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Benefit Plans - Significant Assumptions Used, Pension Plans (Details) - Pension Plans - Bargaining Plan
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Projected benefit obligation at the measurement date:      
Discount rate 5.16% 5.34% 3.31%
Net periodic pension cost for the fiscal year:      
Discount rate 5.34% 3.31% 3.12%
Weighted average expected long-term rate of return of plan assets 7.00% 5.50% 5.75%