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Accounts Receivable, Non-trade (Details) - Schedule of Accounts Receivable, Non-Trade - USD ($)	Dec. 31, 2025	Jun. 30, 2025
Schedule of Accounts Receivable, Non-Trade [Abstract]
Interest receivable	$ 2,565	$ 237
Refundable credit on contract terminations	618,971	0
Research and development incentives receivable	488,372	0
GST receivables	0	11,711
Total accounts receivable, non-trade	$ 1,109,908	$ 11,948

X

- Definition

Value of gst receivables.

+ References

No definition available.

+ Details

Name:	neup_GSTReceivables
Namespace Prefix:	neup_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Refundable Credit on Contract Terminations.

+ References

No definition available.

+ Details

Name:	neup_RefundableCreditOnContractTerminations
Namespace Prefix:	neup_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Research and development incentives receivable.

+ References

No definition available.

+ Details

Name:	neup_ResearchAndDevelopmentIncentivesReceivable
Namespace Prefix:	neup_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountsReceivableNetAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

+ Details

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

X

- Definition

Carrying amount as of the balance sheet date of current interest earned but not received. Also called accrued interest or accrued interest receivable. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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