Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 29, 2024	Dec. 31, 2023	Sep. 29, 2024
Related Party Transaction [Line Items]
Revenue	$ 1,420,561	$ 1,228,267
Reimbursable costs	14,781	17,622
Accounts receivable, net	1,117,666		$ 1,051,461
Contract assets	122,310		129,678
Contract liabilities	(359,957)		(351,738)
Related Party
Related Party Transaction [Line Items]
Revenue	16,479	$ 18,968
Accounts receivable, net	13,932		15,612
Contract assets	1,701		1,625
Contract liabilities	$ (5,693)		$ (4,237)

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details