v3.26.1
Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by Component) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning of period     $ 1,992,555  
Other comprehensive income (loss), net of tax $ (5,536) $ 54,939 (9,164) $ 40,879
End of period 2,221,895 1,913,046 2,221,895 1,913,046
Accumulated foreign currency translation        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning of period     (74,614)  
OCI before reclassifications     (13,651)  
Amounts reclassified from AOCIL     0  
Other comprehensive income (loss), net of tax     (13,651)  
End of period (88,265)   (88,265)  
Accumulated retirement liability        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning of period     (83,312)  
OCI before reclassifications     148  
Amounts reclassified from AOCIL     5,124  
Other comprehensive income (loss), net of tax     5,272  
End of period (78,040)   (78,040)  
Accumulated gain (loss) on derivatives        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning of period     207  
OCI before reclassifications     (980)  
Amounts reclassified from AOCIL     195  
Other comprehensive income (loss), net of tax     (785)  
End of period (578)   (578)  
Total        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning of period (161,347) (216,872) (157,719) (202,812)
OCI before reclassifications     (14,483)  
Amounts reclassified from AOCIL     5,319  
Other comprehensive income (loss), net of tax (5,536) 54,939 (9,164) 40,879
End of period $ (166,883) $ (161,933) $ (166,883) $ (161,933)