Fair Value (Tables)

6 Months Ended

Jan. 25, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis were as follows (in millions):

	JANUARY 25, 2020 FAIR VALUE MEASUREMENTS						JULY 27, 2019 FAIR VALUE MEASUREMENTS
	Level 1		Level 2		Total Balance		Level 1		Level 2		Total Balance
Assets:
Cash equivalents:
Money market funds	$	6,556	$	—	$	6,556	$	10,083	$	—	$	10,083
Commercial paper	—		216		216		—		—		—
Certificates of deposit	—		18		18		—		—		—
Available-for-sale debt investments:
U.S. government securities	—		2,231		2,231		—		808		808
U.S. government agency securities	—		20		20		—		169		169
Corporate debt securities	—		13,597		13,597		—		19,262		19,262
U.S. agency mortgage-backed securities	—		1,623		1,623		—		1,421		1,421
Commercial paper	—		1,052		1,052		—		—		—
Certificates of deposit	—		64		64		—		—		—
Equity investments:
Marketable equity securities	—		—		—		3		—		3
Derivative assets	—		103		103		—		89		89
Total	$	6,556	$	18,924	$	25,480	$	10,086	$	21,749	$	31,835
Liabilities:
Derivative liabilities	$	—	$	15	$	15	$	—	$	15	$	15
Total	$	—	$	15	$	15	$	—	$	15	$	15

Fair Value Measurements, Nonrecurring

The following table presents gains and losses on assets that were measured at fair value on a nonrecurring basis (in millions):

	TOTAL GAINS (LOSSES) FOR THE THREE MONTHS ENDED					TOTAL GAINS (LOSSES) FOR THE SIX MONTHS ENDED
	January 25, 2020			January 26, 2019		January 25, 2020			January 26, 2019
Non-marketable equity securities and equity method investments	$	(11	)	$	12	$	(32	)	$	6
Purchased intangible assets (impaired)	(3		)	—		(3		)	—
Total gains (losses) for nonrecurring measurements	$	(14	)	$	12	$	(35	)	$	6