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Pension Plans (Tables)
6 Months Ended
Jun. 30, 2012
Pension and Other Postretirement Benefit Expense [Abstract]  
Schedule of Net Periodic Defined Benefit Pension Cost
The Company’s net periodic defined benefit pension cost is comprised of the following components (in millions):
 
 
Three Months Ended
 
Six Months Ended
 
June 30,
2012
 
July 2,
2011
 
June 30,
2012
 
July 2,
2011
Service cost
$
0.6

 
$
0.6

 
$
1.2

 
$
1.3

Interest cost
1.8

 
2.0

 
3.7

 
4.0

Expected return on plan assets
(1.9
)
 
(1.8
)
 
(3.7
)
 
(3.6
)
Amortization of prior service cost and net actuarial loss
1.0

 
0.9

 
1.9

 
1.8

Net periodic benefit expense
$
1.5

 
$
1.7

 
$
3.1

 
$
3.5