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Retirement Employee Benefits - Schedule of Main Actuarial Assumptions at Reporting Date (Detail)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of defined benefit plans [abstract]      
Discount of the projected benefit obligation at present value 9.70% 10.20% 8.00%
Salary increase 5.30% 6.00% 6.00%
Remaining labor life 15 years 10 months 24 days 15 years 8 months 12 days 16 years 1 month 6 days
Inflation 3.80% 5.80% 7.10%