Fair Value (Tables)

12 Months Ended

Jul. 28, 2018

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

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

	JULY 28, 2018						JULY 29, 2017
	FAIR VALUE MEASUREMENTS						FAIR VALUE MEASUREMENTS
	Level 1		Level 2		Total Balance		Level 1		Level 2		Total Balance
Assets:
Cash equivalents:
Money market funds	$	6,890	$	—	$	6,890	$	9,567	$	—	$	9,567
U.S. government securities	—		—		—		—		139		139
Commercial paper	—		—		—		—		160		160
Certificates of deposit	—		—		—		—		25		25
Available-for-sale investments:
U.S. government securities	—		7,275		7,275		—		19,823		19,823
U.S. government agency securities	—		727		727		—		2,052		2,052
Non-U.S. government and agency securities	—		208		208		—		388		388
Corporate debt securities	—		27,364		27,364		—		31,735		31,735
U.S. agency mortgage-backed securities	—		1,435		1,435		—		2,023		2,023
Commercial paper	—		—		—		—		996		996
Certificates of deposit	—		—		—		—		60		60
Publicly traded equity securities	605		—		605		1,707		—		1,707
Derivative assets	—		2		2		—		149		149
Total	$	7,495	$	37,011	$	44,506	$	11,274	$	57,550	$	68,824
Liabilities:
Derivative liabilities	$	—	$	74	$	74	$	—	$	4	$	4
Total	$	—	$	74	$	74	$	—	$	4	$	4

Fair Value on A Nonrecurring Basis

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 YEARS ENDED
	July 28, 2018			July 29, 2017			July 30, 2016
Investments in privately held companies (impaired)	$	(56	)	$	(175	)	$	(57	)
Purchased intangible assets (impaired)	(1		)	(47		)	(74		)
Property held for sale - land and buildings	20			(30		)	—
Gains (losses) on assets no longer held at end of fiscal year	(6		)	(2		)	(10		)
Total gains (losses) for nonrecurring measurements	$	(43	)	$	(254	)	$	(141	)