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Inventories (Tables)
 12 Months Ended
Dec. 31, 2022
Text Block [abstract]  
Summary of inventories
    
2022
            US$m
     
2021
            US$m
  
 
  
(a) Inventories (current)
                  
Petroleum products
                  
Goods in transit
   
 
95
 
   
 
35
 
Finished stocks
   
 
103
 
   
 
34
 
Warehouse stores and materials
   
 
480
 
   
 
133
 
 
  
    
 
678
 
   
 
202
 
 
  
(b) Inventories
(non-current)
                  
Warehouse stores and materials
   
 
11
 
   
 
19
 
 
  
    
 
11
 
   
 
19