CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jul. 29, 2018	Jul. 30, 2017
Cash flows from operating activities:
Net income	$ 2,345	$ 1,091
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	262	158
Depreciation and amortization	116	96
Deferred income taxes	113	115
Loss on early debt conversions	0	17
Other	(22)	11
Changes in operating assets and liabilities:
Accounts receivable	(386)	(387)
Inventories	(295)	(61)
Prepaid expenses and other assets	(44)	(15)
Accounts payable	172	(63)
Accrued and other current liabilities	96	9
Other long-term liabilities	1	16
Net cash provided by operating activities	2,358	987
Cash flows from investing activities:
Proceeds from maturities of marketable securities	2,957	450
Proceeds from sales of marketable securities	77	726
Purchases of marketable securities	(7,136)	(36)
Purchases of property and equipment and intangible assets	(247)	(108)
Investment in non-affiliates	(7)	(16)
Net cash provided by (used in) investing activities	(4,356)	1,016
Cash flows from financing activities:
Payments related to repurchases of common stock	(655)	(758)
Repayment of Convertible Notes	(2)	(741)
Dividends paid	(182)	(166)
Proceeds related to employee stock plans	69	76
Payments related to tax on restricted stock units	(515)	(190)
Other	(1)	(2)
Net cash used in financing activities	(1,286)	(1,781)
Change in cash and cash equivalents	(3,284)	222
Cash and cash equivalents at beginning of period	4,002	1,766
Cash and cash equivalents at end of period	718	1,988
Other non-cash investing activity:
Assets acquired by assuming related liabilities	$ 52	$ 32