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Employee Benefits - Actuarial Assumptions (Details)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Financial:      
Discount rate used to calculate the defined benefit obligation 10.50% 10.20% 9.90%
Salary increase 4.75% 4.75% 4.75%
Future pension increases 3.75% 3.75% 3.75%
Healthcare cost increase rate 6.00% 6.00% 6.00%
Biometric:      
Normal retirement age 60 years 60 years 60 years