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Segment Reporting - Summary of Reportable Segment Information (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2023	Apr. 30, 2022
Segment Reporting [Abstract]
Interest expense, net	$ 690	$ 4,588
Other income, net	$ 3,311	$ 4,444

X

- Definition

Non operating interest income (expense) net.

+ References

No definition available.

+ Details

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Namespace Prefix:	aeo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.9)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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