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Benefit Plans - Assumptions Used (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pension benefits      
Weighted average assumptions used in net periodic benefit cost:      
Discount rate 2.48% 2.29% 2.61%
Rate of compensation increase 2.79% 2.41% 2.33%
Expected long-term rate of return on assets 4.14% 4.93% 5.10%
Weighted average assumptions used in benefit obligations:      
Discount rate 4.35% 2.48%  
Rate of compensation increase 3.09% 2.79%  
Other retirement benefits      
Weighted average assumptions used in net periodic benefit cost:      
Discount rate 2.75% 2.30% 3.20%
Rate of compensation increase 0.00% 0.00% 0.00%
Expected long-term rate of return on assets 0.00% 0.00% 0.00%
Weighted average assumptions used in benefit obligations:      
Discount rate 5.55% 2.75%  
Rate of compensation increase 0.00% 0.00%