Acquisition and Divestiture - Schedule of Preliminary Allocation of the Purchase Price (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2025	Sep. 27, 2024	Sep. 29, 2023
Preliminary Allocation of Purchase Price
Goodwill	$ 5,703	$ 5,556	$ 2,891
Measurement Period Adjustments, Net
Goodwill	339
CMS
Preliminary Allocation of Purchase Price
Cash and cash equivalents	488	488
Accounts receivable	979	1,043
Prepaid expenses and other current assets	48	82
Property and equipment	69	72
Equity method investments	67	17
Goodwill	3,004	2,665
Intangible assets	1,805	1,860
Other long-term assets	144	107
Current portion of long-term debt	(8)	(8)
Accounts payable	(260)	(257)
Accrued compensation and benefits	(263)	(285)
Contract liabilities	(97)	(48)
Other current liabilities	(288)	(98)
Long-term debt, net of current portion	(1,122)	(1,122)
Deferred tax liabilities	(292)	(353)
Other long-term liabilities	(115)	(75)
Non-controlling interests	(127)	(63)
Total consideration	4,032	$ 4,025
Measurement Period Adjustments, Net
Accounts receivable	(64)
Prepaid expenses and other current assets	(34)
Property and equipment	(3)
Equity method investments	50
Goodwill	339
Intangible assets	(55)
Other long-term assets	37
Accounts payable	(3)
Accrued compensation and benefits	22
Contract liabilities	(49)
Other current liabilities	(190)
Deferred tax liabilities	61
Other long-term liabilities	(40)
Non-controlling interests	(64)
Total consideration	$ 7