XML 41 R30.htm IDEA: XBRL DOCUMENT v3.10.0.1
Retirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2018
Retirement Benefits [Abstract]  
Schedule Of Defined Benefit Plans Disclosures [Table Text Block]
For the three month periods ended September 30, 2018 and 2017, the components of pension and other postretirement benefit expense for the Company’s defined benefit plans included the following (in millions): 
 
Pension Benefits
 
Other Postretirement Benefits
 
Three months ended September 30,
 
Three months ended September 30,
 
2018
 
2017
 
2018
 
2017
Service cost - benefits earned during the year
$
4.1

 
$
3.5

 
$
0.6

 
$
0.6

Interest cost on benefits earned in prior years
26.2

 
29.2

 
3.2

 
3.7

Expected return on plan assets
(39.5
)
 
(36.7
)
 
—

 
—

Amortization of prior service cost (credit)
0.1

 
0.3

 
(0.8
)
 
(0.7
)
Amortization of net actuarial loss
16.5

 
15.6

 
2.7

 
2.2

Total retirement benefit expense
$
7.4

 
$
11.9

 
$
5.7

 
$
5.8

For the nine month periods ended September 30, 2018 and 2017, the components of pension and other postretirement benefit expense for the Company’s defined benefit plans included the following (in millions): 
 
Pension Benefits
 
Other Postretirement Benefits
 
Nine months ended September 30,
 
Nine months ended September 30,
 
2018
 
2017
 
2018
 
2017
Service cost - benefits earned during the year
$
12.4

 
$
10.5

 
$
1.8

 
$
1.8

Interest cost on benefits earned in prior years
78.5

 
87.6

 
9.5

 
11.0

Expected return on plan assets
(118.5
)
 
(110.1
)
 
—

 
—

Amortization of prior service cost (credit)
0.3

 
0.9

 
(2.2
)
 
(2.1
)
Amortization of net actuarial loss
49.5

 
46.9

 
8.0

 
6.7

Curtailment loss
0.4

 
—

 
—

 
—

Total retirement benefit expense
$
22.6

 
$
35.8

 
$
17.1

 
$
17.4