XML 57 R44.htm IDEA: XBRL DOCUMENT v3.25.3

SCHEDULE OF EXPLORATION AND EVALUATION ASSETS (Details) - CAD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
ExtractiveIndustriesLineItems [Line Items]
Balance			$ 8,846,821	$ 8,594,798	$ 8,594,798
Foreign currency translation			126,442		252,023
Impairment loss - Phikwe South and Southeast Extension	$ (501,497)		(501,497)
Balance	8,471,766		8,471,766		8,846,821
BOTSWANA | Selebi [Member] | Mining Properties and Mineral Rights [Member]
ExtractiveIndustriesLineItems [Line Items]
Balance			8,528,478	8,285,523	8,285,523
Foreign currency translation			121,752		242,955
Impairment loss - Phikwe South and Southeast Extension			(501,497)
Balance	8,148,733		8,148,733		8,528,478
BOTSWANA | Selkrik [Member] | Mining Properties and Mineral Rights [Member]
ExtractiveIndustriesLineItems [Line Items]
Balance			318,343	$ 309,275	309,275
Foreign currency translation			4,690		9,068
Impairment loss - Phikwe South and Southeast Extension
Balance	$ 323,033		$ 323,033		$ 318,343

X

- References

No definition available.

+ Details

Name:	NEXM_ExtractiveIndustriesLineItems
Namespace Prefix:	NEXM_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Mining properties increase decreases from foreign currency translation adjustments.

+ References

No definition available.

+ Details

Name:	NEXM_MiningPropertiesIncreaseDecreasesFromForeignCurrencyTranslationAdjustments
Namespace Prefix:	NEXM_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 942
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480095/942-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 942
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480035/942-10-S99-6

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482130/360-10-45-4

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Mineral properties, net of adjustments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 360
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

+ Details

Name:	us-gaap_MineralPropertiesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	srt_StatementGeographicalAxis=country_BW
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=NEXM_SelebiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MiningPropertiesAndMineralRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=NEXM_SelkrikMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: