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Inventories
 12 Months Ended
Dec. 31, 2022
Text Block [abstract]  
Inventories
D.3
  
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
 
 
  
Recognition and measurement
Inventories include hydrocarbon stocks, consumable supplies and maintenance spares. Inventories are valued at the lower of cost and net realisable value. Cost is determined on a weighted average basis and includes direct costs and an appropriate portion of fixed and variable production overheads where applicable. Inventories determined to be obsolete or damaged are written down to net realisable value, being the estimated selling price less selling costs.