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Employee Stock Purchase and Stock Incentive Plans - Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares
 12 Months Ended
Sep. 27, 2024
Sep. 29, 2023
Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Number of stock options outstanding, beginning balance (in shares) 217,481 439,349 573,984
Number of stock options, Granted (in shares)     150,951
Number of stock options, Exercised (in shares) (132,898) (215,649) (284,502)
Number of stock options, Canceled or expired (in shares) (7,608) (6,219) (1,084)
Number of stock options, Adjustment to Jacobs awards related to the Separation Transaction (in shares) 13,821    
Number of stock options outstanding, ending balance (in shares) 90,796 217,481 439,349
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Weighted Average Exercise Price, beginning balance (in dollars per share) $ 31.43 $ 35.77 $ 45.65
Weighted Average Exercise Price, Granted (in dollars per share)     12.79
Weighted Average Exercise Price, Exercised (in dollars per share) 37.25 40.61 43.56
Weighted Average Exercise Price, Canceled or expired (in dollars per share) 20.44 19.73 21.34
Weighted Average Exercise Price, Adjustment to Jacobs awards related to the Separation Transaction (in dollars per share) 0    
Weighted Average Exercise Price, ending balance (in dollars per share) $ 19.03 $ 31.43 $ 35.77