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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2021
Text Block [Abstract]  
Summary Of Reconciliation of Carrying Amount of Property, Plant And Equipment
i)
Reconciliation of carrying amount
 
 
  
Computers
 
 
Buildings
and

renovation
 
 
Motor

vehicles held
for leasing
 
 
Office
and other
equipment
 
 
Total
 
(in $ millions)
  
$
 
 
$
 
 
$
 
 
$
 
 
$
 
Cost
                                         
At January 1, 2020
      45       117       564       33       759  
Additions
      6       30       23       4       63  
Write-offs/disposal
      (2 )      (20 )      (104 )      (1 )      (127 ) 
Effects of movements in exchange rates
      1       2       3       *       6  
At December 31, 2020
      50       129       486       36       701  
Additions
      16       136       41       6       199  
Write-offs/disposal
      (3 )      (39 )      (48 )      (2 )      (92 ) 
Effects of movements in exchange rates
      (1 )      2       (9 )      (1 )      (9 ) 
At December 31, 2021
      62       228       470       39       799  

    
Computers
    
Buildings
and

renovation
    
Motor

vehicles held
for leasing
    
Office
and other
equipment
    
Total
  
(in $ millions)
   
$
    
$
    
$
    
$
    
$
  
Accumulated depreciation and impairment losses
                                         
At January 1, 2020
      20       46       148       11       225  
Depreciation for the year
      15       39       65       7       126  
Write-offs/disposal
      (1 )      (15 )      (39 )      *       (55 ) 
Impairment loss
      —         *       15       —         15  
Effects of movements in exchange rates
      1       2       3       *       6  
At December 31, 2020
      35       72       192       18       317  
Depreciation for the year
      16       34       53       6       109  
Write-offs/disposal
      (3 )      (39 )      (24 )      (2 )      (68 ) 
Impairment loss
      —         1       6       —         7  
Effects of movements in exchange rates
      (1 )      (1 )      (4 )      (1 )      (7 ) 
At December 31, 2021
      47       67       223       21       358  
Carrying amounts
                                         
At January 1, 2020
      25       71       416       22       534  
At December 31, 2020
      15       57       294       18       384  
At December 31, 2021
      15       161       247       18       441  
 
  *
Amount less than $1 million
Summary Of Key Assumptions Used In Estimate Of Value In Use
Key assumptions used in the estimate of value in use were as follows:

 
 
  
2021
 
  
2020
 
  
2019
 
 
  
%
 
  
%
 
  
%
 
Discount rate
      6.6 to 12        6.9 to 12        6.7 to 12  
Budgeted rental rate growth/(decline)
      0 to 1.8        0 to 4        (1) to 0  
Utilization rates
      46 to 94        45 to 95        93 to 97