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Summary of Significant Accounting Policies (Details) - store | Nov. 02, 2024 | Oct. 28, 2023
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Accounting Policies [Abstract] |  |
Number of company operated stores | 1,749 | 1,481

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- Definition Number Of Company Operated Stores + References No definition available. + Details
Name: | five_NumberOfCompanyOperatedStores
Namespace Prefix: | five_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration