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Retirement Benefit Plans
 6 Months Ended
Jun. 27, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Retirement Benefit Plans
Retirement Benefit Plans
Components of net periodic benefit cost for the second quarter and year-to-date periods ended June 27, 2015 and June 28, 2014 were as follows:
 
Second Quarter
 
Year-to-Date
 
Pension benefits
 
Post-retirement benefits
 
Pension benefits
 
Post-retirement benefits
(In millions)
2015
 
2014
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Service cost
$
2.7

 
$
2.8

 
$
—

 
$
0.1

 
$
5.5

 
$
5.6

 
$
—

 
$
0.1

Interest cost
1.7

 
2.2

 
0.2

 
0.2

 
3.5

 
4.4

 
0.4

 
0.6

Expected return on plan assets
(1.4
)
 
(1.5
)
 
—

 
—

 
(2.8
)
 
(3.1
)
 
—

 
—

Settlement/curtailment
0.4

 
—

 
—

 
—

 
0.4

 
—

 
—

 
—

Net amortization
1.1

 
0.6

 
(0.3
)
 
(0.1
)
 
2.1

 
1.2

 
(0.6
)
 
(0.3
)
Net periodic benefit cost
$
4.5

 
$
4.1

 
$
(0.1
)
 
$
0.2

 
$
8.7

 
$
8.1

 
$
(0.2
)
 
$
0.4


During the year-to-date periods ended June 27, 2015 and June 28, 2014, approximately $1.9 million and $0.9 million, respectively, of pretax expenses were reclassified from other comprehensive income to a component of net periodic benefit cost. As they relate to foreign plans, the Company uses current exchange rates to make these reclassifications. The impact of exchange rate fluctuations is included on the net amortization line of the table above.