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SEGMENT INFORMATION: Schedule of sales by country (Details) - USD ($)	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Segment Reporting [Abstract]
United States	$ 12,023,282	$ 12,089,619
Canada	265,425	305,205
Europe	40,525	1,950
Mexico/Latin America/Caribbean	148,512	283,187
Asia/Pacific	$ 99,756	$ 237,763

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- References

No definition available.

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Name:	jctcf_AsiaPacificSales
Namespace Prefix:	jctcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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No definition available.

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Name:	jctcf_CanadaSales
Namespace Prefix:	jctcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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No definition available.

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Name:	jctcf_EuropeSales
Namespace Prefix:	jctcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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No definition available.

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Name:	jctcf_MexicoLatinAmericaSales
Namespace Prefix:	jctcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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No definition available.

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Name:	jctcf_UnitedStatesSales
Namespace Prefix:	jctcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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No definition available.

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