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Retirement Plans (Tables)
3 Months Ended
Mar. 31, 2018
Compensation and Retirement Disclosure [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
(In millions)
March 31,
2018
 
April 1,
2017
Service cost pertaining to benefits earned during the period
$
1.6

 
$
1.8

Interest cost on projected benefit obligations
4.1

 
4.4

Expected return on pension assets
(5.0
)
 
(4.9
)
Net amortization loss
0.8

 
2.4

Net pension expense
$
1.5

 
$
3.7

The non-service cost components of net pension expense is recorded in the Other expense (income), net line item on the consolidated condensed financial statements.