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Finance Costs (Tables)
 12 Months Ended
Dec. 31, 2022
Text Block [abstract]  
Summary of finance cost
A.2
  
Finance costs
 
    
2022
US$m
     
2021
US$m
     
2020
US$m
  
 
  
Interest on interest-bearing liabilities
   
 
212
 
   
 
201
 
   
 
237
 
Interest on lease liabilities
   
 
103
 
   
 
97
 
   
 
86
 
Accretion charge
   
 
110
 
   
 
29
 
   
 
32
 
Other finance costs
   
 
36
 
   
 
26
 
   
 
29
 
Less: Finance costs capitalised against qualifying assets
   
 
(294)
 
   
 
(123)
 
   
 
(57)
 
 
  
    
 
167
 
   
 
230
 
   
 
327