TAXATION (Narrative) (Details)	12 Months Ended
Jan. 31, 2019	Jan. 31, 2018
Statements [Line Items]
Applicable tax rate	27.00%	26.00%
2018
Statements [Line Items]
Applicable tax rate	34.00%
2019
Statements [Line Items]
Applicable tax rate	21.00%

The applicable income tax rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2018-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_ii&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_ApplicableTaxRate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration