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INSURANCE LIABILITIES (Details - Discounting of Reserves) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2014
Discounting of Reserves [Line Items]    
Net loss reserve discount 3,100,000,000aig_LossReserveDiscount 3,100,000,000aig_LossReserveDiscount
Tabular discount rate   3.50%aig_WorkersCompensationDiscountPercentTabular
Property Casualty    
Discounting of Reserves [Line Items]    
Discount for workers' compensation 852,000,000aig_WorkersCompensationDiscountAmountTabular
/ us-gaap_StatementBusinessSegmentsAxis
= aig_AIGPropertyCasualtyOperatingSegmentMember
852,000,000aig_WorkersCompensationDiscountAmountTabular
/ us-gaap_StatementBusinessSegmentsAxis
= aig_AIGPropertyCasualtyOperatingSegmentMember
Discount for workers' compensation 2,200,000,000aig_WorkersCompensationDiscountAmountNonTabular
/ us-gaap_StatementBusinessSegmentsAxis
= aig_AIGPropertyCasualtyOperatingSegmentMember
2,200,000,000aig_WorkersCompensationDiscountAmountNonTabular
/ us-gaap_StatementBusinessSegmentsAxis
= aig_AIGPropertyCasualtyOperatingSegmentMember
Discount for asbestos 11,000,000aig_AsbestosClaimsDiscountAmount
/ us-gaap_StatementBusinessSegmentsAxis
= aig_AIGPropertyCasualtyOperatingSegmentMember
11,000,000aig_AsbestosClaimsDiscountAmount
/ us-gaap_StatementBusinessSegmentsAxis
= aig_AIGPropertyCasualtyOperatingSegmentMember
New York    
Discounting of Reserves [Line Items]    
Nontabular discount rate   0.00%aig_WorkersCompensationDiscountPercentNonTabular
/ us-gaap_StatementGeographicalAxis
= stpr_NY
Discount rate 5.00%us-gaap_WorkersCompensationDiscountPercent
/ us-gaap_StatementGeographicalAxis
= stpr_NY
 
Pennsylvania    
Discounting of Reserves [Line Items]    
Nontabular discount rate   0.00%aig_WorkersCompensationDiscountPercentNonTabular
/ us-gaap_StatementGeographicalAxis
= stpr_PA
Pennsylvania | Accident year 2001 and prior    
Discounting of Reserves [Line Items]    
Discount rate 6.00%us-gaap_WorkersCompensationDiscountPercent
/ aig_LossReservesAssociatedWithAccidentYearAxis
= aig_LossReservesAssociatedWithAccidentYear2001AndPriorMember
/ us-gaap_StatementGeographicalAxis
= stpr_PA
 
Pennsylvania | Accident year 2002 and subsequent years    
Discounting of Reserves [Line Items]    
Discount rate 4.25%us-gaap_WorkersCompensationDiscountPercent
/ aig_LossReservesAssociatedWithAccidentYearAxis
= aig_LossReservesAssociatedWithAccidentYear2002AndSubsequentYearMember
/ us-gaap_StatementGeographicalAxis
= stpr_PA