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Retirement and Share-based Compensation Plans (2014 Independent Insurance Agent Restricted Stock and Restricted Stock Unit Plan) (Details) (2014 Independent Insurance Agent Restricted Stock and Restricted Stock Unit Plan [Member], USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares authorized 1,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Commission expense $ 1.9us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
Share-based Compensation Award, Tranche One [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting rights, percentage 20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_PlanNameAxis
= ael_A2014IndependentInsuranceAgentRestrictedStockAndRestrictedStockUnitPlanMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheOneMember
Award vesting period 1 year
Share-based Compensation Award, Tranche Two [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting rights, percentage 80.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_PlanNameAxis
= ael_A2014IndependentInsuranceAgentRestrictedStockAndRestrictedStockUnitPlanMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Maximum [Member] | Share-based Compensation Award, Tranche Two [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 5 years
Restricted Stock [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Equity instruments granted 27,985us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= ael_A2014IndependentInsuranceAgentRestrictedStockAndRestrictedStockUnitPlanMember
Restricted Stock Units [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Equity instruments granted 221,489us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= ael_A2014IndependentInsuranceAgentRestrictedStockAndRestrictedStockUnitPlanMember