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SEGMENT INFORMATION: Sales in excess of ten percent of total sales (Details) - USD ($) | 12 Months Ended
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Aug. 31, 2022 | Aug. 31, 2021
Segment Reporting [Abstract] |  |
Sales to customers in excess of 10% of total sales | $ 33,010,410 | $ 29,806,021

X
- Definition Represents the monetary amount of Sales to customers in excess of 10% of total sales, during the indicated time period. + References No definition available. + Details
Name: | jctcf_SalesToCustomersInExcessOf10OfTotalSales
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