Selected Quarterly Financial Information (Unaudited) - Summary of Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Sep. 29, 2018	Sep. 30, 2017	Sep. 24, 2016
Selected Quarterly Financial Information [Abstract]
Net sales	$ 62,900	$ 53,265	$ 61,137	$ 88,293	$ 52,579	$ 45,408	$ 52,896	$ 78,351	$ 265,595	$ 229,234	$ 215,639
Gross margin	24,084	20,421	23,422	33,912	19,931	17,488	20,591	30,176	101,839	88,186	84,263
Net income	$ 14,125	$ 11,519	$ 13,822	$ 20,065	$ 10,714	$ 8,717	$ 11,029	$ 17,891	$ 59,531	$ 48,351	$ 45,687
Earnings per share:
Basic (in dollars per share)	$ 2.94	$ 2.36	$ 2.75	$ 3.92	$ 2.08	$ 1.68	$ 2.11	$ 3.38	$ 12.01	$ 9.27	$ 8.35
Diluted (in dollars per share)	$ 2.91	$ 2.34	$ 2.73	$ 3.89	$ 2.07	$ 1.67	$ 2.10	$ 3.36	$ 11.91	$ 9.21	$ 8.31