CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Statement of Cash Flows [Abstract]
Cash and cash equivalents, beginning of the year	$ 21,120	$ 13,844	$ 14,259
Operating activities:
Net income	45,687	53,394	39,510
Adjustments to reconcile net income to cash generated by operating activities:
Depreciation and amortization	10,505	11,257	7,946
Share-based compensation expense	4,210	3,586	2,863
Deferred income tax expense	4,938	1,382	2,347
Changes in operating assets and liabilities:
Accounts receivable, net	1,095	611	(4,232)
Inventories	217	(238)	(76)
Vendor non-trade receivables	(51)	(3,735)	(2,220)
Other current and non-current assets	1,090	(179)	167
Accounts payable	1,791	5,400	5,938
Deferred revenue	(1,554)	1,042	1,460
Other current and non-current liabilities	(2,104)	8,746	6,010
Cash generated by operating activities	65,824	81,266	59,713
Investing activities:
Purchases of marketable securities	(142,428)	(166,402)	(217,128)
Proceeds from maturities of marketable securities	21,258	14,538	18,810
Proceeds from sales of marketable securities	90,536	107,447	189,301
Payments made in connection with business acquisitions, net	(297)	(343)	(3,765)
Payments for acquisition of property, plant and equipment	(12,734)	(11,247)	(9,571)
Payments for acquisition of intangible assets	(814)	(241)	(242)
Payments for strategic investments	(1,388)	0	(10)
Other	(110)	(26)	26
Cash used in investing activities	(45,977)	(56,274)	(22,579)
Financing activities:
Proceeds from issuance of common stock	495	543	730
Excess tax benefits from equity awards	407	749	739
Payments for taxes related to net share settlement of equity awards	(1,570)	(1,499)	(1,158)
Payments for dividends and dividend equivalents	(12,150)	(11,561)	(11,126)
Repurchases of common stock	(29,722)	(35,253)	(45,000)
Proceeds from issuance of term debt, net	24,954	27,114	11,960
Repayments of term debt	(2,500)	0	0
Change in commercial paper, net	(397)	2,191	6,306
Cash used in financing activities	(20,483)	(17,716)	(37,549)
Increase/(Decrease) in cash and cash equivalents	(636)	7,276	(415)
Cash and cash equivalents, end of the year	20,484	21,120	13,844
Supplemental cash flow disclosure:
Cash paid for income taxes, net	10,444	13,252	10,026
Cash paid for interest	$ 1,316	$ 514	$ 339