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Closure and rehabilitation provisions (Tables)
 12 Months Ended
Jun. 30, 2022
Text block [abstract]  
Summary of Closure and Rehabilitation Provisions
 
 
  
2022
 
 
2021
 
 
  
US$M
 
 
US$M
 
At the beginning of the financial year
   
 
11,910
 
     8,810  
Capitalised amounts for operating sites:
                 
Change in estimate
   
 
1,579
 
     1,974  
Exchange translation
   
 
(694
)
 
     483  
Adjustments charged/(credited) to the income statement:
     
 
 
        
Increases to existing and new provisions
   
 
174
 
     564  
Exchange translation
   
 
(58
)
     76  
Released during the year
   
 
(42
)
     (157 ) 
Other adjustments to the provision:
     
 
 
        
Amortisation of discounting impacting net finance costs
   
 
554
 
     380  
Acquisition of subsidiaries and operations
   
 
–
 
     179  
Divestment and demerger of subsidiaries and operations
   
 
(4,477
)
     (81 ) 
Expenditure on closure and rehabilitations activities
   
 
(316
)
     (321 ) 
Exchange variations impacting foreign currency translation reserve
   
 
(3
)
     3  
Other movements
   
 
62
 
     –  
    
 
 
     
 
 
  
At the end of the financial year
   
 
8,689
 
     11,910  
    
 
 
     
 
 
  
Comprising:
                 
Current
   
 
475
 
     591  
Non-current
   
 
8,214
 
     11,319  
    
 
 
     
 
 
  
Operating sites
   
 
6,198
 
     9,279  
Closed sites
   
 
2,491
 
     2,631