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v3.19.1

REVENUES (Details) | 12 Months Ended
--- | ---
Feb. 02, 2019 | Feb. 03, 2018 | Jan. 28, 2017
Product Information [Line Items] |  |  |
Percentage of net sales | 100.00% | 100.00% | 100.00%
Denims [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 41.00% | 41.50% | 42.20%
Tops (including sweaters) [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 32.80% | 32.30% | 30.80%
Accessories [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 8.80% | 9.10% | 9.20%
Footwear [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 6.70% | 6.10% | 5.90%
Sportswear / Fashions [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 6.00% | 6.20% | 6.50%
Outerwear [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 2.10% | 2.00% | 2.00%
Casual bottoms [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 1.20% | 1.30% | 1.90%
Other [Member] |  |  |
Product Information [Line Items] |  |  |
Percentage of net sales | 1.40% | 1.50% | 1.50%

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- Definition Aggregate percentage of revenue during the period from sale of goods and services in the normal course of business, after deducting returns, allowances and discounts. + References No definition available. + Details
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Namespace Prefix: | bke_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ProductInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=bke_TopsAndSweatersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=bke_AccessoriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=bke_FootwearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=bke_SportswearAndFashionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=bke_OuterwearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=bke_CasualBottomsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=bke_OtherProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |