XML 127 R94.htm IDEA: XBRL DOCUMENT v3.22.4
Employee Benefits - Net Periodic Benefit Costs Actuarial Assumptions (Details)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Ultimate health care cost trend rate 4.50%    
Combined Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Rate of compensation increase 3.25% 3.25% 3.25%
Expected long-term rate of return on plan assets 5.50% 5.50% 6.50%
Combined Pension Plan | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 2.29% 1.70% 2.79%
Combined Pension Plan | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 3.12% 2.88% 3.55%
Post-Retirement Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on plan assets 4.00% 4.00% 4.00%
Ultimate health care cost trend rate 4.50% 4.50% 4.50%
Post-Retirement Benefit Plans | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 2.19% 1.58% 1.69%
Initial health care cost trend rate 5.00% 5.00% 5.00%
Post-Retirement Benefit Plans | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.78% 2.60% 3.35%
Initial health care cost trend rate 5.75% 6.25% 6.50%