Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Operating activities:
Net income	$ 80,322us-gaap_NetIncomeLoss	$ 82,983us-gaap_NetIncomeLoss	$ 232,108us-gaap_NetIncomeLoss
Loss from discontinued operations, net of tax	8,465		31,990
Income from continuing operations	88,787	82,983	264,098
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	142,351	134,047	128,397
Share-based compensation	16,070us-gaap_ShareBasedCompensation	(6,541)us-gaap_ShareBasedCompensation	66,349us-gaap_ShareBasedCompensation
Deferred income taxes	(2,279)us-gaap_DeferredIncomeTaxExpenseBenefit	20,100us-gaap_DeferredIncomeTaxExpenseBenefit	(30,647)us-gaap_DeferredIncomeTaxExpenseBenefit
Foreign currency transaction loss (gain)	(495)	1,378	100
Loss on impairment of assets	33,468us-gaap_AssetImpairmentCharges	44,465us-gaap_AssetImpairmentCharges	34,869us-gaap_AssetImpairmentCharges
Changes in assets and liabilities:
Merchandise inventory	8,586	40,148	35,202
Accounts receivable	3,084	(29,511)	(6,664)
Prepaid expenses and other	14,282	(10,844)	404
Other assets	6,612	(36,089)	(8,165)
Accounts payable	(5,280)	28,568	(10,468)
Unredeemed gift cards and gift certificates	1,238	1,269	1,473
Deferred lease credits	(4,528)	583	(11,073)
Accrued compensation and payroll taxes	20,716	(42,465)	23,018
Accrued income and other taxes	24,826	(25,840)	(7,408)
Accrued liabilities	(9,012)	27,605	20,186
Total adjustments	249,639	146,873	235,573
Net cash provided by operating activities from continuing operations	338,426	229,856	499,671
Investing activities:
Capital expenditures for property and equipment	(245,002)	(278,499)	(93,939)
Purchase of long-lived assets in a business combination		(20,751)
Acquisition of intangible assets	(1,264)	(6,835)	(1,125)
Purchase of available-for-sale securities		(52,065)	(111,086)
Sale of available-for-sale securities	10,002	162,785	15,500
Net cash (used for) provided by investing activities from continuing operations	(236,264)	(195,365)	(190,650)
Financing activities:
Payments on capital leases and other	(7,143)	(2,839)	(3,066)
Repurchase of common stock as part of publicly announced programs		(33,051)	(173,554)
Repurchase of common stock from employees	(7,464)	(23,386)	(4,125)
Net proceeds from stock options exercised	7,305	6,197	76,401
Excess tax benefit from share-based payments	742	8,833	13,279
Cash used to net settle equity awards	0aeo_PaymentsToSettleEquityCompensation	0aeo_PaymentsToSettleEquityCompensation	0aeo_PaymentsToSettleEquityCompensation
Cash dividends paid	(97,224)us-gaap_PaymentsOfDividendsCommonStock	(72,280)us-gaap_PaymentsOfDividendsCommonStock	(403,490)us-gaap_PaymentsOfDividendsCommonStock
Net cash used for financing activities from continuing operations	(103,784)	(116,526)	(494,555)
Effect of exchange rates on cash	(7,578)	(8,151)	504
Cash flows of discontinued operations
Net cash provided by (used for) operating activities	963		(24,616)
Net cash used for investing activities			(780)
Net cash used for financing activities	0	0	0
Effect of exchange rates on cash	0	0	0
Net cash provided by (used for) discontinued operations	963		(25,396)
Net decrease in cash and cash equivalents	(8,237)	(90,186)	(210,426)
Cash and cash equivalents - beginning of period	418,933	509,119	719,545
Cash and cash equivalents - end of period	$ 410,697	$ 418,933	$ 509,119

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

+ Details

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

- Definition

The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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

- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

+ Details

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

- Definition

The cash outflow for acquisition of or capital improvements on other tangible or intangible assets not otherwise defined in the taxonomy.

+ References

+ Details

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

- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

+ Details

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

- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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

- Definition

The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration