v3.25.3
Borrowings - Disclosure of Facilities' Terms Schedule (Details)
R in Millions, $ in Millions
 1 Months Ended
May 30, 2025
USD ($)
May 30, 2022
USD ($)
Jun. 30, 2025
ZAR (R)
May 30, 2022
ZAR (R)
R2.5 Billion Facility - Sustainability Linked        
Disclosure of detailed information about borrowings [line items]        
Maximum borrowing capacity | R       R 2,500
Term of facility   Five years    
R2.5 Billion Facility - Sustainability Linked | JIBAR        
Disclosure of detailed information about borrowings [line items]        
Interest charge (as a percent)   2.40%   2.40%
US$400 million facility - Sustainability Linked        
Disclosure of detailed information about borrowings [line items]        
Maximum borrowing capacity   $ 400    
Term of facility   Five years    
R1.5 billion facility - Green Term Loan        
Disclosure of detailed information about borrowings [line items]        
Maximum borrowing capacity | R       R 1,500
Term of facility   Six years, six months    
R1.5 billion facility - Green Term Loan | JIBAR        
Disclosure of detailed information about borrowings [line items]        
Interest charge (as a percent)   2.65%   2.65%
US1.25 billion facility - Bridge Facility        
Disclosure of detailed information about borrowings [line items]        
Maximum borrowing capacity $ 1,250      
Term of facility One year      
Loan origination fees related to the bridge facility capitalized | R     R 197  
Term loan | US$400 million facility - Sustainability Linked        
Disclosure of detailed information about borrowings [line items]        
Maximum borrowing capacity   $ 100    
Term loan | US$400 million facility - Sustainability Linked | Secured Overnight Financing Rate (SOFR)        
Disclosure of detailed information about borrowings [line items]        
Interest charge (as a percent)   2.85%   2.85%
Term loan | US1.25 billion facility - Bridge Facility | Secured Overnight Financing Rate (SOFR) | Due between 0 to six months        
Disclosure of detailed information about borrowings [line items]        
Interest charge (as a percent) 2.00%      
Term loan | US1.25 billion facility - Bridge Facility | Secured Overnight Financing Rate (SOFR) | Next six months        
Disclosure of detailed information about borrowings [line items]        
Interest charge (as a percent) 2.80%      
Term loan | US1.25 billion facility - Bridge Facility | Secured Overnight Financing Rate (SOFR) | Last six months        
Disclosure of detailed information about borrowings [line items]        
Interest charge (as a percent) 4.00%      
Revolving credit facility | US$400 million facility - Sustainability Linked        
Disclosure of detailed information about borrowings [line items]        
Maximum borrowing capacity   $ 300    
Revolving credit facility | US$400 million facility - Sustainability Linked | Secured Overnight Financing Rate (SOFR)        
Disclosure of detailed information about borrowings [line items]        
Interest charge (as a percent)   2.70%   2.70%