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Share-Based Payment - Additional Information (Detail)
$ / shares in Units, R$ in Thousands
 1 Months Ended 12 Months Ended
Oct. 29, 2018
BRL (R$)
Jul. 31, 2018
BRL (R$)
Dec. 31, 2019
shares
Aug. 31, 2019
USD ($)
shares
$ / shares
Apr. 30, 2019
shares
Sep. 30, 2018
USD ($)
shares
$ / shares
Jul. 31, 2018
BRL (R$)
shares
Dec. 31, 2019
BRL (R$)
shares
Branch
Dec. 31, 2018
BRL (R$)
shares
Dec. 31, 2017
BRL (R$)
shares
Jan. 31, 2018
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Repurchase of shares | R$ R$ 79,210 R$ 63,230         R$ 63,230 R$ 90   R$ 280,825  
Repurchased and cancellation of shares | R$                 R$ 142,440    
Number of days option to repurchase shares               90 days      
Largest payout of award's before 10 years lock-up periods expires, percent               85.00%      
Number of tranches, vesting | Branch               3      
Percentage of voting rights for settlement event               50.00%      
Share options granted, shares               14,597 5,701,374 8,073,702  
Share-based payments | R$               R$ 64,509 R$ 60,843 R$ 138,937  
Treasury shares [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Repurchase of shares | R$               R$ 90      
Phantom shares [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Shares originally granted, date               December 1, 2017      
Restricted share units and stock options [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Shares issued     5,261,256         5,261,256      
Stock Options [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Share options granted, shares           135,198          
Share based compensation by share based payment arrangement,number of instruments cancelled               106,722      
Weighted average exercise price of share options granted in share-based payment arrangement | $ / shares           $ 24.00          
Stock Options [member] | Excercise Period One [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Options exercisable period           5 years          
Percentage of shares excercisable           77.00%          
Stock Options [member] | Excercise Period Two [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Options exercisable period           7 years          
Percentage of shares excercisable           5.00%          
Stock Options [member] | Excercise Period Three [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Options exercisable period           10 years          
Percentage of shares excercisable           18.00%          
Restricted share units (RSUs) [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Share based compensation by share based payment arrangement,number of instruments granted       9,437              
Share based compensation by share based payment arrangement,number of instruments cancelled       527,350              
Stock Options One [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Share options granted, shares       5,160              
Weighted average exercise price of share options granted in share-based payment arrangement | $ / shares       $ 30.00              
Stock Options One [Member] | Excercise Period One [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Options exercisable period       3 years              
Percentage of shares excercisable       50.00%              
Stock Options One [Member] | Excercise Period Two [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Options exercisable period       5 years              
Percentage of shares excercisable       50.00%              
IPO [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of shares vested               6.00%      
Share based compensation award tranche one [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of percentage incentive shares recognized on grant date fair value               75.00%      
Shares exercised vesting period               3 years      
Share based compensation award tranche two [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of percentage incentive shares recognized on grant date fair value               5.00%      
Shares exercised vesting period               3 years      
Additional incentive shares discount rate               5.00%      
Share based compensation award tranche three [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of percentage incentive shares recognized on grant date fair value               5.00%      
Shares exercised vesting period               7 years      
Additional incentive shares discount rate               5.00%      
Shares lock-up period               7 years      
Under 4 Years [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of shares vested               9.00%      
Shares vesting period               0 0    
Under 5 Years [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of shares vested       15.00%       18.00%      
Shares vesting period               0 0    
Under 5 Years [member] | Restricted share units (RSUs) [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Share based compensation by share based payment arrangement vesting period       5 years              
Under 7 Years [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of shares vested               21.00%      
Shares vesting period               0 0    
Under 7 Years [member] | Restricted share units (RSUs) [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of shares vested       20.00%              
Share based compensation by share based payment arrangement vesting period       7 years              
Under 10 Years [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of shares vested               46.00%      
Shares vesting period               0 0    
Under 10 Years [member] | Restricted share units (RSUs) [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of shares vested       65.00%              
Share based compensation grant date share price | $       $ 35.54              
Share based compensation by share based payment arrangement vesting period       10 years              
Top of range [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Repurchase right exercise period               2 years      
Top of range [member] | Share based compensation award tranche two [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Shares lock-up period               7 years      
Bottom of range [member] | Share based compensation award tranche two [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Shares lock-up period               3 years      
Class C Shares [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Shares lock-up period               10 years      
Class C common stock [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of shares repurchased and cancelled             1,814,022        
Class A common stock [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Shares issued                   21,909,132 110,250
Repurchase of common stock               3,838      
Class A common stock [member] | Restricted share units and stock options [member] | Treasury shares [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Repurchase of common stock               11,601      
Class A common stock [member] | Restricted share units (RSUs) [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Share based compensation grant date share price | $           $ 24.00          
Share based compensation by share based payment arrangement,number of instruments cancelled     1,890                
Class A common stock [member] | Restricted share units (RSUs) [member] | Follow On Offer [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Shares vested during the period         151,182            
Class A common stock [member] | Restricted share units (RSUs) [member] | Treasury shares [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Common Stock Shares Redeem During The Period     8,569