CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 25, 2021	Dec. 26, 2020
Statement of Cash Flows [Abstract]
Cash, cash equivalents and restricted cash, beginning balances	$ 35,929	$ 39,789
Operating activities:
Net income	34,630	28,755
Adjustments to reconcile net income to cash generated by operating activities:
Depreciation and amortization	2,697	2,666
Share-based compensation expense	2,265	2,020
Deferred income tax expense/(benefit)	682	(58)
Other	167	25
Changes in operating assets and liabilities:
Accounts receivable, net	(3,934)	(10,945)
Inventories	681	(950)
Vendor non-trade receivables	(9,812)	(10,194)
Other current and non-current assets	(4,921)	(3,526)
Accounts payable	19,813	21,670
Deferred revenue	462	1,341
Other current and non-current liabilities	4,236	7,959
Cash generated by operating activities	46,966	38,763
Investing activities:
Purchases of marketable securities	(34,913)	(39,800)
Proceeds from maturities of marketable securities	11,309	25,177
Proceeds from sales of marketable securities	10,675	9,344
Payments for acquisition of property, plant and equipment	(2,803)	(3,500)
Other	(374)	195
Cash used in investing activities	(16,106)	(8,584)
Financing activities:
Payments for taxes related to net share settlement of equity awards	(2,888)	(2,861)
Payments for dividends and dividend equivalents	(3,732)	(3,613)
Repurchases of common stock	(20,478)	(24,775)
Repayments of term debt	0	(1,000)
Proceeds from/(Repayments of) commercial paper, net	(1,000)	22
Other	(61)	(22)
Cash used in financing activities	(28,159)	(32,249)
Increase/(Decrease) in cash, cash equivalents and restricted cash	2,701	(2,070)
Cash, cash equivalents and restricted cash, ending balances	38,630	37,719
Supplemental cash flow disclosure:
Cash paid for income taxes, net	5,235	1,787
Cash paid for interest	$ 531	$ 619