Segment Information and Geographic Data - Reconciliation of Segment Operating Income to the Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Mar. 30, 2024	Apr. 01, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ 27,900	$ 28,318	$ 68,273	$ 64,334
Research and development expense	(7,903)	(7,457)	(15,599)	(15,166)
Operating segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	37,706	37,488	87,794	82,893
Segment reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Research and development expense	(7,903)	(7,457)	(15,599)	(15,166)
Corporate non-segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other corporate expenses, net	$ (1,903)	$ (1,713)	$ (3,922)	$ (3,393)