XML 70 R59.htm IDEA: XBRL DOCUMENT v3.25.2
Retirement Benefits (Details1) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 29, 2025
Jun. 30, 2024
Jun. 29, 2025
Jun. 30, 2024
Pension Plans Defined Benefit        
Defined Benefit Plan Disclosure [Line Items]        
Service cost - benefits earned during the year $ 1.4 $ 1.4 $ 2.7 $ 2.9
Interest cost on benefits earned in prior years 4.3 4.1 8.6 8.2
Expected return on plan assets (3.9) (4.1) (7.9) (8.2)
Amortization of prior service cost (credit) 0.1 0.0 0.2 0.1
Amortization of net actuarial loss 0.0 0.0 0.0 0.0
Total retirement benefit expense (income) 1.9 1.4 3.6 3.0
Other Postretirement Benefit Plan, Defined Benefit        
Defined Benefit Plan Disclosure [Line Items]        
Service cost - benefits earned during the year 0.1 0.1 0.2 0.2
Interest cost on benefits earned in prior years 2.5 2.6 4.9 5.1
Expected return on plan assets 0.0 0.0 0.0 0.0
Amortization of prior service cost (credit) (0.2) (0.2) (0.4) (0.4)
Amortization of net actuarial loss 1.3 1.3 2.6 2.6
Total retirement benefit expense (income) $ 3.7 $ 3.8 $ 7.3 $ 7.5