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Summary of Significant Accounting Policies (Details) - Schedule of Summarizes the Company’s Digital Asset	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Schedule of summarizes the Company’s Digital Asset [Abstract]
Approximate number of bitcoins held	833	833
Digital assets carrying value	$ 50,733,354	$ 35,137,576
Gain on digital assets during the period/ Year	$ 15,595,778	$ 10,147,576

X

- Definition

Number of bitcoins held by the company.

+ References

No definition available.

+ Details

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Namespace Prefix:	nxtt_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

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- References

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X

- Definition

Fair value of crypto asset classified as current. Excludes crypto asset held for platform user.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476168/350-60-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476168/350-60-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476168/350-60-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476167/350-60-45-1

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Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of unrealized gain from remeasurement of crypto asset, classified as operating. Excludes crypto asset held for platform user.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476168/350-60-50-3

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Period Type:	duration