|
|
|
Pension benefits |
|
Postretirement benefits |
|
||||||||
|
|
|
2017 |
|
2016 |
|
2017 |
|
2016 |
|
||||
|
|
|
|
|
|
|
|
|
|
|
||||
|
Change in benefit obligations |
|
|
|
|
|
|
|
|
|
||||
|
Benefit obligations at the beginning of the year |
|
$ |
1,274.9 |
|
$ |
1,220.3 |
|
$ |
73.4 |
|
$ |
69.2 |
|
|
Service costs |
|
33.9 |
|
34.9 |
|
1.9 |
|
1.8 |
|
||||
|
Interest costs |
|
49.8 |
|
49.3 |
|
2.9 |
|
2.8 |
|
||||
|
Plan participants’ contributions |
|
11.5 |
|
11.9 |
|
— |
|
— |
|
||||
|
Actuarial loss (gain) arising from: |
|
|
|
|
|
|
|
|
|
||||
|
Financial assumptions |
|
82.1 |
|
20.6 |
|
5.4 |
|
1.4 |
|
||||
|
Demographic assumptions |
|
(8.6 |
) |
— |
|
— |
|
— |
|
||||
|
Participant experience |
|
4.5 |
|
(0.5 |
) |
(21.2 |
) |
— |
|
||||
|
Benefits and settlements paid |
|
(72.7 |
) |
(62.2 |
) |
(1.9 |
) |
(1.8 |
) |
||||
|
Plan transfer |
|
(55.4 |
) |
— |
|
— |
|
— |
|
||||
|
Other |
|
0.4 |
|
0.6 |
|
— |
|
— |
|
||||
|
|
|
|
|
|
|
|
|
|
|
||||
|
Benefit obligations at the end of the year |
|
$ |
1,320.4 |
|
$ |
1,274.9 |
|
$ |
60.5 |
|
$ |
73.4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
Change in plan assets |
|
|
|
|
|
|
|
|
|
||||
|
Fair value of plan assets at the beginning of the year |
|
$ |
1,244.4 |
|
$ |
1,164.8 |
|
$ |
— |
|
$ |
— |
|
|
Actual return on plan assets |
|
106.5 |
|
98.0 |
|
— |
|
— |
|
||||
|
Employer contributions |
|
35.5 |
|
34.2 |
|
1.9 |
|
1.8 |
|
||||
|
Plan participants’ contributions |
|
11.5 |
|
11.9 |
|
— |
|
— |
|
||||
|
Administrative fees |
|
(2.5 |
) |
(2.3 |
) |
— |
|
— |
|
||||
|
Benefits and settlements paid |
|
(72.7 |
) |
(62.2 |
) |
(1.9 |
) |
(1.8 |
) |
||||
|
Plan transfer |
|
(55.4 |
) |
— |
|
— |
|
— |
|
||||
|
|
|
|
|
|
|
|
|
|
|
||||
|
Fair value of plan assets at the end of the year |
|
$ |
1,267.3 |
|
$ |
1,244.4 |
|
$ |
— |
|
$ |
— |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|