Revenue and Contract Balances - Summary of Contract Liabilities/Assets (Details) - USD ($) $ in Thousands	Dec. 29, 2024	Sep. 29, 2024
Disaggregation of Revenue [Line Items]
Contract assets	$ 122,310	$ 129,678
Contract liabilities - current	(359,957)	(351,738)
Contract liabilities - non-current	(8,035)	0
Net contract liabilities	(245,682)	(222,060)
Contract Retentions
Disaggregation of Revenue [Line Items]
Contract assets	$ 8,400	$ 7,900