XML 52 R30.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Investments and Related Matters (Tables) (Other Segments [Member]) | 3 Months Ended
--- | ---
Mar. 31, 2013
Other Segments [Member] |
Investment and Related Matters [Line Items] |
Investment | The carrying value of investments held by our Automotive, Gaming, Railcar and Home Fashion segments and our Holding Company consist of the following:
| March 31, 2013 |  | December 31, 2012
| (in millions)
Equity method investments | $ | 303 |  |  | $ | 299 |
Other investments | 161 |  |  | 108 |
| $ | 464 |  |  | $ | 407 |

X
- Details
Name: | iep_InvestmentAndRelatedMattersLineItems
Namespace Prefix: | iep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A table of investments, shown as a text block. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 6 -Section 10 -Paragraph (c) -Subparagraph (1) + Details
Name: | invest_InvestmentTableTextBlock
Namespace Prefix: | invest_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration