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Condensed Balance Sheets By Reporting Segment (Details) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash and cash equivalents | $ 1,250 | $ 1,682 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 643 | 786 |  |
Investments | 8,364 | 10,369 |  |
Accounts receivable, net | 1,914 | 1,805 |  |
Inventories, net | 3,497 | 3,261 |  |
Property, plant and equipment, net | 9,733 | 9,701 |  |
Goodwill and intangible assets, net | 2,391 | 2,410 |  |
Other assets | 2,706 | 1,787 |  |
Total assets | 30,498 | 31,801 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 6,037 | 6,009 |  |
Securities sold, not yet purchased, at fair value | 299 | 1,023 |  |
Due to brokers | 38 | 1,057 |  |
Post-retirement benefit liability | 1,161 | 1,159 |  |
Debt | 11,208 | 11,185 |  |
Total liabilities | 18,743 | 20,433 |  |
Equity attributable to Icahn Enterprises | 4,945 | 5,106 |  |
Equity attributable to non-controlling interests | 6,810 | 6,262 |  |
Total equity | 11,755 | 11,368 | $ 8,567 | $ 8,017
Total liabilities and equity | 30,498 | 31,801 |  |
Investment Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 20 | 17 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 587 | 734 |  |
Investments | 7,518 | 9,532 |  |
Accounts receivable, net | 0 | 0 |  |
Inventories, net | 0 | 0 |  |
Property, plant and equipment, net | 0 | 0 |  |
Goodwill and intangible assets, net | 0 | 0 |  |
Other assets | 1,270 | 516 |  |
Total assets | 9,395 | 10,799 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 959 | 1,302 |  |
Securities sold, not yet purchased, at fair value | 299 | 1,023 |  |
Due to brokers | 38 | 1,057 |  |
Post-retirement benefit liability | 0 | 0 |  |
Debt | 0 | 0 |  |
Total liabilities | 1,296 | 3,382 |  |
Equity attributable to Icahn Enterprises | 3,214 | 3,052 |  |
Equity attributable to non-controlling interests | 4,885 | 4,365 |  |
Total equity | 8,099 | 7,417 |  |
Total liabilities and equity | 9,395 | 10,799 |  |
Automotive Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 278 | 367 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 5 | 4 |  |
Investments | 312 | 324 |  |
Accounts receivable, net | 1,511 | 1,406 |  |
Inventories, net | 2,776 | 2,601 |  |
Property, plant and equipment, net | 3,570 | 3,503 |  |
Goodwill and intangible assets, net | 1,952 | 1,963 |  |
Other assets | 627 | 541 |  |
Total assets | 11,031 | 10,709 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 2,875 | 2,770 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 1,072 | 1,075 |  |
Debt | 3,499 | 3,470 |  |
Total liabilities | 7,446 | 7,315 |  |
Equity attributable to Icahn Enterprises | 3,419 | 3,234 |  |
Equity attributable to non-controlling interests | 166 | 160 |  |
Total equity | 3,585 | 3,394 |  |
Total liabilities and equity | 11,031 | 10,709 |  |
Energy Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 420 | 482 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 0 | 0 |  |
Investments | 83 | 83 |  |
Accounts receivable, net | 179 | 178 |  |
Inventories, net | 424 | 385 |  |
Property, plant and equipment, net | 3,168 | 3,213 |  |
Goodwill and intangible assets, net | 293 | 298 |  |
Other assets | 138 | 61 |  |
Total assets | 4,705 | 4,700 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 1,085 | 1,125 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 0 | 0 |  |
Debt | 1,167 | 1,166 |  |
Total liabilities | 2,252 | 2,291 |  |
Equity attributable to Icahn Enterprises | 1,134 | 1,098 |  |
Equity attributable to non-controlling interests | 1,319 | 1,311 |  |
Total equity | 2,453 | 2,409 |  |
Total liabilities and equity | 4,705 | 4,700 |  |
Railcar Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 100 | 100 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 19 | 19 |  |
Investments | 22 | 23 |  |
Accounts receivable, net | 33 | 44 |  |
Inventories, net | 73 | 54 |  |
Property, plant and equipment, net | 1,202 | 1,199 |  |
Goodwill and intangible assets, net | 7 | 7 |  |
Other assets | 31 | 41 |  |
Total assets | 1,487 | 1,487 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 268 | 254 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 8 | 8 |  |
Debt | 539 | 546 |  |
Total liabilities | 815 | 808 |  |
Equity attributable to Icahn Enterprises | 419 | 428 |  |
Equity attributable to non-controlling interests | 253 | 251 |  |
Total equity | 672 | 679 |  |
Total liabilities and equity | 1,487 | 1,487 |  |
Gaming Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 119 | 105 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 16 | 16 |  |
Investments | 23 | 23 |  |
Accounts receivable, net | 10 | 11 |  |
Inventories, net | 0 | 0 |  |
Property, plant and equipment, net | 809 | 808 |  |
Goodwill and intangible assets, net | 74 | 74 |  |
Other assets | 95 | 102 |  |
Total assets | 1,146 | 1,139 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 86 | 104 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 0 | 0 |  |
Debt | 137 | 137 |  |
Total liabilities | 223 | 241 |  |
Equity attributable to Icahn Enterprises | 782 | 761 |  |
Equity attributable to non-controlling interests | 141 | 137 |  |
Total equity | 923 | 898 |  |
Total liabilities and equity | 1,146 | 1,139 |  |
Metals Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 17 | 24 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 5 | 5 |  |
Investments | 0 | 0 |  |
Accounts receivable, net | 60 | 40 |  |
Inventories, net | 29 | 33 |  |
Property, plant and equipment, net | 108 | 110 |  |
Goodwill and intangible assets, net | 3 | 3 |  |
Other assets | 18 | 11 |  |
Total assets | 240 | 226 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 52 | 41 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 2 | 2 |  |
Debt | 1 | 1 |  |
Total liabilities | 55 | 44 |  |
Equity attributable to Icahn Enterprises | 185 | 182 |  |
Equity attributable to non-controlling interests | 0 | 0 |  |
Total equity | 185 | 182 |  |
Total liabilities and equity | 240 | 226 |  |
Mining segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 13 | 15 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 0 | 0 |  |
Investments | 0 | 0 |  |
Accounts receivable, net | 8 | 10 |  |
Inventories, net | 30 | 30 |  |
Property, plant and equipment, net | 198 | 188 |  |
Goodwill and intangible assets, net | 0 | 0 |  |
Other assets | 23 | 22 |  |
Total assets | 272 | 265 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 49 | 45 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 0 | 0 |  |
Debt | 58 | 58 |  |
Total liabilities | 107 | 103 |  |
Equity attributable to Icahn Enterprises | 143 | 138 |  |
Equity attributable to non-controlling interests | 22 | 24 |  |
Total equity | 165 | 162 |  |
Total liabilities and equity | 272 | 265 |  |
Food Packaging Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 54 | 16 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 1 | 2 |  |
Investments | 0 | 0 |  |
Accounts receivable, net | 76 | 78 |  |
Inventories, net | 99 | 92 |  |
Property, plant and equipment, net | 170 | 170 |  |
Goodwill and intangible assets, net | 36 | 36 |  |
Other assets | 97 | 93 |  |
Total assets | 533 | 487 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 90 | 98 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 79 | 74 |  |
Debt | 271 | 273 |  |
Total liabilities | 440 | 445 |  |
Equity attributable to Icahn Enterprises | 69 | 28 |  |
Equity attributable to non-controlling interests | 24 | 14 |  |
Total equity | 93 | 42 |  |
Total liabilities and equity | 533 | 487 |  |
Real Estate Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 29 | 30 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 2 | 2 |  |
Investments | 0 | 0 |  |
Accounts receivable, net | 3 | 3 |  |
Inventories, net | 0 | 0 |  |
Property, plant and equipment, net | 437 | 438 |  |
Goodwill and intangible assets, net | 26 | 29 |  |
Other assets | 390 | 390 |  |
Total assets | 887 | 892 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 46 | 46 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 0 | 0 |  |
Debt | 21 | 22 |  |
Total liabilities | 67 | 68 |  |
Equity attributable to Icahn Enterprises | 820 | 824 |  |
Equity attributable to non-controlling interests | 0 | 0 |  |
Total equity | 820 | 824 |  |
Total liabilities and equity | 887 | 892 |  |
Home Fashion Segment |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 1 | 0 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 8 | 4 |  |
Investments | 0 | 0 |  |
Accounts receivable, net | 34 | 35 |  |
Inventories, net | 66 | 66 |  |
Property, plant and equipment, net | 71 | 72 |  |
Goodwill and intangible assets, net | 0 | 0 |  |
Other assets | 5 | 6 |  |
Total assets | 185 | 183 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 37 | 34 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 0 | 0 |  |
Debt | 9 | 5 |  |
Total liabilities | 46 | 39 |  |
Equity attributable to Icahn Enterprises | 139 | 144 |  |
Equity attributable to non-controlling interests | 0 | 0 |  |
Total equity | 139 | 144 |  |
Total liabilities and equity | 185 | 183 |  |
Holding Company |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 199 | 526 |  |
Cash held at consolidated affiliated partnerships and restricted cash | 0 | 0 |  |
Investments | 406 | 384 |  |
Accounts receivable, net | 0 | 0 |  |
Inventories, net | 0 | 0 |  |
Property, plant and equipment, net | 0 | 0 |  |
Goodwill and intangible assets, net | 0 | 0 |  |
Other assets | 12 | 4 |  |
Total assets | 617 | 914 |  |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 490 | 190 |  |
Securities sold, not yet purchased, at fair value | 0 | 0 |  |
Due to brokers | 0 | 0 |  |
Post-retirement benefit liability | 0 | 0 |  |
Debt | 5,506 | 5,507 |  |
Total liabilities | 5,996 | 5,697 |  |
Equity attributable to Icahn Enterprises | (5,379) | (4,783) |  |
Equity attributable to non-controlling interests | 0 | 0 |  |
Total equity | (5,379) | (4,783) |  |
Total liabilities and equity | $ 617 | $ 914 |  |

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