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Pension Plans and Other Postretirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]  
Schedule Of Defined Benefit Plans Disclosures
For the three month periods ended September 30, 2014 and 2013, the components of pension expense and components of 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,
 
2014
 
2013
 
2014
 
2013
Service cost - benefits earned during the year
$
7.3

 
$
10.0

 
$
0.7

 
$
0.8

Interest cost on benefits earned in prior years
33.4

 
30.3

 
6.0

 
5.6

Expected return on plan assets
(46.1
)
 
(43.8
)
 
(0.1
)
 
(0.1
)
Amortization of prior service cost (credit)
0.6

 
0.8

 
(0.8
)
 
(4.6
)
Amortization of net actuarial loss
18.5

 
29.2

 
3.6

 
4.3

Termination benefits
—

 
—

 
—

 
—

Total retirement benefit expense
$
13.7

 
$
26.5

 
$
9.4

 
$
6.0

For the nine month periods ended September 30, 2014 and 2013, the components of pension expense and components of 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,
 
2014
 
2013
 
2014
 
2013
Service cost - benefits earned during the year
$
22.0

 
$
30.0

 
$
2.1

 
$
2.4

Interest cost on benefits earned in prior years
100.2

 
90.9

 
18.0

 
16.8

Expected return on plan assets
(138.2
)
 
(131.4
)
 
(0.2
)
 
(0.3
)
Amortization of prior service cost (credit)
1.8

 
2.3

 
(2.3
)
 
(13.7
)
Amortization of net actuarial loss
55.5

 
87.6

 
10.6

 
12.9

Termination benefits
0.3

 
—

 
—

 
—

Total retirement benefit expense
$
41.6

 
$
79.4

 
$
28.2

 
$
18.1