Impact of a 0.5% Change in Key Assumptions
| Dollars (millions) | |||||||||
| Pension Plans | Other Plans | ||||||||
| Obligation | Expense | Obligation | Expense | ||||||
| Discount rate | |||||||||
| Decrease in assumption | $ | 42.5 | $ | 4.0 | $ | 19.5 | $ | 2.2 | |
| Increase in assumption | (38.3) | (3.6) | (18.3) | (2.1) | |||||
| Expected long-term rate of return | |||||||||
| Decrease in assumption | n/a | 3.2 | n/a | n/a | |||||
| Increase in assumption | n/a | (3.2) | n/a | n/a | |||||
| Rate of compensation increase | |||||||||
| Decrease in assumption | (6.9) | (1.4) | (0.2) | – | |||||
| Increase in assumption | 7.0 | 1.5 | 0.2 | – | |||||
| Medical trend rate | |||||||||
| Decrease in assumption | n/a | n/a | (15.2) | (2.8) | |||||
| Increase in assumption | n/a | n/a | 17.7 | 3.3 | |||||
| n/a = not applicable | |||||||||