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Pension Benefits - Actuarial assumptions (Details)
Dec. 31, 2022
Dec. 31, 2021
Minimum    
Pension Benefits    
Discount rate 5.13% 2.10%
Rate of increase in compensation level 7.50% 7.00%
Maximum    
Pension Benefits    
Discount rate 20.00% 12.03%
Rate of increase in compensation level 20.00% 10.00%