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Segment Information: Schedule of sales by country (Details) - USD ($)	6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Segment Reporting [Abstract]
United States	$ 25,657,040	$ 20,394,544
Canada	426,425	250,863
Europe	24,913	11,058
Mexico/Latin America/Caribbean	632,334	108,659
Asia/Pacific	$ 237,763	$ 11,515

X

- Definition

Represents the monetary amount of Asia/Pacific sales, during the indicated time period.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the monetary amount of Canada sales, during the indicated time period.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the monetary amount of Europe sales, during the indicated time period.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the monetary amount of Mexico/Latin America sales, during the indicated time period.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the monetary amount of United States sales, during the indicated time period.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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