CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jul. 28, 2019	Jul. 29, 2018
Cash flows from operating activities:
Net income	$ 947	$ 2,345
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	401	262
Depreciation and amortization	183	116
Deferred income taxes	(27)	113
Other	1	(22)
Changes in operating assets and liabilities:
Accounts receivable	(137)	(386)
Inventories	378	(295)
Prepaid expenses and other assets	36	(44)
Accounts payable	(45)	172
Accrued and other current liabilities	(79)	96
Other long-term liabilities	(2)	1
Net cash provided by operating activities	1,656	2,358
Cash flows from investing activities:
Proceeds from maturities of marketable securities	3,592	2,957
Proceeds from sales of marketable securities	3,152	77
Purchases of marketable securities	(1,461)	(7,136)
Purchases of property and equipment and intangible assets	(241)	(247)
Investment in non-affiliates	(2)	(7)
Net cash provided by (used in) investing activities	5,040	(4,356)
Cash flows from financing activities:
Proceeds related to employee stock plans	83	69
Payments related to tax on restricted stock units	(261)	(515)
Dividends paid	(195)	(182)
Payments related to repurchases of common stock	0	(655)
Repayment of Convertible Notes	0	(2)
Other	0	(1)
Net cash used in financing activities	(373)	(1,286)
Change in cash and cash equivalents	6,323	(3,284)
Cash and cash equivalents at beginning of period	782	4,002
Cash and cash equivalents at end of period	7,105	718
Other non-cash investing activity:
Assets acquired by assuming related liabilities	$ 80	$ 52