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Pension and Other Postretirement Benefits (Notes)
 6 Months Ended
Jun. 30, 2014
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
Pension and Other Postretirement Benefits
Pension and Other Postretirement Benefits
 

The Company provides noncontributory pension and various healthcare and life insurance benefits to most employees and retirees. The pension plan is not fully funded. The Company has contributed $196.5 to the master pension trust during 2014.  Of this total, $112.4 was made in the first half of 2014 and the remaining $84.1 was made in July. The Company does not expect to make any additional contributions during 2014.

Net periodic benefit cost (income) for pension and other postretirement benefits were as follows:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2014
 
2013
 
2014
 
2013
Pension Benefits
 
 
 
 
 
 
 
Service cost
$
0.3

 
$
0.6

 
$
0.7

 
$
1.2

Interest cost
36.3

 
34.7

 
73.0

 
69.4

Expected return on assets
(50.7
)
 
(46.2
)
 
(101.4
)
 
(92.1
)
Amortization of prior service cost
1.1

 
0.9

 
2.1

 
1.8

Amortization of (gain) loss
0.6

 
6.5

 
0.1

 
13.3

Net periodic benefit cost (income)
$
(12.4
)
 
$
(3.5
)
 
$
(25.5
)
 
$
(6.4
)
 
 
 
 
 
 
 
 
Other Postretirement Benefits
 
 
 
 
 
 
 
Service cost
$
1.0

 
$
1.2

 
$
2.0

 
$
2.4

Interest cost
5.1

 
5.2

 
10.1

 
10.5

Amortization of prior service cost (credit)
(18.3
)
 
(20.0
)
 
(36.6
)
 
(40.0
)
Amortization of (gain) loss
(0.4
)
 
0.6

 
(0.7
)
 
1.1

Net periodic benefit cost (income)
$
(12.6
)
 
$
(13.0
)
 
$
(25.2
)
 
$
(26.0
)


During the first quarter of 2014, the Company performed a remeasurement of an unfunded supplemental retirement plan as a result of lump sum benefit payments made to retired participants. The related settlement gain had a minimal effect on net periodic pension benefit income.