v3.26.1
Post-retirement benefit obligations - Investments (Details) - Pension - ZAR (R)
R in Millions
12 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
South Africa        
Pension benefits        
Percentage of members electing to transfer to the defined contribution section of the pension fund 99.00%      
Ordinary shares included in the plan assets   1,161,107   2,080,908
Value of ordinary shares included in the plan assets   R 188   R 160
Value of property occupied included in the plan assets   R 1,583   R 1,589
Pension fund assets        
Equities 53.00%   55.00%  
Resources 8.00%   6.00%  
Industrials 4.00%   4.00%  
Consumer discretionary 9.00%   11.00%  
Consumer staples 5.00%   6.00%  
Healthcare 3.00%   4.00%  
Information technologies 7.00%   7.00%  
Telecommunications 3.00%   3.00%  
Utilities 1.00%   1.00%  
Financials (ex real estate) 13.00%   13.00%  
Fixed interest 21.00%   17.00%  
Direct property 11.00%   11.00%  
Listed property 3.00%   3.00%  
Cash and cash equivalents 3.00%   4.00%  
Third party managed assets 6.00%   9.00%  
Other 3.00%   1.00%  
Total 100.00%   100.00%  
United States of America        
Pension fund assets        
Equities 33.00%   33.00%  
Resources 3.00%   3.00%  
Industrials 4.00%   4.00%  
Consumer discretionary 3.00%   4.00%  
Consumer staples 2.00%   3.00%  
Healthcare 3.00%   3.00%  
Information technologies 10.00%   8.00%  
Telecommunications 3.00%   3.00%  
Financials (ex real estate) 5.00%   5.00%  
Fixed interest 41.00%   42.00%  
Direct property 5.00%   7.00%  
Other 21.00%   18.00%  
Total 100.00%   100.00%