v2.4.0.8
Document and Entity Information
9 Months Ended
Sep. 30, 2015
Oct. 29, 2015
Document and Entity Information    
Entity Registrant Name AMERICAN INTERNATIONAL GROUP INC  
Entity Central Index Key 0000005272  
Document Type 10-Q  
Document Period End Date Sep. 30, 2015  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer Yes  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   1,237,012,512
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q3