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Share Capital - Disclosure of Detailed Information About Share Capital (Details) - NZD ($) $ in Thousands | Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2017
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Disclosure of classes of share capital [abstract] |  |  |
Shares Outstanding Value | $ 134,183 | $ 68,727 | $ 27,948

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- Definition Represents the value of shares outstanding. + References No definition available. + Details
Name: | NAKD_SharesOutstandingValue
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_DisclosureOfClassesOfShareCapitalAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration