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Retirement Plans (Tables)
9 Months Ended
Sep. 28, 2019
Retirement Benefits [Abstract]  
Summary of Net Pension and SERP Expense Recognized
The following is a summary of net pension and Supplemental Executive Retirement Plan (“SERP”) expense recognized by the Company.
 
Quarter Ended
 
Year-To-Date Ended
(In millions)
September 28,
2019
 
September 29,
2018
 
September 28,
2019
 
September 29,
2018
Service cost pertaining to benefits earned during the period
$
1.3

 
$
1.5

 
$
4.1

 
$
4.6

Interest cost on projected benefit obligations
3.8

 
4.1

 
11.4

 
12.4

Expected return on pension assets
(4.4
)
 
(5.4
)
 
(13.3
)
 
(15.5
)
Net amortization loss
0.7

 
0.8

 
2.0

 
2.5

Net pension expense
$
1.4

 
$
1.0

 
$
4.2

 
$
4.0