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Other Financial Commitments - Disclosure of Detailed Information About Contracted Commitments Explanatory (Details) - NZD ($) $ in Thousands | Jan. 31, 2021 | Jan. 31, 2020
--- | --- | ---
Statement Line Items [Line Items] |  |
Contractual capital commitments |  | $ 5,392
Not Later than One Year [Member] |  |
Statement Line Items [Line Items] |  |
Contractual capital commitments |  | 5,392
Between One Year and Five Years [Member] |  |
Statement Line Items [Line Items] |  |
Contractual capital commitments |  |

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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 The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | instant

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

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