XML 230 R99.htm IDEA: XBRL DOCUMENT v3.22.4
Benefit Plans - Significant Assumptions Used, Pension Plans (Details) - Pension Plans
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Primary Plan      
Projected benefit obligation at the measurement date:      
Discount rate 5.33% 2.97% 2.66%
Net periodic pension cost for the fiscal year:      
Discount rate 2.97% 2.66% 3.36%
Weighted average expected long-term rate of return of plan assets 3.00% 4.75% 5.50%
Bargaining Plan      
Projected benefit obligation at the measurement date:      
Discount rate 5.34% 3.31% 3.12%
Net periodic pension cost for the fiscal year:      
Discount rate 3.31% 3.12% 3.61%
Weighted average expected long-term rate of return of plan assets 5.50% 5.75% 6.25%