Postretirement Benefit Plans (Target Allocations) (Details) |
Dec. 31, 2023 |
Dec. 31, 2022 |
|---|---|---|
| Equity securities | ||
| Defined Benefit Plan Disclosure | ||
| Actual allocation of plan assets | 43.90% | 47.10% |
| Fixed income | ||
| Defined Benefit Plan Disclosure | ||
| Actual allocation of plan assets | 42.90% | 43.90% |
| Cash and other | ||
| Defined Benefit Plan Disclosure | ||
| Actual allocation of plan assets | 13.20% | 9.00% |
| Minimum | Equity securities | ||
| Defined Benefit Plan Disclosure | ||
| Target allocation percentages | 35.00% | |
| Minimum | Fixed income | ||
| Defined Benefit Plan Disclosure | ||
| Target allocation percentages | 45.00% | |
| Minimum | Cash and other | ||
| Defined Benefit Plan Disclosure | ||
| Target allocation percentages | 0.00% | |
| Maximum | Equity securities | ||
| Defined Benefit Plan Disclosure | ||
| Target allocation percentages | 75.00% | |
| Maximum | Fixed income | ||
| Defined Benefit Plan Disclosure | ||
| Target allocation percentages | 60.00% | |
| Maximum | Cash and other | ||
| Defined Benefit Plan Disclosure | ||
| Target allocation percentages | 15.00% |