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Share-Based Payment - Summary of Right to Acquire Shares for Price Originally Paid by Participant, Less an Applicable Discount (Detail)
 12 Months Ended
Dec. 31, 2019
7-10 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Discount 25.00%
Monthly Installments Up to 120
3-7 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Discount 20.00%
Monthly Installments Up to 60
0-3 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Discount 15.00%
Monthly Installments Up to 36
Bottom of range [member] | 7-10 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Time remaining to the end of the Lock-up period 7 years
Bottom of range [member] | 3-7 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Time remaining to the end of the Lock-up period 3 years
Bottom of range [member] | 0-3 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Time remaining to the end of the Lock-up period 0 years
Top of range [member] | 7-10 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Time remaining to the end of the Lock-up period 10 years
Top of range [member] | 3-7 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Time remaining to the end of the Lock-up period 7 years
Top of range [member] | 0-3 years [member]  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Time remaining to the end of the Lock-up period 3 years