v3.26.1
Retirement Benefits
6 Months Ended
Jun. 26, 2026
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 EndedSix Months Ended
 June 26,
2026
June 27,
2025
June 26,
2026
June 27,
2025
Pension Benefits
Service cost
$1,166 $1,039 $2,332 $2,292 
Interest cost
2,647 2,568 5,295 4,711 
Expected return on assets
(3,273)(2,904)(6,548)(5,807)
Amortization and other
(74)202 (152)366 
Net periodic benefit cost
$466 $905 $927 $1,562 
Postretirement Medical
Service cost
$75 $78 $150 $153 
Interest cost
225 369 450 569 
Amortization
— (136)— (136)
Net periodic benefit cost
$300 $311 $600 $586