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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Text Block [Abstract]  
Summary of Right-of-use Assets
Right-of-use assets related to leased properties that do not meet the definition of investment property and are presented as property, plant and equipment.
 
     
                    
      
                    
      
                    
  
    
Property
     
Motor

vehicles
     
Total
  
(in $ millions)
   
$
     
$
     
$
  
Balance at January 1, 2020
   
 
48
 
   
 
1
 
   
 
49
 
Depreciation
  
 
(29
) 
   
 
(1
) 
   
 
(30
) 
Additions
  
 
24
 
   
 
*
 
   
 
24
 
Derecognition
  
 
(5
) 
   
 
*
 
   
 
(5
) 
Effects of movement in exchange rates
   
 
1
 
   
 
*
 
   
 
1
 
Balance at December 31, 2020
   
 
39
 
   
 
*
 
   
 
39
 
 
 
*
Amounts less than $1 million
     
                    
      
                    
      
                    
  
    
Property
     
Motor

vehicles
     
Total
  
(in $ millions)
   
$
     
$
     
$
  
Balance at January 1, 2021
   
 
39
 
   
 
*
 
   
 
39
 
Depreciation
  
 
(27
) 
   
 
*
 
   
 
(27
) 
Additions
  
 
100
 
   
 
6
 
   
 
106
 
Derecognition
   
 
*
 
   
 
*
 
   
 
*
 
Effects of movement in exchange rates
   
 
*
 
   
 
*
 
   
 
*
 
Balance at December 31, 2021
   
 
112
 
   
 
6
 
   
 
118
 
 
 
*
Amounts less than $1 million
 
 
b)
Amounts recognized in profit or loss
 

 
  
2021
 
  
2020
 
(in $ millions)
 
 
 
$
 
 
 
 
$
 
Interest on lease liabilities
      5
 
  
 
3
 
Income from
sub-leasing
right-of-use
assets presented in ‘Revenue’
      (1
)
 
  
 
(2
) 
Expenses relating to short-term leases
      1
 
  
 
1
 
Expenses relating to leases of
low-value
assets, excluding short-term leases of
low-value
assets
      *
 
  
 
 *
 
Expenses relating to variable lease payments not included in the measurement of lease liabilities
      1
 
  
 
1
 
 
 
*
Amount less than $1 million
 
 
c)
Amounts recognized in statement of cash flows
 

 
  
2021
 
  
2020
 
(in $ millions)
 
 
 
$
 
 
 
 
$
 
Total cash outflow for leases
  
 
24
 
  
 
30
 
 
  
 
 
 
  
 
 
 
 
Summary of As a Lessor
 
    
2021
     
2020
  
(in $ millions)
   
$
     
$
  
Not later than one year
      42        52  
Later than one year and not later than five years
      3        33