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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details Narrative) - CAD ($)	Sep. 30, 2025	Dec. 31, 2024
Cymbria [Member] | NSR Option Liability [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Fair value of call option

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- Definition

Fair value of call option.

+ References

No definition available.

+ Details

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Namespace Prefix:	NEXM_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479402/808-10-50-1

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Period Type:	duration

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

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