XML 44 R31.htm IDEA: XBRL DOCUMENT
v3.21.2

Investments (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
Investment Segment |
Schedule of Investments [Line Items] |
Investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2021 |  | 2020
​ | ​ | (in millions)
Assets | ​ | ​ | ​ | ​ | ​ | ​
Investments: |  | ​ |  |  | ​ |
Equity securities: |  | ​ |  |  | ​ |
Consumer, non-cyclical | ​ | $ | 566 | ​ | $ | 1,548
Consumer, cyclical | ​ |  | 2,660 | ​ |  | 2,073
Energy | ​ |  | 3,237 | ​ |  | 2,654
Utilities | ​ |  | 706 | ​ |  | 107
Healthcare | ​ |  | 1,025 | ​ |  | —
Technology | ​ |  | 1,848 | ​ |  | 1,578
Materials | ​ |  | 187 | ​ |  | —
Industrial | ​ |  | 258 | ​ |  | 158
​ | ​ |  | 10,487 | ​ |  | 8,118
Corporate debt securities | ​ |  | 116 | ​ |  | 121
​ | ​ | $ | 10,603 | ​ | $ | 8,239
Liabilities | ​ |  |  | ​ |  |
Securities sold, not yet purchased, at fair value: | ​ |  |  | ​ |  |
Equity securities: | ​ |  |  | ​ |  |
Consumer, non-cyclical | ​ | $ | 202 | ​ | $ | 424
Consumer, cyclical | ​ |  | 607 | ​ |  | 572
Energy | ​ |  | 2,143 | ​ |  | 1,476
Utilities | ​ |  | 422 | ​ |  | 49
Healthcare | ​ |  | 674 | ​ |  | —
Materials | ​ |  | 183 | ​ |  | —
​ | ​ | $ | 4,231 | ​ | $ | 2,521
Other Segments and Holding Company |
Schedule of Investments [Line Items] |
Investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ |  | 2021 |  | 2020
​ | ​ | (in millions)
Equity method investments | ​ | $ | 98 | ​ | $ | 120
Held to maturity debt investments measured at amortized cost | ​ | ​ | 20 | ​ | ​ | 20
Other investments measured at fair value | ​ |  | 182 | ​ |  | 534
​ | ​ | $ | 300 | ​ | $ | 674

X
- Definition Tabular disclosure of investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -URI http://asc.fasb.org/topic&trid=2197064 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -URI http://asc.fasb.org/topic&trid=75115024 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
Name: | us-gaap_InvestmentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_InvestmentSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_OtherSegmentsAndHoldingCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |