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Condensed Balance Sheets By Reporting Segment (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014
ASSETS |  |  |  |
Cash and cash equivalents | $ 1,876 | $ 2,868 | $ 2,078 | $ 2,912
Cash held at consolidated affiliated partnerships and restricted cash | 751 |  | 1,282 |
Investments | 10,026 |  | 15,351 |
Accounts receivable, net | 1,839 |  | 1,685 |
Inventories, net | 2,896 |  | 2,259 |
Property, plant and equipment, net | 10,572 |  | 9,535 |
Goodwill and intangible assets, net | 2,406 |  | 2,612 |
Other assets | 1,916 |  | 1,601 |
Total assets | 32,282 |  | 36,403 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 6,252 |  | 4,441 |
Securities sold, not yet purchased, at fair value | 1,052 |  | 794 |
Due to brokers | 2,710 |  | 7,317 |
Post-employment benefit liability | 1,230 |  | 1,224 |
Debt | 12,530 |  | 12,594 |
Total assets | 23,774 |  | 26,370 |
Equity attributable to Icahn Enterprises | 2,516 |  | 3,987 |
Equity attributable to non-controlling interests | 5,992 |  | 6,046 |
Total equity | 8,508 | 12,735 | 10,033 | 12,390
Total liabilities and equity | 32,282 |  | 36,403 |
Interest expense | 241 | 270 |  |
Net (loss) income | (1,609) | 422 |  |
Net (loss) income attributable to Icahn Enterprises | (837) | 161 |  |
Investment Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 12 |  | 10 |
Cash held at consolidated affiliated partnerships and restricted cash | 663 |  | 1,199 |
Investments | 9,271 |  | 14,553 |
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 | 630 |  | 378 |
Total assets | 10,576 |  | 16,140 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 924 |  | 488 |
Securities sold, not yet purchased, at fair value | 1,052 |  | 794 |
Due to brokers | 2,710 |  | 7,317 |
Post-employment benefit liability | 0 |  | 0 |
Debt | 0 |  | 0 |
Total assets | 4,686 |  | 8,599 |
Equity attributable to Icahn Enterprises | 1,820 |  | 3,428 |
Equity attributable to non-controlling interests | 4,070 |  | 4,113 |
Total equity | 5,890 |  | 7,541 |
Total liabilities and equity | 10,576 |  | 16,140 |
Interest expense | 87 | 123 |  |
Net (loss) income | (983) | 396 |  |
Net (loss) income attributable to Icahn Enterprises | (450) | 184 |  |
Automotive Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 309 |  | 201 |
Cash held at consolidated affiliated partnerships and restricted cash | 4 |  | 0 |
Investments | 313 |  | 296 |
Accounts receivable, net | 1,546 |  | 1,418 |
Inventories, net | 2,342 |  | 1,656 |
Property, plant and equipment, net | 3,281 |  | 2,386 |
Goodwill and intangible assets, net | 1,915 |  | 1,556 |
Other assets | 576 |  | 430 |
Total assets | 10,286 |  | 7,943 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 3,000 |  | 2,061 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 1,169 |  | 1,163 |
Debt | 3,282 |  | 3,135 |
Total assets | 7,451 |  | 6,359 |
Equity attributable to Icahn Enterprises | 2,502 |  | 1,270 |
Equity attributable to non-controlling interests | 333 |  | 314 |
Total equity | 2,835 |  | 1,584 |
Total liabilities and equity | 10,286 |  | 7,943 |
Interest expense | 39 | 36 |  |
Net (loss) income | 28 | (20) |  |
Net (loss) income attributable to Icahn Enterprises | 21 | (18) |  |
Energy Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 682 |  | 765 |
Cash held at consolidated affiliated partnerships and restricted cash | 0 |  | 0 |
Investments | 5 |  | 0 |
Accounts receivable, net | 110 |  | 96 |
Inventories, net | 259 |  | 290 |
Property, plant and equipment, net | 2,692 |  | 2,698 |
Goodwill and intangible assets, net | 332 |  | 911 |
Other assets | 103 |  | 128 |
Total assets | 4,183 |  | 4,888 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 1,327 |  | 1,366 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 0 |  | 0 |
Debt | 668 |  | 667 |
Total assets | 1,995 |  | 2,033 |
Equity attributable to Icahn Enterprises | 1,119 |  | 1,508 |
Equity attributable to non-controlling interests | 1,069 |  | 1,347 |
Total equity | 2,188 |  | 2,855 |
Total liabilities and equity | 4,183 |  | 4,888 |
Interest expense | 11 | 12 |  |
Net (loss) income | (614) | 75 |  |
Net (loss) income attributable to Icahn Enterprises | (353) | 43 |  |
Metals Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 6 |  | 12 |
Cash held at consolidated affiliated partnerships and restricted cash | 5 |  | 4 |
Investments | 0 |  | 0 |
Accounts receivable, net | 27 |  | 26 |
Inventories, net | 39 |  | 39 |
Property, plant and equipment, net | 112 |  | 116 |
Goodwill and intangible assets, net | 4 |  | 5 |
Other assets | 13 |  | 13 |
Total assets | 206 |  | 215 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 30 |  | 30 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 2 |  | 2 |
Debt | 0 |  | 1 |
Total assets | 32 |  | 33 |
Equity attributable to Icahn Enterprises | 174 |  | 182 |
Equity attributable to non-controlling interests | 0 |  | 0 |
Total equity | 174 |  | 182 |
Total liabilities and equity | 206 |  | 215 |
Interest expense | 0 | 0 |  |
Net (loss) income | (6) | (9) |  |
Net (loss) income attributable to Icahn Enterprises | (6) | (9) |  |
Railcar Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 346 |  | 623 |
Cash held at consolidated affiliated partnerships and restricted cash | 52 |  | 53 |
Investments | 27 |  | 27 |
Accounts receivable, net | 34 |  | 36 |
Inventories, net | 76 |  | 97 |
Property, plant and equipment, net | 2,772 |  | 2,767 |
Goodwill and intangible assets, net | 7 |  | 7 |
Other assets | 88 |  | 71 |
Total assets | 3,402 |  | 3,681 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 297 |  | 299 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 8 |  | 8 |
Debt | 2,461 |  | 2,671 |
Total assets | 2,766 |  | 2,978 |
Equity attributable to Icahn Enterprises | 423 |  | 742 |
Equity attributable to non-controlling interests | 213 |  | (39) |
Total equity | 636 |  | 703 |
Total liabilities and equity | 3,402 |  | 3,681 |
Interest expense | 23 | 20 |  |
Net (loss) income | 50 | 44 |  |
Net (loss) income attributable to Icahn Enterprises | 36 | 27 |  |
Gaming Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 251 |  | 217 |
Cash held at consolidated affiliated partnerships and restricted cash | 11 |  | 14 |
Investments | 42 |  | 26 |
Accounts receivable, net | 12 |  | 9 |
Inventories, net | 0 |  | 0 |
Property, plant and equipment, net | 886 |  | 740 |
Goodwill and intangible assets, net | 91 |  | 74 |
Other assets | 221 |  | 201 |
Total assets | 1,514 |  | 1,281 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 143 |  | 118 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 0 |  | 0 |
Debt | 288 |  | 289 |
Total assets | 431 |  | 407 |
Equity attributable to Icahn Enterprises | 816 |  | 604 |
Equity attributable to non-controlling interests | 267 |  | 270 |
Total equity | 1,083 |  | 874 |
Total liabilities and equity | 1,514 |  | 1,281 |
Interest expense | 3 | 3 |  |
Net (loss) income | 6 | 7 |  |
Net (loss) income attributable to Icahn Enterprises | 3 | 5 |  |
Mining segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 5 |  | 14 |
Cash held at consolidated affiliated partnerships and restricted cash | 0 |  | 0 |
Investments | 0 |  | 0 |
Accounts receivable, net | 3 |  | 4 |
Inventories, net | 29 |  | 32 |
Property, plant and equipment, net | 135 |  | 134 |
Goodwill and intangible assets, net | 0 |  | 0 |
Other assets | 20 |  | 19 |
Total assets | 192 |  | 203 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 32 |  | 30 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 0 |  | 0 |
Debt | 50 |  | 50 |
Total assets | 82 |  | 80 |
Equity attributable to Icahn Enterprises | 85 |  | 95 |
Equity attributable to non-controlling interests | 25 |  | 28 |
Total equity | 110 |  | 123 |
Total liabilities and equity | 192 |  | 203 |
Interest expense | 1 | 0 |  |
Net (loss) income | (13) | 0 |  |
Net (loss) income attributable to Icahn Enterprises | (10) | 0 |  |
Food Packaging Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 37 |  | 37 |
Cash held at consolidated affiliated partnerships and restricted cash | 2 |  | 1 |
Investments | 0 |  | 0 |
Accounts receivable, net | 62 |  | 60 |
Inventories, net | 80 |  | 77 |
Property, plant and equipment, net | 152 |  | 152 |
Goodwill and intangible assets, net | 8 |  | 8 |
Other assets | 85 |  | 81 |
Total assets | 426 |  | 416 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 64 |  | 62 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 51 |  | 51 |
Debt | 267 |  | 267 |
Total assets | 382 |  | 380 |
Equity attributable to Icahn Enterprises | 29 |  | 23 |
Equity attributable to non-controlling interests | 15 |  | 13 |
Total equity | 44 |  | 36 |
Total liabilities and equity | 426 |  | 416 |
Interest expense | 3 | 3 |  |
Net (loss) income | 4 | 0 |  |
Net (loss) income attributable to Icahn Enterprises | 3 | 0 |  |
Real Estate Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 11 |  | 19 |
Cash held at consolidated affiliated partnerships and restricted cash | 2 |  | 2 |
Investments | 0 |  | 0 |
Accounts receivable, net | 3 |  | 2 |
Inventories, net | 0 |  | 0 |
Property, plant and equipment, net | 467 |  | 467 |
Goodwill and intangible assets, net | 46 |  | 48 |
Other assets | 161 |  | 163 |
Total assets | 690 |  | 701 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 14 |  | 17 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 0 |  | 0 |
Debt | 27 |  | 28 |
Total assets | 41 |  | 45 |
Equity attributable to Icahn Enterprises | 649 |  | 656 |
Equity attributable to non-controlling interests | 0 |  | 0 |
Total equity | 649 |  | 656 |
Total liabilities and equity | 690 |  | 701 |
Interest expense | 1 | 1 |  |
Net (loss) income | 4 | 23 |  |
Net (loss) income attributable to Icahn Enterprises | 4 | 23 |  |
Home Fashion Segment [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 5 |  | 14 |
Cash held at consolidated affiliated partnerships and restricted cash | 9 |  | 6 |
Investments | 0 |  | 0 |
Accounts receivable, net | 42 |  | 34 |
Inventories, net | 71 |  | 68 |
Property, plant and equipment, net | 72 |  | 72 |
Goodwill and intangible assets, net | 3 |  | 3 |
Other assets | 6 |  | 9 |
Total assets | 208 |  | 206 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 33 |  | 30 |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 0 |  | 0 |
Debt | 0 |  | 0 |
Total assets | 33 |  | 30 |
Equity attributable to Icahn Enterprises | 175 |  | 176 |
Equity attributable to non-controlling interests | 0 |  | 0 |
Total equity | 175 |  | 176 |
Total liabilities and equity | 208 |  | 206 |
Interest expense | 0 | 0 |  |
Net (loss) income | 0 | (1) |  |
Net (loss) income attributable to Icahn Enterprises | 0 | (1) |  |
Holding Company [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 212 |  | 166 |
Cash held at consolidated affiliated partnerships and restricted cash | 3 |  | 3 |
Investments | 368 |  | 449 |
Accounts receivable, net | 0 |  | 0 |
Inventories, net | 0 |  | 0 |
Property, plant and equipment, net | 3 |  | 3 |
Goodwill and intangible assets, net | 0 |  | 0 |
Other assets | 13 |  | 108 |
Total assets | 599 |  | 729 |
LIABILITIES AND EQUITY |  |  |  |
Accounts payable, accrued expenses and other liabilities | 388 |  | (60) |
Securities sold, not yet purchased, at fair value | 0 |  | 0 |
Due to brokers | 0 |  | 0 |
Post-employment benefit liability | 0 |  | 0 |
Debt | 5,487 |  | 5,486 |
Total assets | 5,875 |  | 5,426 |
Equity attributable to Icahn Enterprises | (5,276) |  | (4,697) |
Equity attributable to non-controlling interests | 0 |  | 0 |
Total equity | (5,276) |  | (4,697) |
Total liabilities and equity | 599 |  | 729 |
Interest expense | 73 | 72 |  |
Net (loss) income | (85) | (93) |  |
Net (loss) income attributable to Icahn Enterprises | (85) | (93) |  |
Holding Company [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 1,876 | 2,868 | 2,078 | 2,912
Cash held at consolidated affiliated partnerships and restricted cash | 751 |  | 1,282 |
Investments | 10,026 |  | 15,351 |
Accounts receivable, net | 1,839 |  | 1,685 |
Inventories, net | 2,896 |  | 2,259 |
Property, plant and equipment, net | 10,572 |  | 9,535 |
Total assets | 32,306 |  | 36,427 |
LIABILITIES AND EQUITY |  |  |  |
Securities sold, not yet purchased, at fair value | 1,052 |  | 794 |
Due to brokers | 2,710 |  | 7,317 |
Post-employment benefit liability | 1,230 |  | 1,224 |
Debt | 12,530 |  | 12,594 |
Total assets | 23,774 |  | 26,370 |
Equity attributable to Icahn Enterprises | 2,540 |  | 4,011 |
Equity attributable to non-controlling interests | 5,992 |  | 6,046 |
Total equity | 8,532 | 12,758 | 10,057 | $ 12,413
Total liabilities and equity | 32,306 |  | 36,427 |
Interest expense | 241 | 270 |  |
Net (loss) income | (1,609) | 422 |  |
Net (loss) income attributable to Icahn Enterprises | (837) | 161 |  |
Holding Company [Member] | Investment Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 10,576 |  | 16,140 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 87 | 123 |  |
Net (loss) income | (983) | 396 |  |
Net (loss) income attributable to Icahn Enterprises | (450) | 184 |  |
Holding Company [Member] | Automotive Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 10,286 |  | 7,943 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 39 | 36 |  |
Net (loss) income | 28 | (20) |  |
Net (loss) income attributable to Icahn Enterprises | 21 | (18) |  |
Holding Company [Member] | Energy Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 4,183 |  | 4,888 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 11 | 12 |  |
Net (loss) income | (614) | 75 |  |
Net (loss) income attributable to Icahn Enterprises | (353) | 43 |  |
Holding Company [Member] | Metals Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 206 |  | 215 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 0 | 0 |  |
Net (loss) income | (6) | (9) |  |
Net (loss) income attributable to Icahn Enterprises | (6) | (9) |  |
Holding Company [Member] | Railcar Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 3,402 |  | 3,681 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 23 | 20 |  |
Net (loss) income | 50 | 44 |  |
Net (loss) income attributable to Icahn Enterprises | 36 | 27 |  |
Holding Company [Member] | Gaming Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 1,514 |  | 1,281 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 3 | 3 |  |
Net (loss) income | 6 | 7 |  |
Net (loss) income attributable to Icahn Enterprises | 3 | 5 |  |
Holding Company [Member] | Mining segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 192 |  | 203 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 1 | 0 |  |
Net (loss) income | (13) | 0 |  |
Net (loss) income attributable to Icahn Enterprises | (10) | 0 |  |
Holding Company [Member] | Food Packaging Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 426 |  | 416 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 3 | 3 |  |
Net (loss) income | 4 | 0 |  |
Net (loss) income attributable to Icahn Enterprises | 3 | 0 |  |
Holding Company [Member] | Real Estate Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 690 |  | 701 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 1 | 1 |  |
Net (loss) income | 4 | 23 |  |
Net (loss) income attributable to Icahn Enterprises | 4 | 23 |  |
Holding Company [Member] | Home Fashion Segment [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 208 |  | 206 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 0 | 0 |  |
Net (loss) income | 0 | (1) |  |
Net (loss) income attributable to Icahn Enterprises | 0 | (1) |  |
Holding Company [Member] | Holding Company [Member] |  |  |  |
ASSETS |  |  |  |
Total assets | 623 |  | $ 753 |
LIABILITIES AND EQUITY |  |  |  |
Interest expense | 73 | 72 |  |
Net (loss) income | (85) | (93) |  |
Net (loss) income attributable to Icahn Enterprises | $ (85) | $ (93) |  |

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