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Retirement Plans (Notes)
 6 Months Ended
Jul. 03, 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)July 3,
2021		June 27,
2020		July 3,
2021		June 27,
2020
Service cost pertaining to benefits earned during the period
$1.7 $1.6 $3.5 $3.2 
Interest cost on projected benefit obligations
3.2 3.6 6.4 7.1 
Expected return on pension assets
(4.9)(4.7)(9.8)(9.3)
Net amortization loss
3.5 1.7 6.9 3.3 
Net pension expense
$3.5 $2.2 $7.0 $4.3 
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.