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v3.21.1

Lease Liabilities - Disclosure of Detailed Information About Undiscounted Contractual Maturity of Lease Liabilities (Details) - NZD ($) $ in Thousands | Jan. 31, 2021 | Jan. 31, 2020
--- | --- | ---
Statement Line Items [Line Items] |  |
Future minimum finance charges | $ 24,059 | $ 25,831
Not Later than One Year [Member] |  |
Statement Line Items [Line Items] |  |
Future minimum finance charges | 6,955 | 8,112
2 to 5 years Inclusive [member] |  |
Statement Line Items [Line Items] |  |
Future minimum finance charges | 13,661 | 17,553
After 5 Years [member] |  |
Statement Line Items [Line Items] |  |
Future minimum finance charges | $ 936 | $ 166

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- Definition Future minimum finance charges. + References No definition available. + Details
Name: | NAKD_FutureMinimumFinanceCharges
Namespace Prefix: | NAKD_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_MaturityAxis=NAKD_LaterThanTwoYearToNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |