CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 19,965	$ 20,065
Other comprehensive income/(loss):
Change in foreign currency translation, net of tax	(78)	40
Change in unrealized gains/losses on derivative instruments, net of tax:
Change in fair value of derivatives	(334)	88
Adjustment for net (gains)/losses realized and included in net income	42	102
Total change in unrealized gains/losses on derivative instruments	(292)	190
Change in unrealized gains/losses on marketable securities, net of tax:
Change in fair value of marketable securities	110	(846)
Adjustment for net (gains)/losses realized and included in net income	37	(75)
Total change in unrealized gains/losses on marketable securities	147	(921)
Total other comprehensive income/(loss)	(223)	(691)
Total comprehensive income	$ 19,742	$ 19,374