Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018
Cash flows from operating activities:
Net income	$ 3,619	$ 2,706	$ 3,038
Adjustments required to reconcile net income to cash provided by operating activities:
Depreciation and amortization	376	363	457
Deferred income taxes	80	49	71
Other	60	(19)	4
Share-based compensation	307	263	258
Changes in operating assets and liabilities, net of amounts acquired:
Accounts receivable	(427)	(207)	16
Inventories	(421)	248	(1,014)
Other current and non-current assets	(161)	(86)	(199)
Accounts payable and accrued expenses	327	(247)	170
Contract liabilities	(16)	135	75
Income taxes payable	(10)	44	886
Other liabilities	70	(2)	25
Cash provided by operating activities	3,804	3,247	3,787
Cash flows from investing activities:
Capital expenditures	(422)	(441)	(622)
Cash paid for acquisitions, net of cash acquired	(107)	(28)	(6)
Proceeds from sales and maturities of investments	1,754	1,940	3,276
Purchases of investments	(1,355)	(1,914)	(2,077)
Cash provided by (used in) investing activities	(130)	(443)	571
Cash flows from financing activities:
Debt borrowings, net of issuance costs	2,979	0	0
Debt repayments	(2,882)	0	0
Proceeds from common stock issuances	174	145	124
Common stock repurchases	(649)	(2,403)	(5,283)
Tax withholding payments for vested equity awards	(172)	(86)	(164)
Payments of dividends to stockholders	(787)	(771)	(605)
Cash used in financing activities	(1,337)	(3,115)	(5,928)
Increase (decrease) in cash and cash equivalents	2,337	(311)	(1,570)
Cash and cash equivalents - beginning of year	3,129	3,440	5,010
Cash and cash equivalents - end of year	5,466	3,129	3,440
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Total cash, cash equivalents, and restricted cash equivalents	3,129	3,440	3,440
Supplemental cash flow information:
Cash payments for income taxes	542	522	300
Cash refunds from income taxes	68	22	63
Cash payments for interest	$ 219	$ 219	$ 219