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Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Feb. 03, 2019
USD ($)
Jan. 30, 2021
USD ($)
Segment
Feb. 01, 2020
USD ($)
Feb. 02, 2019
USD ($)
Significant Accounting Policies [Line Items]        
Number of reportable segments | Segment   2    
Operating lease right-of-use assets   $ 1,155,965,000 $ 1,418,916,000  
Operating lease, liability   1,477,366,000    
Net increase (decrease) to opening retained earnings due to cumulative impact of adoption   $ 1,868,613,000 2,108,292,000  
Weighted average remaining useful life, assets   7 years 2 months 12 days    
Goodwill impairment charge   $ 0 1,700,000  
Definite-lived impairment charges   0 0 $ 0
Revenue related to gift card breakage   $ 8,800,000 9,500,000 8,900,000
Reward expiration period   60 days    
Credit Card Reward Program Description   This Program features both shared and unique benefits for loyalty members and credit card holders. Under the Program, members accumulate points based on purchase activity and earn rewards by reaching certain point thresholds. Members earn rewards in the form of discount savings certificates. Prior to this launch in June 2020, under our previous program, AEO Connected™, we also offered additional rewards for key items such as jeans and bras. Rewards earned are valid through the stated expiration date, which is 60 days from the issuance date of the reward. Rewards not redeemed during the 60-day redemption period are forfeited.    
Prepaid advertising expense   $ 5,700,000 14,500,000  
Advertising expense   $ 150,000,000.0 $ 151,500,000 $ 143,200,000
Minimum        
Significant Accounting Policies [Line Items]        
Definite-lived intangibles, useful life   15 years    
Maximum        
Significant Accounting Policies [Line Items]        
Definite-lived intangibles, useful life   25 years    
Accounting Standards Update 2016-02        
Significant Accounting Policies [Line Items]        
Operating lease right-of-use assets $ 1,600,000,000      
Operating lease, liability 1,600,000,000      
Tax effects to retained earnings 15,000,000.0      
Deferred rent 82,900,000      
Deferred lease credits 55,000,000.0      
Prepaid rent to the operating lease right-of-use asset 40,400,000      
Reduction in net operating lease right-of-use asset 1,400,000,000      
Accounting Standards Update 2016-02 | Cumulative Effect, Period of Adoption, Adjustment        
Significant Accounting Policies [Line Items]        
Net increase (decrease) to opening retained earnings due to cumulative impact of adoption $ (44,400,000)      
Accounting Standards Update 2016-13        
Significant Accounting Policies [Line Items]        
Change in accounting principle, accounting standards update, adopted   true    
Change in accounting principle, accounting standards update, adoption date   Feb. 02, 2020    
Change in accounting principle, accounting standards update, immaterial effect   true