Employee Benefit Plans (Tables)

12 Months Ended

Jul. 28, 2018

Retirement Benefits [Abstract]

Summary of Share-Based Compensation Expense

Share-based compensation expense consists primarily of expenses for stock options, stock purchase rights, restricted stock, and RSUs granted to employees. The following table summarizes share-based compensation expense (in millions):

Years Ended	July 28, 2018		July 29, 2017		July 30, 2016
Cost of sales—product	$	94	$	85	$	70
Cost of sales—service	133		134		142
Share-based compensation expense in cost of sales	227		219		212
Research and development	538		529		470
Sales and marketing	555		542		545
General and administrative	246		236		205
Restructuring and other charges	33		3		26
Share-based compensation expense in operating expenses	1,372		1,310		1,246
Total share-based compensation expense	$	1,599	$	1,529	$	1,458
Income tax benefit for share-based compensation	$	558	$	451	$	429

Summary of Share-Based Awards Available for Grant

A summary of share-based awards available for grant is as follows (in millions):

Years Ended	July 28, 2018		July 29, 2017		July 30, 2016
Balance at beginning of fiscal year	272		242		276
Restricted stock, stock units, and other share-based awards granted	(70	)	(76	)	(96	)
Share-based awards canceled/forfeited/expired	18		78		30
Shares withheld for taxes and not issued	25		28		30
Other	—		—		2
Balance at end of fiscal year	245		272		242

Summary of Restricted Stock and Stock Unit Activity

A summary of the restricted stock and stock unit activity, which includes time-based and performance-based or market-based RSUs, is as follows (in millions, except per-share amounts):

	Restricted Stock/ Stock Units		Weighted-Average Grant Date Fair Value per Share		Aggregate Fair  Value
UNVESTED BALANCE AT JULY 25, 2015	143		$	22.08
Granted	62		25.90
Assumed from acquisitions	6		24.58
Vested	(54	)	20.68		$	1,428
Canceled/forfeited/other	(12	)	22.91
UNVESTED BALANCE AT JULY 30, 2016	145		24.26
Granted	50		27.89
Assumed from acquisitions	15		32.21
Vested	(54	)	23.14		$	1,701
Canceled/forfeited/other	(15	)	23.56
UNVESTED BALANCE AT JULY 29, 2017	141		26.94
Granted	46		35.62
Assumed from acquisitions	1		28.26
Vested	(53	)	26.02		$	1,909
Canceled/forfeited/other	(16	)	28.37
UNVESTED BALANCE AT JULY 28, 2018	119		$	30.56

Summary of Stock Option Activity

A summary of the stock option activity is as follows (in millions, except per-share amounts):

	STOCK OPTIONS OUTSTANDING
	Number Outstanding		Weighted-Average Exercise Price per Share
BALANCE AT JULY 25, 2015	103		$	28.68
Assumed from acquisitions	18		5.17
Exercised	(32	)	19.22
Canceled/forfeited/expired	(16	)	30.01
BALANCE AT JULY 30, 2016	73		26.78
Assumed from acquisitions	8		4.47
Exercised	(14	)	12.11
Canceled/forfeited/expired	(55	)	31.83
BALANCE AT JULY 29, 2017	12		6.15
Assumed from acquisitions	3		8.20
Exercised	(8	)	5.77
Canceled/forfeited/expired	(1	)	8.75
BALANCE AT JULY 28, 2018	6		$	7.18

Summary of Significant Ranges of Outstanding and Exercisable Stock Options

The following table summarizes significant ranges of outstanding and exercisable stock options as of July 28, 2018 (in millions, except years and share prices):

	STOCK OPTIONS OUTSTANDING						STOCK OPTIONS EXERCISABLE
Range of Exercise Prices	Number Outstanding	Weighted- Average Remaining Contractual Life (in Years)	Weighted- Average Exercise Price per Share		Aggregate Intrinsic Value		Number Exercisable	Weighted- Average Exercise Price per Share		Aggregate Intrinsic Value
$   0.01 – 35.00	6	5.9	$	7.18	$	228	4	$	6.84	$	153

Schedule of Assumptions Used

The assumptions for the valuation of time-based RSUs and PRSUs are summarized as follows:

	RESTRICTED STOCK UNITS
Years Ended	July 28, 2018			July 29, 2017			July 30, 2016
Number of shares granted (in millions)	43			43			57
Grant date fair value per share	$	35.81		$	28.38		$	26.01
Weighted-average assumptions/inputs:
Expected dividend yield	3.2		%	3.5		%	3.2		%
Range of risk-free interest rates	0.0% – 2.7%			0.0% – 1.5%			0.0% – 1.2%

	PERFORMANCE BASED RESTRICTED STOCK UNITS
Years Ended	July 28, 2018			July 29, 2017			July 30, 2016
Number of shares granted (in millions)	3			7			5
Grant date fair value per share	$	32.69		$	28.94		$	24.70
Weighted-average assumptions/inputs:
Expected dividend yield	3.5		%	3.4		%	3.1		%
Range of risk-free interest rates	1.0% – 2.7%			0.1% – 1.5%			0.0% – 1.2%
Range of expected volatilities for index	12.5% - 82.8%			16.7% – 46.8%			15.3% – 54.3%

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

The assumptions for the valuation of employee stock purchase rights are summarized as follows:

	EMPLOYEE STOCK PURCHASE RIGHTS
Years Ended	July 28, 2018			July 29, 2017			July 30, 2016
Weighted-average assumptions:
Expected volatility	22.1		%	24.6		%	23.9		%
Risk-free interest rate	1.3		%	0.7		%	0.4		%
Expected dividend	3.1		%	3.2		%	3.1		%
Expected life (in years)	1.3			1.3			1.3
Weighted-average estimated grant date fair value per share	$	7.48		$	6.52		$	5.73