XML 77 R62.htm IDEA: XBRL DOCUMENT v3.19.1

Leases - Additional Information (Detail)	12 Months Ended
	Feb. 02, 2019
Leases [Abstract]
Initial terms of store leases	10 years

X

- Definition

Lease Term

+ References

No definition available.

+ Details

Name:	aeo_LeaseTerm
Namespace Prefix:	aeo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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