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Goodwill and Intangible Assets, net - Summary of Goodwill and Definite-lived Intangible Assets, Net, (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2024	Feb. 01, 2020	Jan. 28, 2017
Intangible Assets, Net (Including Goodwill) [Abstract]
Accumulated impairment	$ 39.6	$ 1.7	$ 2.5

X

- Definition

Accumulated impairment loss.

+ References

No definition available.

+ Details

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Namespace Prefix:	aeo_
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Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

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