XML 55 R42.htm IDEA: XBRL DOCUMENT v3.25.2

SCHEDULE OF EXPLORATION AND EVALUATION ASSETS (Details) - CAD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Oil and Gas, Full Cost Method, Amortization Expense [Line Items]
Balance	$ 8,846,821	$ 8,594,798
Foreign currency translation	(52,143)	252,023
Balance	8,794,678	8,846,821
BOTSWANA | Selebi [Member] | Mining Properties and Mineral Rights [Member]
Oil and Gas, Full Cost Method, Amortization Expense [Line Items]
Balance	8,528,478	8,285,523
Foreign currency translation	(50,266)	242,955
Balance	8,478,212	8,528,478
BOTSWANA | Selkrik [Member] | Mining Properties and Mineral Rights [Member]
Oil and Gas, Full Cost Method, Amortization Expense [Line Items]
Balance	318,343	309,275
Foreign currency translation	(1,877)	9,068
Balance	$ 316,466	$ 318,343

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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 360
-Name Accounting Standards Codification
-Section S50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477385/932-360-S50-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479664/932-10-S99-1

+ Details

Name:	us-gaap_AmortizationExpensePerEquivalentUnitOfProductionOrPerDollarOfGrossRevenueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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: