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Summary of Significant Accounting Policies - Sales Return Reserve (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Feb. 03, 2024 | Jan. 28, 2023 | Jan. 29, 2022
Accounting Policies [Abstract] |  |  |
Beginning balance | $ 10,369 | $ 9,168 | $ 8,377
Returns | (161,833) | (150,987) | (149,988)
Provisions | 162,230 | 152,188 | 150,779
Ending balance | $ 10,766 | $ 10,369 | $ 9,168

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- Definition Sales Return Reserve + References No definition available. + Details
Name: | aeo_SalesReturnReserve
Namespace Prefix: | aeo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Sales Return Reserve Adjustments + References No definition available. + Details
Name: | aeo_SalesReturnReserveAdjustments
Namespace Prefix: | aeo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Sales returns. + References No definition available. + Details
Name: | aeo_SalesReturns
Namespace Prefix: | aeo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration