Pension and Other Postretirement Benefits - Defined Benefit Plan Assumptions Used to Calculate Net Periodic Benefit Cost (Details) |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
Defined Benefit Pension Plans | |||
Defined Benefit Plan Disclosure [Line Items] | |||
Discount rate | 2.80% | 2.80% | 2.70% |
Expected long - term return on plan assets | 5.90% | 6.40% | 6.30% |
Postretirement Benefit Plans | |||
Defined Benefit Plan Disclosure [Line Items] | |||
Discount rate | 2.60% | 2.10% | 2.80% |
Expected long - term return on plan assets | 5.90% | 6.40% | 5.80% |
Health care trend rate assumed for next year | 5.50% | 5.80% | 6.00% |
Ultimate health care trend rate | 4.20% | 4.50% | 4.50% |
Supplemental Retirement Plans | |||
Defined Benefit Plan Disclosure [Line Items] | |||
Discount rate | 2.80% | 2.40% | 2.40% |