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Prepayments and other assets (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure Of Prepayments And Other Assets [Abstract]  
Summary Of Prepayments And Other Assets
    
2021
     
2020
  
(in $ millions)
   
$
     
$
  
Non-current
            
 
 
 
Deposits
      127        4  
Current
                  
Prepayments
      81        34  
Tax recoverable
      48        25  
Deposits
      48        35  
Others
      23        28  
Less: Loss allowance
      (15 )       (13 ) 
       185        109