CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Apr. 26, 2020	Apr. 28, 2019
Cash flows from operating activities:
Net income	$ 917	$ 394
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	224	178
Depreciation and amortization	107	91
Deferred income taxes	16	(42)
Other	4	(2)
Changes in operating assets and liabilities:
Accounts receivable	(249)	182
Inventories	(151)	153
Prepaid expenses and other assets	(8)	5
Accounts payable	71	(123)
Accrued and other current liabilities	(32)	(129)
Other long-term liabilities	10	13
Net cash provided by operating activities	909	720
Cash flows from investing activities:
Proceeds from sales of marketable securities	1	26
Proceeds from maturities of marketable securities	0	2,219
Purchases of marketable securities	(861)	(622)
Purchases of property and equipment and intangible assets	(155)	(128)
Acquisition of business, net of cash acquired	(34)	0
Investments and other, net	(6)	0
Net cash provided by (used in) investing activities	(1,055)	1,495
Cash flows from financing activities:
Issuance of debt, net of issuance costs	4,979	0
Proceeds related to employee stock plans	88	83
Payments related to tax on restricted stock units	(222)	(211)
Dividends paid	(98)	(97)
Other	(3)	0
Net cash provided by (used in) financing activities	4,744	(225)
Change in cash and cash equivalents	4,598	1,990
Cash and cash equivalents at beginning of period	10,896	782
Cash and cash equivalents at end of period	15,494	2,772
Other non-cash investing activity:
Assets acquired by assuming related liabilities	$ 230	$ 114