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Goodwill
 6 Months Ended
Jun. 30, 2024
Disclosure of reconciliation of changes in goodwill [abstract]  
Goodwill
B.3 Goodwill
 
    
US$m
  
Half-year ended 30 June 2024
   
Carrying amount at 1 January 2024
   
 
3,995
 
Transfer to assets held for sale
1
   
 
(298
) 
  
 
 
  
Carrying amount at 30 June 2024
   
 
3,697
 
  
 
 
  
At 30 June 2024
   
Cost
   
 
4,174
 
Accumulated impairment
   
 
(477
) 
  
 
 
  
Net carrying amount
   
 
3,697
 
  
 
 
  
Year ended 31 December 2023
   
Carrying amount at 1 January 2023
      4,614  
Adjustment to purchase price allocation
      55  
Impairment
      (477 ) 
Transfer to assets held for sale
      (197 ) 
  
 
 
  
Carrying amount at 31 December 2023
      3,995  
  
 
 
  
At 31 December 2023
   
Cost
      4,472  
Accumulated impairment
      (477 ) 
  
 
 
  
Net carrying amount
      3,995  
  
 
 
  
 
1.
Refer to Note B.4(a) for details of the sell-downs of the Scarborough Joint Venture.