XML 25 R13.htm IDEA: XBRL DOCUMENT v3.22.1
Retirement Benefits
3 Months Ended
Apr. 01, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Retirement Benefits Retirement Benefits
The components of net periodic benefit cost for retirement benefit plans were as follows (in thousands):
 Three Months Ended
 April 1,
2022
March 26,
2021
Pension Benefits
Service cost
$2,170 $2,721 
Interest cost
2,738 2,981 
Expected return on assets
(4,802)(5,130)
Amortization and other
1,076 2,551 
Net periodic benefit cost
$1,182 $3,123 
Postretirement Medical
Service cost
$175 $175 
Interest cost
225 250 
Amortization
175 250 
Net periodic benefit cost
$575 $675