net | 142 | 147 |  |
Goodwill and intangible assets, net | 24 | 27 |  |
Other assets | 110 | 99 |  |
Total Assets | 475 | 458 |  |
Accounts payable, accrued expenses and other liabilities | 149 | 146 |  |
Debt | 162 | 155 |  |
Total liabilities | 311 | 301 |  |
Equity attributable to Icahn Enterprises | 149 | 143 |  |
Equity attributable to non-controlling interests | 15 | 14 |  |
Total equity | 164 | 157 |  |
Total Liabilities and Equity | 475 | 458 |  |
Real Estate Segment |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 26 | 30 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 8 | 11 |  |
Investments | 14 | 15 |  |
Accounts receivable, net | 12 | 10 |  |
Property, plant and equipment, net | 345 | 351 |  |
Other assets | 102 | 109 |  |
Total Assets | 507 | 526 |  |
Accounts payable, accrued expenses and other liabilities | 47 | 49 |  |
Debt | 1 | 1 |  |
Total liabilities | 48 | 50 |  |
Equity attributable to Icahn Enterprises | 455 | 472 |  |
Equity attributable to non-controlling interests | 4 | 4 |  |
Total equity | 459 | 476 |  |
Total Liabilities and Equity | 507 | 526 |  |
Home Fashion Segment |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 5 | 3 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 3 |  |  |
Accounts receivable, net | 24 | 32 |  |
Inventories | 90 | 106 |  |
Property, plant and equipment, net | 56 | 60 |  |
Goodwill and intangible assets, net | 19 | 21 |  |
Other assets | 16 | 21 |  |
Total Assets | 213 | 243 |  |
Accounts payable, accrued expenses and other liabilities | 45 | 71 |  |
Debt | 12 | 40 |  |
Total liabilities | 57 | 111 |  |
Equity attributable to Icahn Enterprises | 156 | 132 |  |
Total equity | 156 | 132 |  |
Total Liabilities and Equity | 213 | 243 |  |
Pharma Segment |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 16 | 14 |  |
Accounts receivable, net | 26 | 20 |  |
Inventories | 28 | 15 |  |
Goodwill and intangible assets, net | 226 | 254 |  |
Other assets | 6 | 6 |  |
Total Assets | 302 | 309 |  |
Accounts payable, accrued expenses and other liabilities | 61 | 50 |  |
Total liabilities | 61 | 50 |  |
Equity attributable to Icahn Enterprises | 241 | 259 |  |
Total equity | 241 | 259 |  |
Total Liabilities and Equity | 302 | 309 |  |
Holding Company |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash and cash equivalents | 1,720 | 1,707 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 66 | 72 |  |
Investments |  | 105 |  |
Property, plant and equipment, net | 5 | 6 |  |
Other assets | 125 | 16 |  |
Total Assets | 1,916 | 1,906 |  |
Accounts payable, accrued expenses and other liabilities | 70 | 90 |  |
Debt | 5,309 | 5,810 |  |
Total liabilities | 5,379 | 5,900 |  |
Equity attributable to Icahn Enterprises | (3,463) | (3,994) |  |
Total equity | (3,463) | (3,994) |  |
Total Liabilities and Equity | $ 1,916 | $ 1,906 |  |

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