XML 11 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document and Entity Information Document - shares
 9 Months Ended
Sep. 30, 2018
Nov. 08, 2018
Entity Information [Line Items]    
Entity Registrant Name ICAHN ENTERPRISES L.P.  
Trading Symbol IEP  
Entity Central Index Key 0000813762  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   186,650,073
Entity Current Reporting Status Yes  
Icahn Enterprises Holdings    
Entity Information [Line Items]    
Entity Registrant Name ICAHN ENTERPRISES HOLDINGS L.P.  
Entity Central Index Key 0001034563  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   0
Entity Current Reporting Status Yes