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Retirement Plans (Notes)
 9 Months Ended
Sep. 30, 2023
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)September 30,
2023		October 1,
2022		September 30,
2023		October 1,
2022
Service cost pertaining to benefits earned during the period
$0.7 $1.3 $2.3 $4.0 
Interest cost on projected benefit obligations
4.4 3.3 13.3 9.9 
Expected return on pension assets
(4.6)(5.1)(13.9)(15.4)
Net amortization loss
(0.1)2.9 (0.5)8.5 
Net pension expense
$0.4 $2.4 $1.2 $7.0 
The non-service cost components of net pension expense is recorded in the Other expense, net line item on the consolidated condensed statements of operations and comprehensive income.