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Notes Payable Line of Credit Due 2014 (Details) (Line of Credit 2011 [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 Years banks
Line of Credit 2011 [Member] |
Line of Credit Facility [Line Items] |
Cash In Excess of Required by Covenants | $ 109.5
Line of Credit Facility, Maximum Borrowing Capacity | $ 160
Line of Credit, Number of Banks in Agreement | 7
Line of Credit, Length of Credit Agreement, Years | 3
Line of Credit, Interest Rate, Floating, Applicable Margin | 2.00%
Line of Credit, Interest Rate, Floating, Adjusted LIBOR | 3.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.50%
Minimum Risk-Based Captial Ratio | 275.00%
Maximum Debt to Capital Ratio | 0.35
Minimum Cash Coverage Ratio | 100.00%
Minimum Capital to be Retained | 80.00%
Minimum Portion of Net Income to be Retained | 50.00%
Minimum Capital Contributions to be Retained | 50.00%

X
- Definition The amount of cash and cash equivalents reported on the balance sheet that is in excess of the amount required to be held by debt or credit agreement covenants. + References No definition available. + Details
Name: | ael_CashInExcessOfRequiredByCovenants
Namespace Prefix: | ael_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The variable interest rate on a revolving line of credit 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. + References No definition available. + Details
Name: | ael_LineOfCreditInterestRateFloatingAdjustedLibor
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The variable interest rate on a revolving line of credit that is equal to an alternate base rate (as defined in the credit agreement) plus the applicable margin that is equal to this value. + References No definition available. + Details
Name: | ael_LineOfCreditInterestRateFloatingApplicableMargin
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The length of time in years of the revolving credit agreement. + References No definition available. + Details
Name: | ael_LineOfCreditLengthOfCreditAgreementYears
Namespace Prefix: | ael_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of banks listed in the revolving line of credit agreement. + References No definition available. + Details
Name: | ael_LineOfCreditNumberOfBanksInAgreement
Namespace Prefix: | ael_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the maximum debt to capital ratio in relation to the 2011 line of credit agreement. + References No definition available. + Details
Name: | ael_MaximumDebtToCapitalRatio
Namespace Prefix: | ael_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the minimum captial contributions subsequent to 9/30/10 that are to be retained under the debt coventants related to the 2011 line of credit agreement. + References No definition available. + Details
Name: | ael_MinimumCapitalContributionsToBeRetained
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of minimum capital that must be retained from the balance at 12/31/10 under the debt coventants for the 2011 line of credit agreement. + References No definition available. + Details
Name: | ael_MinimumCapitalToBeRetained
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the minum cash coverage ratio related to the debt covenants under the 2011 line of credit agreement. + References No definition available. + Details
Name: | ael_MinimumCashCoverageRatio
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the minimum portion of net income that is to be retained subsequent to 12/31/10 under the debt covenants related to the 2011 line of credit agreement. + References No definition available. + Details
Name: | ael_MinimumPortionOfNetIncomeToBeRetained
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the minimum risk-based captial ratio required under debt coventants related to the 2011 line of credit agreement. + References No definition available. + Details
Name: | ael_MinimumRiskBasedCaptialRatio
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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