The amount of future minimum lease payments payable under non-cancellable operating leases. Minimum lease payments are payments over the lease term that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee.

No definition available.

Name:	NAKD_MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease1
Namespace Prefix:	NAKD_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Other Financial Commitments - Disclosure of Detailed Information About Operating Leases Explanatory (Details) - NZD ($) $ in Thousands	Jan. 31, 2020	Jan. 31, 2019
Statement Line Items [Line Items]
Minimum lease payments under non-cancellable operating lease		$ 28,057
Within One Year [member]
Statement Line Items [Line Items]
Minimum lease payments under non-cancellable operating lease		8,533
Between One Year and Five Years [Member]
Statement Line Items [Line Items]
Minimum lease payments under non-cancellable operating lease		18,039
After 5 Years [member]
Statement Line Items [Line Items]
Minimum lease payments under non-cancellable operating lease		$ 1,485