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Equity (Details Narrative) - BRL (R$)
 12 Months Ended
Jun. 18, 2019
Mar. 12, 2019
Mar. 12, 2019
Mar. 08, 2019
Dec. 04, 2018
Aug. 26, 2018
Apr. 26, 2018
Apr. 26, 2018
Dec. 31, 2021
Mar. 07, 2022
Jan. 27, 2022
Oct. 27, 2021
Apr. 26, 2021
Dec. 31, 2020
Dec. 23, 2020
Dec. 31, 2019
Jun. 13, 2019
Apr. 08, 2019
Dec. 31, 2018
IfrsStatementLineItems [Line Items]                                      
Share capital                 R$ 17,000         R$ 17,000   R$ 315,000     R$ 1,443,541
Share capital                           R$ 17          
Total number of shares                 93,722,831                    
Total number of shares                 442,669         93,146,731          
Proceeds from issue of ordinary shares                 R$ 55,197                    
Capital increase with earnings reserves                                     R$ 80,541
Renounce of dividends for prior years       R$ 4,107                              
Par value per share                 R$ 99.76       R$ 0.00005            
Repurchase of ordinary shares                 2,142,051                    
Purchase prices paid shares                 R$ 74,500                    
Additional paid-in capital                 21,861                    
[custom:AdditionalPaidinCapital2-0]                 783                    
Cancellation of dividend       R$ 4,107                              
Dividend payables                                 R$ 38,000    
Dividend paid                 65,521                    
Dividends paid classified                 46,873                    
Dividends paid to non-controlling interests                 18,648                    
Share capital                 18.00                    
Proceeds from issue of shares                 R$ 213,722                    
Uniao Educacional Do Planalto Central S A U E P C [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Proceeds from issue of ordinary shares R$ 36,358                                    
Class A Ordinary Shares [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Total number of shares                 47,920,068         45,112,416         26,523
Repurchase of ordinary shares                     1,874,457 1,383,108     1,015,844        
Class B Ordinary Shares [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Total number of shares                           5,123          
Total number of shares                 45,802,763         48,034,315          
Class B Ordinary Shares [Member] | Nicolau Carvalho Esteves [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Repurchase of ordinary shares                   6,000,000                  
Ordinary shares [member]                                      
IfrsStatementLineItems [Line Items]                                      
Total number of shares         137,298   124,994 124,994                     1,411,895
Proceeds from issue of ordinary shares         R$ 99,999   R$ 55,000                        
Ordinary shares [member] | B R Health [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Proceeds from issue of ordinary shares   R$ 150,000                                  
Number of shares in entity held by entity or by its subsidiaries or associates shares   156,337 156,337                             37,200  
Par value per share       R$ 0.01                              
Ordinary shares [member] | Nicolau Carvalho Esteves [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Par value per share                   R$ 26.90                  
Repurchase of ordinary shares   160,000 160,000                                
Acquisition price   R$ 206.25 R$ 206.25                                
Acquisitions held by shareholders     R$ 33,001                                
Class A Preference Shares [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Total number of shares             26,523 26,523                      
Description of ratio of convertible shares                 (i) do not grant voting rights at the shareholders meetings; (ii) the right to receive an amount, as dividend, per share equal to 17.7 times the amount received per common share; and (iii) were convertible into common shares at the ratio of 1 preferred share for 17.7 common shares in the situations described in the Shareholders Agreemen                    
Proceeds from issue of preference shares               R$ 11,670                      
Class B Preference Shares [Member]                                      
IfrsStatementLineItems [Line Items]                                      
Total number of shares           5,123                          
Description of ratio of convertible shares                 Class B preferred shares had no voting rights and had priority in capital reimbursement in case of liquidation of the Company, with no premium. Class B preferred shares were convertible into common shares at the ratio of 1 Class B preferred share f1or 1 common share, in certain situations.                    
Proceeds from issue of preference shares           R$ 1,304