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Derivative on Convertible Notes - Disclosure of Detailed Information About Derivative on Convertible Notes (Details) - NZD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Disclosure Of Derivative On Convertible Notes [Abstract]
Derivative on Convertible Notes		$ 1,110	$ 4,112

X

- Definition

The amount of derivative on convertible notes.

+ References

No definition available.

+ Details

Name:	NAKD_DerivativeOnConvertibleNotes
Namespace Prefix:	NAKD_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	NAKD_DisclosureOfDerivativeOnConvertibleNotesAbstract
Namespace Prefix:	NAKD_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration