Fair Value (Tables)

9 Months Ended

Apr. 27, 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):

	APRIL 27, 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	$	8,283	$	—	$	8,283	$	6,890	$	—	$	6,890
Available-for-sale debt investments:
U.S. government securities	—		1,452		1,452		—		7,275		7,275
U.S. government agency securities	—		263		263		—		727		727
Non-U.S. government and agency securities	—		—		—		—		208		208
Corporate debt securities	—		21,232		21,232		—		27,364		27,364
U.S. agency mortgage-backed securities	—		1,440		1,440		—		1,435		1,435
Equity investments:
Marketable equity securities	5		—		5		605		—		605
Derivative assets	—		36		36		—		2		2
Total	$	8,288	$	24,423	$	32,711	$	7,495	$	37,011	$	44,506
Liabilities:
Derivative liabilities	$	—	$	20	$	20	$	—	$	74	$	74
Total	$	—	$	20	$	20	$	—	$	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 NINE MONTHS ENDED
	April 27, 2019			April 28, 2018			April 27, 2019		April 28, 2018
Non-marketable equity securities and equity method investments	$	(3	)	$	(17	)	$	3	$	(56	)
Purchased intangible assets (impaired)	—			(1		)	—		(1		)
Property held for sale—land and buildings	—			—			—		20
Total gains (losses) for nonrecurring measurements	$	(3	)	$	(18	)	$	3	$	(37	)