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Retirement Benefit Plans
 9 Months Ended
Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Retirement Benefit Plans
Retirement Benefit Plans

The Company has a number of defined benefit pension plans and other postretirement benefit plans covering eligible salaried and hourly employees and their dependents. The estimated contributions to the Company's defined benefit pension plans for 2015 range from $25.0 million to $35.0 million, of which $14.4 million has been contributed through the first nine months of the year. The other postretirement benefit plans, which provide medical and life insurance benefits, are unfunded plans.

In July 2014, the Company discharged certain U.S. pension plan obligations by making lump-sum payments to former employees of the Company. As a result of this action, the Company recorded a settlement loss of $2.7 million in the U.S. pension plan during the third quarter of 2014.

The components of net periodic benefit cost recorded in the Condensed Consolidated Statements of Operations are as follows:
 
 
Pension benefits
 
Other postretirement
employee benefits
(in millions)
 
2015
 
2014
 
Three Months Ended September 30,
 
US
 
Non-US
 
US
 
Non-US
 
2015
 
2014
Service cost
 
$
—

 
$
3.6

 
$
—

 
$
3.3

 
$
—

 
$
0.1

Interest cost
 
2.8

 
3.5

 
2.9

 
4.5

 
1.4

 
1.6

Expected return on plan assets
 
(4.3
)
 
(6.1
)
 
(4.4
)
 
(5.3
)
 
—

 
—

Settlement
 
—

 
—

 
2.7

 
—

 
—

 
—

Amortization of unrecognized prior service benefit
 
(0.2
)
 
—

 
(0.2
)
 
—

 
(1.4
)
 
(1.5
)
Amortization of unrecognized loss
 
1.6

 
1.6

 
1.6

 
1.1

 
0.8

 
0.7

Net periodic benefit (income) cost
 
$
(0.1
)
 
$
2.6

 
$
2.6

 
$
3.6

 
$
0.8

 
$
0.9

 
 
Pension benefits
 
Other postretirement
employee benefits
(in millions)
 
2015
 
2014
 
Nine Months Ended September 30,
 
US
 
Non-US
 
US
 
Non-US
 
2015
 
2014
Service cost
 
$
—

 
$
11.0

 
$
—

 
$
9.8

 
$
0.1

 
$
0.2

Interest cost
 
8.3

 
10.6

 
9.1

 
13.8

 
4.2

 
5.0

Expected return on plan assets
 
(12.9
)
 
(18.5
)
 
(13.2
)
 
(16.1
)
 
—

 
—

Settlement
 
—

 
—

 
2.7

 
—

 
—

 
—

Amortization of unrecognized prior service benefit
 
(0.6
)
 
—

 
(0.6
)
 
—

 
(4.2
)
 
(4.7
)
Amortization of unrecognized loss
 
4.9

 
5.0

 
4.9

 
3.6

 
2.3

 
2.0

Net periodic benefit (income) cost
 
$
(0.3
)
 
$
8.1

 
$
2.9

 
$
11.1

 
$
2.4

 
$
2.5