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Retirement Benefits (Tables)
12 Months Ended
Dec. 31, 2020
Text block [abstract]  
Summary of Retirement Benefits
32.
  
RETIREMENT BENEFITS
               
   All employees are members of various defined contribution retirement schemes.               
     
   Contributions to the various retirement schemes are fully expensed during the period in which they are incurred.               
     
   Retirement benefit costs  
 
28.8
 
   27.0    32.8