Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Programs (Tables)

v3.10.0.1
Pension and Other Postretirement Benefit Programs (Tables)
6 Months Ended
Jun. 30, 2018
Retirement Benefits [Abstract]  
Summary of Pension and Postretirement Expenses
The following table summarizes our pension and postretirement expense:
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2018
 
2017
 
2018
 
2017
Defined-benefit pension, U.S.
 
 
 
 
 
 
 
Service cost
$
1.0

 
$
1.3

 
$
1.9

 
$
2.7

Interest cost
3.6

 
3.9

 
7.3

 
7.8

Expected return on plan assets
(5.5
)
 
(5.6
)
 
(11.1
)
 
(11.2
)
Amortization of prior service cost

 
0.1

 

 
0.2

Amortization of net actuarial loss
2.7

 
2.6

 
5.4

 
5.1

Total, defined-benefit pension, U.S.
$
1.8

 
$
2.3

 
$
3.5

 
$
4.6

Defined-benefit pension, Canada
 
 
 
 
 
 
 
Interest cost
$
0.2

 
$
0.1

 
$
0.3

 
$
0.3

Expected return on plan assets
(0.2
)
 
(0.2
)
 
(0.4
)
 
(0.4
)
Amortization of net actuarial loss

 
0.1

 
0.1

 
0.1

Total, defined-benefit pension, Canada
$

 
$

 
$

 
$

Defined-benefit postretirement, U.S.
 
 
 
 
 
 
 
Service cost
$
0.1

 
$
0.1

 
$
0.2

 
$
0.2

Interest cost
0.7

 
0.9

 
1.3

 
1.7

Amortization of net actuarial gains
(0.7
)
 
(0.6
)
 
(1.3
)
 
(1.2
)
Total, defined-benefit postretirement, U.S.
$
0.1

 
$
0.4

 
$
0.2

 
$
0.7