Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Income Tax Expense/(Benefit) - Disclosure of Detailed Information About Reconciliation of Accounting Profit Multiplied by Applicable Tax Rates (Details) (Parenthetical)

v3.19.2
Income Tax Expense/(Benefit) - Disclosure of Detailed Information About Reconciliation of Accounting Profit Multiplied by Applicable Tax Rates (Details) (Parenthetical)
7 Months Ended 12 Months Ended
Jan. 31, 2017
Jan. 31, 2019
Jan. 31, 2018
Jun. 30, 2016
Income taxes [Abstract]        
Applicable tax rate 28.00% 28.00% 28.00% 28.00%