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Net defined benefit assets (liabilities) - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
wk
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Disclosure of net defined benefit asset (liability) [line items]      
Actuarial (loss) gain recognized in other comprehensive income | $ $ (0.2) $ (6.4) $ 2.1
Duration of defined benefit plan obligation 9 years 9 months 18 days 9 years 7 months 6 days  
Seniority Premium Plan      
Disclosure of net defined benefit asset (liability) [line items]      
Number of weeks salary per years of service | wk 1    
Average of monthly base salary, number of years 5 years