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Retirement Plans (Notes)
 9 Months Ended
Oct. 02, 2021
Retirement Benefits [Abstract]  
Retirement Plans RETIREMENT PLANS
The following is a summary of net pension and Supplemental Executive Retirement Plan (“SERP”) expense recognized by the Company.
 Quarter EndedYear-To-Date Ended
(In millions)October 2,
2021		September 26,
2020		October 2,
2021		September 26,
2020
Service cost pertaining to benefits earned during the period
$1.7 $1.6 $5.2 $4.8 
Interest cost on projected benefit obligations
3.2 3.6 9.6 10.7 
Expected return on pension assets
(4.8)(4.7)(14.6)(14.0)
Net amortization loss
3.4 1.6 10.3 4.9 
Net pension expense
$3.5 $2.1 $10.5 $6.4 
The non-service cost components of net pension expense is recorded in the Other expense (income), net line item on the consolidated condensed statements of operations and comprehensive income.