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Corporate information (Details Narrative)
 12 Months Ended
Mar. 10, 2020
BRL (R$)
shares
Mar. 10, 2020
USD ($)
shares
Feb. 06, 2020
BRL (R$)
R$ / shares
shares
Jul. 23, 2019
BRL (R$)
R$ / shares
shares
Jul. 08, 2019
Jun. 18, 2019
Mar. 29, 2019
Dec. 31, 2021
BRL (R$)
shares
Dec. 31, 2020
BRL (R$)
shares
Dec. 31, 2019
BRL (R$)
Oct. 01, 2021
Aug. 04, 2021
Jun. 01, 2021
May 13, 2021
Apr. 16, 2021
Apr. 08, 2021
Jul. 18, 2019
shares
Mar. 25, 2019
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired                       100.00%            
Description of exchanging and rights of shares         exchanging one common share into 28 Class A or Class B common shares                          
Number of shares issed (shares) | shares               442,669 93,146,731                  
Proceeds from issue of shares               R$ 55,197                    
Share issuance costs                 R$ (19,704,000) R$ (79,670,000)                
Transferred amount to bank accounts               251,800 961,438                  
Amount of legal proceedings               33,081 R$ 6,545                  
Class A Common Shares [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Number of shares issed (shares) | shares       13,888,887                            
Proceeds from issue of shares | $   $ 68,060                                
Class A Common Shares [Member] | Initial Public Offering [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Number of shares issed (shares) | shares       15,805,841                         13,744,210  
Proceeds from issue of shares       R$ 992,778                            
Net proceeds from issue of shares       913,108                            
Fee and commission expense       59,566                            
Other offering expenses       20,104                            
Share issuance costs       79,670,000                            
Number of additional common shares issued | shares     3,019,928                              
Class A Common Shares [Member] | Initial Public Offering [Member] | United States of America, Dollars                                    
IfrsStatementLineItems [Line Items]                                    
Proceeds from issue of shares       263,888                            
Net proceeds from issue of shares       242,711                            
Fee and commission expense       15,833                            
Other offering expenses       R$ 5,344                            
Class A Common Shares [Member] | Initial Public Offering [Member] | Underwriters [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Number of shares issed (shares) | shares       1,916,954                            
per share | R$ / shares       R$ 19.00                            
Other offering expenses R$ 1,066                                  
Additional shares gross proceeds 30,884                                  
Net proceeds of additional shares R$ 29,819                                  
Class A Common Shares [Member] | Initial Public Offering [Member] | Underwriters [Member] | United States of America, Dollars                                    
IfrsStatementLineItems [Line Items]                                    
Number of additional common shares issued | shares 240,552 240,552                                
Additional shares gross proceeds R$ 6,615                                  
Net proceeds of additional shares R$ 6,387                                  
Class A Common Shares [Member] | Initial Public Offering [Member] | Shareholders [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Other offering expenses     R$ 18,638                              
Number of additional common shares issued | shares     9,406,812                              
Additional shares gross proceeds     R$ 358,286                              
Net proceeds of additional shares     339,648                              
Class A Common Shares [Member] | Initial Public Offering [Member] | Shareholders [Member] | United States of America, Dollars                                    
IfrsStatementLineItems [Line Items]                                    
Other offering expenses     R$ 4,202                              
Additional offering price | R$ / shares     R$ 27.50                              
Additional shares gross proceeds     R$ 83,048                              
Net proceeds of additional shares     R$ 78,846                              
Class A Common Shares [Member] | Over Allotments [Member] | Underwriters [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Number of shares issed (shares) | shares       2,061,631                            
Medcel Editora And C B B Web [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired                                   100.00%
Proportion of ownership interest in subsidiary             100.00%                      
Uniao Educacional Do Planalto Central S A [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired           30.00%                        
Proportion of ownership interest in subsidiary           15.00% 15.00%                      
Medical Harbour Aparelhos Medicos Hospitalarese Servicosem Tecnologia Ltda [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired                               100.00%    
Cliquefarma Drogarias Online Ltda [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired                             100.00%      
Shosp Tecnologiada Informacao Ltda [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired                           100.00%        
Sociedade Padraode Educacao Superior Ltd [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired                         100.00%          
R X P R O Solucoesde Tecnologia Ltda [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired                     100.00%              
Faculdade De Ciencias Medicas Da Paraiba [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Amount of legal proceedings               R$ 24,800                    
Guardaya Empreendimentos And Participacoes S A [Member]                                    
IfrsStatementLineItems [Line Items]                                    
Percentage of voting equity interests acquired             100.00%