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Cash and cash equivalents and investment securities
 12 Months Ended
Dec. 31, 2023
Text block [abstract]  
Cash and cash equivalents and investment securities
20. Cash and cash equivalents and investment securities
 
 
 
 
 
 
 
 
 
 
     
Million US dollar
  
31 December 2023
 
  
   31 December 2022
 
 
  
 
 
 
  
 
 
 
Short-term bank deposits
  
 
4 201
  
  
 
4 685
  
Cash and bank accounts
  
 
6 131
  
  
 
5 288
  
Cash and cash equivalents
  
 
10 332
 
  
 
9 973
 
 
  
 
 
 
  
 
 
 
Bank overdrafts
  
 
(17)
 
  
 
(83
) 
Cash and cash equivalents in the statement of cash flows
  
 
10 314
 
  
 
9 890
 
The cash outstanding as at 31 December 2023 includes restricted cash for an amount of 109m US dollar (31 December 2022: 73m US dollar). This restricted cash mainly relates to amounts deposited on a blocked account in respect to the state aid investigation into the Belgian excess profit ruling system (76m US dollar).
Investment securities
 
 
 
 
 
 
 
 
 
 
     
Million US dollar
  
31 December 2023
 
  
   31 December 2022
 
 
  
 
 
 
  
 
 
 
Investment in unquoted companies
  
 
151
  
  
 
149
  
Investment in debt securities
  
 
27
  
  
 
26
  
Non-current investments
  
 
178
 
  
 
175
 
 
  
 
 
 
  
 
 
 
Investment in debt securities
  
 
67
  
  
 
97
  
Current investments
  
 
67
 
  
 
97
 
As at 31 December 2023, current debt securities of 67m US dollar mainly represented investments in government bonds (31 December 2022: 97m US dollar). The company’s investments in such short-term debt securities are primarily to facilitate liquidity and for capital preservation.