CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 94,680	$ 57,411	$ 55,256
Other comprehensive income/(loss):
Change in foreign currency translation, net of tax	501	88	(408)
Change in unrealized gains/losses on derivative instruments, net of tax:
Change in fair value of derivative instruments	32	79
Change in fair value of derivative instruments			(661)
Adjustment for net (gains)/losses realized and included in net income	1,003	(1,264)
Adjustment for net (gains)/losses realized and included in net income			23
Total change in unrealized gains/losses on derivative instruments	1,035	(1,185)
Total change in unrealized gains/losses on derivative instruments			(638)
Change in unrealized gains/losses on marketable debt securities, net of tax:
Change in fair value of marketable debt securities	(694)	1,202	3,802
Adjustment for net (gains)/losses realized and included in net income	(273)	(63)	25
Total change in unrealized gains/losses on marketable debt securities	(967)	1,139	3,827
Total other comprehensive income/(loss)	569	42	2,781
Total comprehensive income	$ 95,249	$ 57,453	$ 58,037