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Condensed Balance Sheets By Reporting Segment (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | --- | --- | ---
ASSETS |  |  |  |  |  |
Cash and cash equivalents | $ 4,008 |  | $ 2,656 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 664 |  | 2,682 |  |  |
Investments | 8,858 |  | 8,337 |  |  |
Accounts receivable, net | 508 |  | 474 |  |  |
Inventories, net | 1,851 |  | 1,779 |  |  |
Property, plant and equipment, net | 4,630 |  | 4,688 |  |  |
Goodwill and intangible assets, net | 742 |  | 748 |  |  |
Assets held for sale | 400 |  | 333 |  |  |
Other assets | 2,687 |  | 1,792 |  |  |
Assets | 24,348 |  | 23,489 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 3,934 |  | 2,603 |  |  |
Securities sold, not yet purchased, at fair value | 146 |  | 468 |  |  |
Liabilities held for sale | 164 |  | 112 |  |  |
Debt | 8,658 |  | 7,326 |  |  |
Total liabilities | 12,902 |  | 10,509 |  |  |
Equity attributable to Icahn Enterprises | 5,691 |  | 6,560 |  |  |
Equity attributable to non-controlling interests | 5,755 |  | 6,420 |  |  |
Total equity | 11,446 | $ 11,652 | 12,980 | $ 12,544 | $ 11,862 | $ 11,486
Liabilities and Equity | 24,348 |  | 23,489 |  |  |
Investment Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 8 |  | 5 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 651 |  | 2,648 |  |  |
Investments | 8,191 |  | 6,867 |  |  |
Accounts receivable, net | 0 |  | 0 |  |  |
Inventories, net | 0 |  | 0 |  |  |
Property, plant and equipment, net | 0 |  | 0 |  |  |
Goodwill and intangible assets, net | 0 |  | 0 |  |  |
Assets held for sale | 0 |  | 0 |  |  |
Other assets | 1,508 |  | 1,230 |  |  |
Assets | 10,358 |  | 10,750 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 923 |  | 181 |  |  |
Securities sold, not yet purchased, at fair value | 146 |  | 468 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 0 |  | 0 |  |  |
Total liabilities | 1,069 |  | 649 |  |  |
Equity attributable to Icahn Enterprises | 4,624 |  | 5,066 |  |  |
Equity attributable to non-controlling interests | 4,665 |  | 5,035 |  |  |
Total equity | 9,289 |  | 10,101 |  |  |
Liabilities and Equity | 10,358 |  | 10,750 |  |  |
Energy Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 540 |  | 668 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 0 |  | 0 |  |  |
Investments | 82 |  | 84 |  |  |
Accounts receivable, net | 168 |  | 169 |  |  |
Inventories, net | 390 |  | 380 |  |  |
Property, plant and equipment, net | 2,950 |  | 3,027 |  |  |
Goodwill and intangible assets, net | 268 |  | 278 |  |  |
Assets held for sale | 6 |  | 33 |  |  |
Other assets | 227 |  | 192 |  |  |
Assets | 4,631 |  | 4,831 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 1,076 |  | 1,043 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 1,195 |  | 1,170 |  |  |
Total liabilities | 2,271 |  | 2,213 |  |  |
Equity attributable to Icahn Enterprises | 1,317 |  | 1,274 |  |  |
Equity attributable to non-controlling interests | 1,043 |  | 1,344 |  |  |
Total equity | 2,360 |  | 2,618 |  |  |
Liabilities and Equity | 4,631 |  | 4,831 |  |  |
Automotive Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 53 |  | 43 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 0 |  | 0 |  |  |
Investments | 107 |  | 59 |  |  |
Accounts receivable, net | 170 |  | 149 |  |  |
Inventories, net | 1,231 |  | 1,203 |  |  |
Property, plant and equipment, net | 939 |  | 941 |  |  |
Goodwill and intangible assets, net | 388 |  | 412 |  |  |
Assets held for sale | 0 |  | 0 |  |  |
Other assets | 736 |  | 217 |  |  |
Assets | 3,624 |  | 3,024 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 1,374 |  | 905 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 406 |  | 372 |  |  |
Total liabilities | 1,780 |  | 1,277 |  |  |
Equity attributable to Icahn Enterprises | 1,844 |  | 1,747 |  |  |
Equity attributable to non-controlling interests | 0 |  | 0 |  |  |
Total equity | 1,844 |  | 1,747 |  |  |
Liabilities and Equity | 3,624 |  | 3,024 |  |  |
Food Packaging Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 22 |  | 46 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 1 |  | 1 |  |  |
Investments | 0 |  | 0 |  |  |
Accounts receivable, net | 82 |  | 74 |  |  |
Inventories, net | 111 |  | 93 |  |  |
Property, plant and equipment, net | 166 |  | 169 |  |  |
Goodwill and intangible assets, net | 31 |  | 32 |  |  |
Assets held for sale | 0 |  | 0 |  |  |
Other assets | 134 |  | 96 |  |  |
Assets | 547 |  | 511 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 206 |  | 164 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 270 |  | 273 |  |  |
Total liabilities | 476 |  | 437 |  |  |
Equity attributable to Icahn Enterprises | 54 |  | 55 |  |  |
Equity attributable to non-controlling interests | 17 |  | 19 |  |  |
Total equity | 71 |  | 74 |  |  |
Liabilities and Equity | 547 |  | 511 |  |  |
Metals Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 3 |  | 20 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 1 |  | 1 |  |  |
Investments | 0 |  | 0 |  |  |
Accounts receivable, net | 44 |  | 48 |  |  |
Inventories, net | 39 |  | 39 |  |  |
Property, plant and equipment, net | 124 |  | 115 |  |  |
Goodwill and intangible assets, net | 14 |  | 2 |  |  |
Assets held for sale | 1 |  | 1 |  |  |
Other assets | 20 |  | 7 |  |  |
Assets | 246 |  | 233 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 66 |  | 56 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 10 |  | 0 |  |  |
Total liabilities | 76 |  | 56 |  |  |
Equity attributable to Icahn Enterprises | 170 |  | 177 |  |  |
Equity attributable to non-controlling interests | 0 |  | 0 |  |  |
Total equity | 170 |  | 177 |  |  |
Liabilities and Equity | 246 |  | 233 |  |  |
Real Estate Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 41 |  | 39 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 2 |  | 26 |  |  |
Investments | 15 |  | 15 |  |  |
Accounts receivable, net | 4 |  | 3 |  |  |
Inventories, net | 0 |  | 0 |  |  |
Property, plant and equipment, net | 382 |  | 367 |  |  |
Goodwill and intangible assets, net | 19 |  | 24 |  |  |
Assets held for sale | 0 |  | 0 |  |  |
Other assets | 32 |  | 34 |  |  |
Assets | 495 |  | 508 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 41 |  | 41 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 2 |  | 2 |  |  |
Total liabilities | 43 |  | 43 |  |  |
Equity attributable to Icahn Enterprises | 452 |  | 465 |  |  |
Equity attributable to non-controlling interests | 0 |  | 0 |  |  |
Total equity | 452 |  | 465 |  |  |
Liabilities and Equity | 495 |  | 508 |  |  |
Home Fashion Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 4 |  | 1 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 1 |  | 2 |  |  |
Investments | 0 |  | 0 |  |  |
Accounts receivable, net | 40 |  | 31 |  |  |
Inventories, net | 80 |  | 64 |  |  |
Property, plant and equipment, net | 69 |  | 69 |  |  |
Goodwill and intangible assets, net | 22 |  | 0 |  |  |
Assets held for sale | 0 |  | 0 |  |  |
Other assets | 21 |  | 5 |  |  |
Assets | 237 |  | 172 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 62 |  | 35 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 20 |  | 4 |  |  |
Total liabilities | 82 |  | 39 |  |  |
Equity attributable to Icahn Enterprises | 155 |  | 133 |  |  |
Equity attributable to non-controlling interests | 0 |  | 0 |  |  |
Total equity | 155 |  | 133 |  |  |
Liabilities and Equity | 237 |  | 172 |  |  |
Mining Segment |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 0 |  | 0 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 0 |  | 0 |  |  |
Investments | 0 |  | 0 |  |  |
Accounts receivable, net | 0 |  | 0 |  |  |
Inventories, net | 0 |  | 0 |  |  |
Property, plant and equipment, net | 0 |  | 0 |  |  |
Goodwill and intangible assets, net | 0 |  | 0 |  |  |
Assets held for sale | 393 |  | 299 |  |  |
Other assets | 0 |  | 0 |  |  |
Assets | 393 |  | 299 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 0 |  | 0 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 164 |  | 112 |  |  |
Debt | 0 |  | 0 |  |  |
Total liabilities | 164 |  | 112 |  |  |
Equity attributable to Icahn Enterprises | 199 |  | 165 |  |  |
Equity attributable to non-controlling interests | 30 |  | 22 |  |  |
Total equity | 229 |  | 187 |  |  |
Liabilities and Equity | 393 |  | 299 |  |  |
Holding Company |  |  |  |  |  |
ASSETS |  |  |  |  |  |
Cash and cash equivalents | 3,337 |  | 1,834 |  |  |
Cash held at consolidated affiliated partnerships and restricted cash | 8 |  | 4 |  |  |
Investments | 463 |  | 1,312 |  |  |
Accounts receivable, net | 0 |  | 0 |  |  |
Inventories, net | 0 |  | 0 |  |  |
Property, plant and equipment, net | 0 |  | 0 |  |  |
Goodwill and intangible assets, net | 0 |  | 0 |  |  |
Assets held for sale | 0 |  | 0 |  |  |
Other assets | 9 |  | 11 |  |  |
Assets | 3,817 |  | 3,161 |  |  |
LIABILITIES AND EQUITY |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | 186 |  | 178 |  |  |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |  |  |
Liabilities held for sale | 0 |  | 0 |  |  |
Debt | 6,755 |  | 5,505 |  |  |
Total liabilities | 6,941 |  | 5,683 |  |  |
Equity attributable to Icahn Enterprises | (3,124) |  | (2,522) |  |  |
Equity attributable to non-controlling interests | 0 |  | 0 |  |  |
Total equity | (3,124) |  | (2,522) |  |  |
Liabilities and Equity | $ 3,817 |  | $ 3,161 |  |  |

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