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

Dividends - Disclosure of Detailed Information About Dividends Explanatory (Details) (Parenthetical)

v3.19.2
Dividends - Disclosure of Detailed Information About Dividends Explanatory (Details) (Parenthetical)
7 Months Ended 12 Months Ended
Jan. 31, 2017
Jan. 31, 2019
Jan. 31, 2018
Jun. 30, 2016
DisclosureOfDividendsLineItems [Line Items]        
Applicable tax rate 28.00% 28.00% 28.00% 28.00%
Australian Franking Credits [Member]        
DisclosureOfDividendsLineItems [Line Items]        
Tax rate effect of foreign tax rates 30.00% 30.00% 30.00%  
New Zealand imputation credits [Member]        
DisclosureOfDividendsLineItems [Line Items]        
Applicable tax rate 28.00% 28.00% 28.00%