US plans | Canadian plans | ||||||||||
12/31/2017 | 12/31/2016 | 12/31/2017 | 12/31/2016 | ||||||||
Discount rate | |||||||||||
Pension plans (End of the Year) (1) | 3.56 | % | 3.88 | % | 3.50 | % | 4.00 | % | |||
Pension plans (Current Service Cost) (2) | 4.01 | % | 3.98 | % | 4.15 | % | 4.25 | % | |||
Other plans (End of the Year) (1) | 3.10 | % | 3.47 | % | 3.50 | % | 4.00 | % | |||
Other plans (Current Service Cost) (2) | 3.67 | % | 3.28 | % | 4.15 | % | 4.25 | % | |||
Life expectancy at age 65 (in years) (3) | |||||||||||
Current pensioner - Male | 20 | 20 | 22 | 22 | |||||||
Current pensioner - Female | 22 | 22 | 24 | 24 | |||||||
Current member aged 45 - Male | 21 | 21 | 23 | 23 | |||||||
Current member aged 45 - Female | 24 | 24 | 25 | 25 | |||||||
(1) | Represents the discount rate used to calculate the accrued benefit obligation at the end of the year and applied to other components such as interest cost. |
(2) | Represents the discount rate used to calculate annual service cost. Beginning in 2017, the current service cost is calculated using a separate discount rate to reflect the longer duration of future benefit payments associated with the additional year of service to be earned by the plan's active participants. Previously, the current service cost was calculated using the same discount rate used to measure the defined benefit obligation for both active and retired participants. |
(3) | Utilizes mortality tables issued by the Society of Actuaries and the Canadian Institute of Actuaries. |