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Shares in group companies (Tables)
 12 Months Ended
Dec. 31, 2021
Aegon N.V [member]  
Statement [LineItems]  
Summary of Shares in Group Companies
 
  
  
  
  
                2021
 
 
                2020
 
       
       
At January 1
        
 
24,846
 
     25,037  
       
Capital contributions and acquisitions
           65       96  
       
Dividend received
           (1,196 )      (735 ) 
       
Net result for the financial year
           2,120       -  
       
Revaluations
   
 
      209       448  
       
At December 31
   
 
   
 
26,042
 
  
 
24,846