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Other non-current liabilities and employee future benefits - Actuarial Assumptions (Details)
Dec. 31, 2024
Dec. 31, 2023
Net defined benefit pension plan liability (asset)    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Discount rate, fair value benefit obligation   4.88%
Discount rate, net expense   5.00%
Net other post-retirement benefit plan liability    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Discount rate, fair value benefit obligation 5.32% 4.67%
Discount rate, net expense 5.32% 4.67%