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Notes Payable Line of Credit Due 2011 (Details) (Line of Credit 2006 [Member], USD $) In Millions, unless otherwise specified | Dec. 31, 2011 Years banks
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Line of Credit 2006 [Member] |
Line of Credit Facility [Line Items] |
Line of Credit Facility, Maximum Borrowing Capacity | $ 150
Line of Credit, Number of Banks in Agreement | 8
Line of Credit, Length of Credit Agreement, Years | 5
Line of Credit, LIBOR Basis Spread on Variable Rate | 0.80%
Line of Credit, Federal Funds Rate Basis Spread on Variable Rate | 0.50%

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- Definition The percentage points added to the federal funds rate to compute the variable rate on the line of credit. + References No definition available. + Details
Name: | ael_LineOfCreditFederalFundsRateBasisSpreadOnVariableRate
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- 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

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- Definition The percentage points added to LIBOR to compute the variable rate on the line of credit. + References No definition available. + Details
Name: | ael_LineOfCreditLiborBasisSpreadOnVariableRate
Namespace Prefix: | ael_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- 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

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

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