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Pension and Postretirement Benefits - Weighted-Average Assumptions Used to Determine Projected Benefit Obligations and Periodic Benefit Cost (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Guaranteed minimum rate 4.45%   3.00%
Pension plans      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate for determining projected benefit obligation at December 31 4.83% 2.38% 1.98%
Discount rate in effect for determining service cost 1.64% 1.89% 2.10%
Discount rate in effect for determining interest cost 2.05% 1.47% 2.48%
Weighted average expected long-term return on plan assets 5.32% 5.70% 6.18%
Rate of compensation increase for determining projected benefit obligation at December 31 2.89% 2.88% 3.00%
Rate of compensation increase for determining net pension cost 2.81% 3.04% 3.00%
Pension plans | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Interest credit rates for cash balance 4.45% 4.45% 4.45%
Pension plans | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Interest credit rates for cash balance 3.94% 3.00% 3.00%
Postretirement benefit obligations      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate for determining projected benefit obligation at December 31 4.70% 1.80% 1.20%
Discount rate in effect for determining interest cost 2.00% 1.20% 2.10%