XML 390 R73.htm IDEA: XBRL DOCUMENT v3.22.4
Capital and other commitments (Tables)
 12 Months Ended
Dec. 31, 2022
Text Block [Abstract]  
Summary of Capital and Other Commitments  
            
        2022
$m
            
        2021
$m
  
Contracts placed for expenditure not provided in the Group Financial Statements
            
 
 
 
            
 
 
 
Property, plant and equipment
            
 
5
 
            
 
13
 
Intangible assets
            
 
1
 
            
 
4
 
 
            
 
6
 
            
 
17