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v3.21.1

Intangible Assets - Disclosure of Detailed Information About Impairment of Indefinite-lived Brand Intangibles (Details) - NZD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2021 | Jan. 31, 2020
Statement Line Items [Line Items] |  |
Impairment of indefinite-lived brand intangibles | $ 3,333 | $ 3,694
Pleasure State [Member] |  |
Statement Line Items [Line Items] |  |
Impairment of indefinite-lived brand intangibles | 2,002 | 125
Davenport and Lovable [Member] |  |
Statement Line Items [Line Items] |  |
Impairment of indefinite-lived brand intangibles | 1,331 | 1,439
Naked [Member] |  |
Statement Line Items [Line Items] |  |
Impairment of indefinite-lived brand intangibles |  | $ 2,130

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- Definition Statement Line Items + References No definition available. + Details
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Namespace Prefix: | NAKD_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Impairment of indefinite-lived brand intangibles. + References No definition available. + Details
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Namespace Prefix: | NAKD_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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