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Inventories (Tables)
 12 Months Ended
Jun. 30, 2020
Text block [abstract]  
Summary of Inventories
 
   
2020
   2019   
Definitions
   
US$M
   US$M    
Raw materials and consumables
  
 
1,797
 
   1,406   Spares, consumables and other supplies yet to be utilised in the production process or in the rendering of services.
Work in progress
  
 
2,814
 
   2,515   Commodities currently in the production process that require further processing by the Group to a saleable form.
Finished goods
  
 
711
 
   687   Commodities
held-for-sale
and not requiring further processing by the Group.
  
 
 
   
 
 
   
Total
 (1)
  
 
5,322
 
   4,608   
  
 
 
   
 
 
   
Comprising:
      
Current
  
 
4,101
 
   3,840   
Non-current
  
 
1,221
 
   768   Inventories classified as
non-current
are not expected to be utilised or sold within 12 months after the reporting date or within the operating cycle of the business.
  
 
 
   
 
 
   
 
(1)
 
Inventory write-downs of US$37 million were recognised during the year (2019: US$16 million; 2018: US$18 million). Inventory write-downs of US$13 million made in previous periods were reversed during the year (2019: US$21 million; 2018: US$2 million).