Name:	ael_CashInExcessOfRequiredByCovenants
Namespace Prefix:	ael_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The variable interest rate for all borrowings under the credit agreement that is equal to an alternate base rate (as defined in the drecit agreement) plus the adjusted LIBOR rate that is equal to this value.

No definition available.

Name:	ael_CreditAgreementInterestRateFloatingAdjustedLIBOR
Namespace Prefix:	ael_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The variable interest rate for all borrowings under the credit agreement that is equal to an alternate base rate (as defined in the credit agreement) plus the applicable margin that is equal to this value.

No definition available.

Name:	ael_CreditAgreementInterestRateFloatingApplicableMargin
Namespace Prefix:	ael_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The number of banks listed in the credit agreement.

No definition available.

Name:	ael_CreditAgreementNumberofBanksinAgreement
Namespace Prefix:	ael_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The number of guarantors under the credit agreement.

No definition available.

Name:	ael_CreditAgreementNumberofGuarantors
Namespace Prefix:	ael_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the minimum risk-based capital ratio required under debt covenants.

No definition available.

Name:	ael_DebtCovenantsMinimumRiskBasedCapitalRatio
Namespace Prefix:	ael_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The aggregate amount of the additional borrowing capacity of the Revolving Facility.

No definition available.

Name:	ael_LineOfCreditAdditionalBorrowingCapacityAggregateAmount
Namespace Prefix:	ael_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The duration of the maturity date extension available under the Revolving Facility.

No definition available.

Name:	ael_LineOfCreditMaturityDateExtension
Namespace Prefix:	ael_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The number of occasions the borrowing capacity of the Revolving Facility can be increased.

No definition available.

Name:	ael_LineOfCreditNumberOfOccasionsBorrowingCapacityCanBeIncreased
Namespace Prefix:	ael_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the maximum debt to capital ratio in relation to the credit agreement.

No definition available.

Name:	ael_MaximumDebtToCapitalRatio
Namespace Prefix:	ael_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

Represents the minimum capital contributions subsequent that are to be retained under the debt covenants related to the credit agreement.

No definition available.

Name:	ael_MinimumCapitalContributionsToBeRetained
Namespace Prefix:	ael_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the percentage of minimum capital that must be retained under the debt covenants for the credit agreement.

No definition available.

Name:	ael_MinimumCapitalToBeRetained
Namespace Prefix:	ael_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the minimum portion of net income that is to be retained under the debt covenants related to the credit agreement.

No definition available.

Name:	ael_MinimumPortionOfNetIncomeToBeRetained
Namespace Prefix:	ael_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

No definition available.

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_LineOfCreditFacilityAxis=ael_LineofCredit2013Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_DebtInstrumentAxis=ael_CreditAgreementSeptember302016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LineOfCreditFacilityAxis=ael_LineofCredit2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: