CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Jul. 01, 2017	Jun. 25, 2016
Statement of Cash Flows [Abstract]
Cash and cash equivalents, beginning of the period	$ 20,484	$ 21,120
Operating activities:
Net income	37,637	36,673
Adjustments to reconcile net income to cash generated by operating activities:
Depreciation and amortization	7,673	7,957
Share-based compensation expense	3,666	3,180
Deferred income tax expense	4,764	5,191
Other	(142)	419
Changes in operating assets and liabilities:
Accounts receivable, net	3,381	4,623
Inventories	(1,014)	518
Vendor non-trade receivables	3,312	6,166
Other current and non-current assets	(3,229)	1,049
Accounts payable	(5,212)	(9,567)
Deferred revenue	(418)	(1,148)
Other current and non-current liabilities	(2,476)	(5,363)
Cash generated by operating activities	47,942	49,698
Investing activities:
Purchases of marketable securities	(123,781)	(112,068)
Proceeds from maturities of marketable securities	19,347	14,915
Proceeds from sales of marketable securities	76,747	69,926
Payments made in connection with business acquisitions, net	(248)	(146)
Payments for acquisition of property, plant and equipment	(8,586)	(8,757)
Payments for acquisition of intangible assets	(209)	(753)
Payments for strategic investments, net	(87)	(1,376)
Other	313	(321)
Cash used in investing activities	(36,504)	(38,580)
Financing activities:
Proceeds from issuance of common stock	274	247
Excess tax benefits from equity awards	534	391
Payments for taxes related to net share settlement of equity awards	(1,646)	(1,361)
Payments for dividends and dividend equivalents	(9,499)	(9,058)
Repurchases of common stock	(25,105)	(23,696)
Proceeds from issuance of term debt, net	21,725	17,984
Repayments of term debt	(3,500)	(2,500)
Change in commercial paper, net	3,866	3,992
Cash used in financing activities	(13,351)	(14,001)
Increase/(Decrease) in cash and cash equivalents	(1,913)	(2,883)
Cash and cash equivalents, end of the period	18,571	18,237
Supplemental cash flow disclosure:
Cash paid for income taxes, net	9,752	8,990
Cash paid for interest	$ 1,456	$ 892