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)

v3.21.1
Income Tax Expense/(Benefit) - Disclosure of Detailed Information About Reconciliation of Accounting Profit Multiplied by Applicable Tax Rates (Details) (Parenthetical)
12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Income taxes [Abstract]      
Applicable tax rate 28.00% 28.00% 28.00%