Disclosure of detailed information about foreign exchange rates used (Details)	9 Months Ended
May 31, 2019 Rand_USD CAD_USD	May 31, 2018 Rand_USD CAD_USD	Aug. 31, 2018 Rand_USD CAD_USD
Rand/USD [Member]
Statements [Line Items]
Period-end rate \| Rand_USD	14.6127		14.6883
Period average rate \| Rand_USD	14.2436	12.7354
CAD/USD [Member]
Statements [Line Items]
Period-end rate \| CAD_USD	1.3527		1.3055
Period average rate \| CAD_USD	1.3267	1.2665

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_ClosingForeignExchangeRate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant