Fair Value (Tables)

6 Months Ended

Jan. 26, 2019

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 26, 2019 FAIR VALUE MEASUREMENTS						JULY 28, 2018 FAIR VALUE MEASUREMENTS
	Level 1		Level 2		Total Balance		Level 1		Level 2		Total Balance
Assets:
Cash equivalents:
Money market funds	$	7,888	$	—	$	7,888	$	6,890	$	—	$	6,890
Commercial paper	—		99		99		—		—		—
Certificates of deposit	—		25		25		—		—		—
Available-for-sale debt investments:
U.S. government securities	—		3,472		3,472		—		7,275		7,275
U.S. government agency securities	—		354		354		—		727		727
Non-U.S. government and agency securities	—		115		115		—		208		208
Corporate debt securities	—		24,753		24,753		—		27,364		27,364
U.S. agency mortgage-backed securities	—		1,434		1,434		—		1,435		1,435
Commercial paper	—		243		243		—		—		—
Certificates of deposit	—		115		115		—		—		—
Equity investments:
Marketable equity securities	62		—		62		605		—		605
Derivative assets	—		23		23		—		2		2
Total	$	7,950	$	30,633	$	38,583	$	7,495	$	37,011	$	44,506
Liabilities:
Derivative liabilities	$	—	$	40	$	40	$	—	$	74	$	74
Total	$	—	$	40	$	40	$	—	$	74	$	74

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 26, 2019		January 27, 2018			January 26, 2019		January 27, 2018
Non-marketable equity securities	$	12	$	(18	)	$	6	$	(39	)
Property held for sale—land and buildings	—		20			—		20
Total gains (losses) for nonrecurring measurements	$	12	$	2		$	6	$	(19	)