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Lease Liabilities - Disclosure of Detailed Information About Lease Liabilities (Details) (Parenthetical) - NZD ($) $ in Thousands | Jan. 31, 2020 | Feb. 02, 2019
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Lease liabilities [abstract] |  |
Adjustment to opening retained earnings | $ 639 | $ 639

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- Definition Adjustment to opening retained earnings. + References No definition available. + Details
Name: | NAKD_AdjustmentToOpeningRetainedEarnings
Namespace Prefix: | NAKD_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_LeaseLiabilitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration