SEGMENT INFORMATION: Sales in excess of ten percent of total sales (Details) - USD ($)	12 Months Ended
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

Represents the monetary amount of Sales to customers in excess of 10% of total sales, during the indicated time period.

No definition available.

Name:	jctcf_SalesToCustomersInExcessOf10OfTotalSales
Namespace Prefix:	jctcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration