Document and Entity Information (USD $)	12 Months Ended
Jul. 31, 2013	Nov. 13, 2013	Jan. 31, 2013
Document and Entity Information:
Entity Registrant Name	NORTHERN MINERALS & EXPLORATION LTD.
Document Type	10-K
Document Period End Date	Jul. 31, 2013
Amendment Flag	true
Amendment Description	10-K/A Annual Report Ending July 31, 2013 (Refiled with Restated Statement of Cash Flows)
Entity Central Index Key	0001415744
Current Fiscal Year End Date	--07-31
Entity Common Stock, Shares Outstanding		5,044,484
Entity Public Float			$ 3,665,671.20
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY

Description of changes contained within amended document.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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