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Income tax expense - Additional information (Detail)
12 Months Ended
Mar. 12, 2023
Jan. 01, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Major components of tax expense (income) [abstract]              
Percentage of additional tax over deduction amounts (included in 2022 tax returns) and tax bases subject to reduced corporate tax 10.00%            
Corporate tax rate   20.00% 25.00% 25.00% 23.00% 25.00% 20.00%
Corporate tax rate for banks, consumer finance companies, factoring and financial leasing companies, electronic payment and money institutions, authorized foreign exchange institutions, asset management companies, capital market institutions, insurance and reinsurance companies       30.00% 25.00%   25.00%
Tax rate used to recognize deferred taxes         20.00% 20.00%  
Allowed percentage deduction of research and development expenses     100.00%        
Dividend payments, withholding tax     10.00%        
Percentage of exemption from corporate tax for profits arising from sale of founding shares, redeemed shares and priority rights held     75.00%        
Minimum holding period for founding shares, redeemed shares and priority rights for tax exemption     2 years        
Percentage of exemption from corporate tax for immovables held       50.00%      
Percentage of exemption from corporate tax for immovables held before 15 July 2023     25.00%        
Minimum holding period for immovables for tax exemption     2 years        
Period during which exempted earnings are considered lost if transferred in any way other than being added to capital     5 years