XML 51 R35.htm IDEA: XBRL DOCUMENT
v3.25.1

Summary of Significant Accounting Policies (Cash and Cash Equivalents) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Feb. 01, 2025 | Feb. 03, 2024
Significant Accounting Policies [Line Items] |  |
Cash Equivalents | $ 310.4 | $ 154.9
Cash and Cash Equivalents [Member] |  |
Significant Accounting Policies [Line Items] |  |
Cash Equivalents | $ 24.7 | $ 22.4
Minimum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Debit and credit card transaction processing period (hours) | 24 hours |
Maximum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Debit and credit card transaction processing period (hours) | 48 hours |

X
- Definition Cash Equivalents + References No definition available. + Details
Name: | five_CashEquivalents
Namespace Prefix: | five_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debit and Credit Card Transaction Processing Period + References No definition available. + Details
Name: | five_DebitAndCreditCardTransactionProcessingPeriod
Namespace Prefix: | five_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | five_SignificantAccountingPoliciesLineItems
Namespace Prefix: | five_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |