CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 10,044	$ 11,519	$ 41,570	$ 45,406
Other comprehensive income/(loss):
Change in foreign currency translation, net of tax	(219)	(590)	(123)	(287)
Change in unrealized gains/losses on derivative instruments, net of tax:
Change in fair value of derivatives	(108)	109	(492)	170
Adjustment for net (gains)/losses realized and included in net income	(44)	978	(107)	873
Total change in unrealized gains/losses on derivative instruments	(152)	1,087	(599)	1,043
Change in unrealized gains/losses on marketable securities, net of tax:
Change in fair value of marketable securities	1,253	(568)	3,405	(3,417)
Adjustment for net (gains)/losses realized and included in net income	(22)	24	43	(22)
Total change in unrealized gains/losses on marketable securities	1,231	(544)	3,448	(3,439)
Total other comprehensive income/(loss)	860	(47)	2,726	(2,683)
Total comprehensive income	$ 10,904	$ 11,472	$ 44,296	$ 42,723