Fair Value of Financial Assets and Liabilities (Tables)

9 Months Ended

Oct. 28, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

		Fair Value at
	Pricing Category	October 28, 2018		January 28, 2018
		(In millions)
Assets
Cash equivalents and marketable securities:
Corporate debt securities	Level 2	$	2,727	$	1,295
Debt securities of United States government agencies	Level 2	$	2,135	$	815
Debt securities issued by the United States Treasury	Level 2	$	1,542	$	573
Money market funds	Level 1	$	602	$	3,789
Foreign government bonds	Level 2	$	191	$	41
Asset-backed securities	Level 2	$	176	$	252
Mortgage-backed securities issued by United States government-sponsored enterprises	Level 2	$	99	$	130
Liabilities
Current liability:
1.00% Convertible Senior Notes (1)	Level 2	$	43	$	189
Other noncurrent liabilities:
2.20% Notes Due 2021 (1)	Level 2	$	971	$	982
3.20% Notes Due 2026 (1)	Level 2	$	943	$	986

(1) These liabilities are carried on our Consolidated Balance Sheets at their original issuance value, net of unamortized debt discount and issuance costs, and are not marked to fair value each period. Refer to Note 12 of these Notes to Condensed Consolidated Financial Statements for additional information.