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Postretirement benefits Schedule of assumptions used to determine benefit obligation (Details)
Dec. 31, 2021
Dec. 31, 2020
Other Postretirement Benefits Plan [Member]    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]    
Benefit Obligation, Discount Rate 2.06% 1.36%
Non - U.S. | Pension Plan [Member]    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]    
Benefit Obligation, Discount Rate 2.23% 1.80%
Benefit Obligation, Rate of Compensation Increase 3.63% 3.24%
UNITED STATES | Pension Plan [Member]    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]    
Benefit Obligation, Discount Rate 2.75% 2.32%
Interest crediting rate 4.10% 4.10%