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Document and Entity Information - USD ($)
 12 Months Ended
Jan. 29, 2022
Mar. 28, 2022
Jul. 31, 2021
Document Document And Entity Information [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jan. 29, 2022    
Document Transition Report false    
Entity File Number 001-12951    
Entity Registrant Name BUCKLE, INC    
Entity Incorporation, State or Country Code NE    
Entity Tax Identification Number 47-0366193    
Entity Address, Address Line One 2407 West 24th Street    
Entity Address, City or Town Kearney    
Entity Address, State or Province NE    
Entity Address, Postal Zip Code 68845-4915    
City Area Code 308    
Local Phone Number 236-8491    
Title of 12(b) Security Common Stock, $.01 par value    
Trading Symbol BKE    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 1,235,794,553
Entity Common Stock, Shares Outstanding   50,094,851  
Amendment Flag false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000885245    
Current Fiscal Year End Date --01-29    
Documents Incorporated by Reference Portions of the definitive Proxy Statement for the registrant’s 2022 Annual Meeting of Stockholders are incorporated by reference in Part III.