CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common stock and additional paid-in capital	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive income/(loss)	Accumulated other comprehensive income/(loss) Cumulative Effect, Period of Adoption, Adjustment
Beginning balances at Sep. 30, 2017	$ 134,047	$ 35,867	$ 98,330	$ 278	$ (150)	$ (278)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued		669
Common stock withheld related to net share settlement of equity awards		(1,778)	(948)
Share-based compensation		5,443
Net income	59,531		59,531
Dividends and dividend equivalents declared			(13,735)
Common stock repurchased			(73,056)
Other comprehensive income/(loss)	(3,026)				(3,026)
Ending balances at Sep. 29, 2018	$ 107,147	40,201	70,400	2,501	(3,454)	89
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends and dividend equivalents declared per share or RSU (in dollars per share or RSU)	$ 0.68
Common stock issued		781
Common stock withheld related to net share settlement of equity awards		(2,002)	(1,029)
Share-based compensation		6,194
Net income	$ 55,256		55,256
Dividends and dividend equivalents declared			(14,129)
Common stock repurchased			(67,101)
Other comprehensive income/(loss)	2,781				2,781
Ending balances at Sep. 28, 2019	$ 90,488	45,174	45,898	$ (136)	(584)	$ 136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends and dividend equivalents declared per share or RSU (in dollars per share or RSU)	$ 0.75
Common stock issued		880
Common stock withheld related to net share settlement of equity awards		(2,250)	(1,604)
Share-based compensation		6,975
Net income	$ 57,411		57,411
Dividends and dividend equivalents declared			(14,087)
Common stock repurchased	(72,500)		(72,516)
Other comprehensive income/(loss)	42				42
Ending balances at Sep. 26, 2020	$ 65,339	$ 50,779	$ 14,966		$ (406)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends and dividend equivalents declared per share or RSU (in dollars per share or RSU)	$ 0.795