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Net defined benefit assets (liability) - Summary of Sensitivity Analysis for Actuarial Assumptions (Detail)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of sensitivity analysis for actuarial assumptions [line items]      
Actuarial assumption rate 0.50% 0.50% 0.50%
Discount rate      
Disclosure of sensitivity analysis for actuarial assumptions [line items]      
Actuarial assumption rate 6.70% 5.90% 2.90%
Compensation - salary increase      
Disclosure of sensitivity analysis for actuarial assumptions [line items]      
Actuarial assumption rate 4.00% 4.00% 4.00%
Mortality      
Disclosure of sensitivity analysis for actuarial assumptions [line items]      
Demographic assumptions, Mortality Panama expirence    
Termination      
Disclosure of sensitivity analysis for actuarial assumptions [line items]      
Demographic assumptions, Mortality 2003 SoA pension plan    
Males      
Disclosure of sensitivity analysis for actuarial assumptions [line items]      
Retirement age 62 years 62 years 62 years
Females      
Disclosure of sensitivity analysis for actuarial assumptions [line items]      
Retirement age 57 years 57 years 57 years