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Net Finance Costs (Tables)
 12 Months Ended
Dec. 31, 2021
Text Block [Abstract]  
Summary of Net Finance Costs
    
2021
     
2020
     
2019
  
(in $ millions)
   
$
     
$
     
$
  
Interest income under the effective interest method on:
                           
- Time deposits
      11        28        43  
- Cash and cash equivalents
      15        14        33  
Net change in fair value of financial assets and liabilities
      37        —          —    
Net foreign exchange gain
      2        11        9  
Finance income
   
 
65
 
   
 
53
 
   
 
85
 
Financial liabilities measured at amortized cost – interest expense
      (1,701 )       (1,433 )       (1,053 ) 
Impairment loss and change in fair value on investment in associates
      —          (15 )       —    
Net change in fair value of financial assets and liabilities
      —          (42 )       (3 ) 
Finance costs
   
 
(1,701
) 
   
 
(1,490
) 
   
 
(1,056
) 
Share listing and associated expenses (Note 28)
   
 
(353
) 
   
 
—  
 
   
 
—  
 
Net finance costs recognized in profit or loss
   
 
(1,989
) 
   
 
(1,437
) 
   
 
(971
)