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Employee Benefit Plans (Tables)
 6 Months Ended
Jan. 24, 2015
Compensation and Retirement Disclosure [Abstract]  
Summary Of Share-Based Compensation Expense
Share-based compensation expense consists primarily of expenses for stock options, stock purchase rights, restricted stock, and restricted stock units granted to employees. The following table summarizes share-based compensation expense (in millions):
 
Three Months Ended
 
Six Months Ended
 
January 24,
2015
 
January 25,
2014
 
January 24,
2015
 
January 25,
2014
Cost of sales—product
$
11

 
$
12

 
$
22

 
$
22

Cost of sales—service
34

 
40

 
71

 
73

Share-based compensation expense in cost of sales
45

 
52

 
93

 
95

Research and development
105

 
108

 
224

 
200

Sales and marketing
114

 
141

 
261

 
264

General and administrative
42

 
47

 
101

 
101

Restructuring and other charges
2

 
(1
)
 
(2
)
 
(4
)
Share-based compensation expense in operating expenses
263

 
295

 
584

 
561

Total share-based compensation expense
$
308

 
$
347

 
$
677

 
$
656

Income tax benefit for share-based compensation
$
85

 
$
82

 
$
179

 
$
160
Summary Of Share-Based Awards Available For Grant
A summary of share-based awards available for grant is as follows (in millions):
 
Share-Based
Awards Available
for Grant
BALANCE AT JULY 27, 2013
228

Restricted stock, stock units, and other share-based awards granted
(98
)
Share-based awards canceled/forfeited/expired
36

Additional shares reserved
135

Shares withheld for taxes and not issued
6

Other
3

BALANCE AT JULY 26, 2014
310

Restricted stock, stock units, and other share-based awards granted
(28
)
Share-based awards canceled/forfeited/expired
27

Shares withheld for taxes and not issued
21

Other
(2
)
BALANCE AT JANUARY 24, 2015
328
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 restricted stock units, is as follows (in millions, except per-share amounts):
 
Restricted Stock/
Stock Units
 
Weighted-Average
Grant Date Fair
Value per Share
 
Aggregated Fair
Market Value
UNVESTED BALANCE AT JULY 27, 2013
143

 
$
18.80

 
 
Granted and assumed
72

 
20.85

 
 
Vested
(53
)
 
19.55

 
$
1,229

Canceled/forfeited
(13
)
 
18.61

 
 
UNVESTED BALANCE AT JULY 26, 2014
149

 
19.54

 
 
Granted and assumed
18

 
23.47

 
 
Vested
(41
)
 
19.47

 
$
1,053

Canceled/forfeited
(11
)
 
19.70

 
 
UNVESTED BALANCE AT JANUARY 24, 2015
115

 
$
20.18

 
 
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 27, 2013
276

 
$
24.44

Assumed from acquisitions
6

 
3.60

Exercised
(78
)
 
18.30

Canceled/forfeited/expired
(17
)
 
27.53

BALANCE AT JULY 26, 2014
187

 
26.03

Assumed from acquisitions
1

 
2.72

Exercised
(45
)
 
20.49

Canceled/forfeited/expired
(10
)
 
29.48

BALANCE AT JANUARY 24, 2015
133

 
$
27.45
Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options

The following table summarizes significant ranges of outstanding and exercisable stock options as of January 24, 2015 (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 – 15.00
 
5

 
5.4
 
$
4.17

 
$
135

 
3

 
$
5.66

 
$
69

15.01 – 18.00
 
1

 
2.0
 
16.91

 
3

 
1

 
16.91

 
3

18.01 – 20.00
 
1

 
0.3
 
19.69

 
9

 
1

 
19.69

 
9

20.01 – 25.00
 
37

 
0.8
 
22.90

 
198

 
37

 
22.90

 
198

25.01 – 30.00
 
20

 
1.5
 
26.72

 
32

 
20

 
26.72

 
32

30.01 – 35.00
 
69

 
1.5
 
32.16

 
—

 
69

 
32.16

 
—

Total
 
133

 
1.5
 
$
27.45

 
$
377

 
131

 
$
27.94

 
$
311
Schedule of Assumptions Used
The assumptions for the valuation of time-based RSUs and PRSUs are summarized as follows:
 
RESTRICTED STOCK UNITS
 
PERFORMANCE RESTRICTED STOCK UNITS
Three Months Ended
January 24, 2015
 
January 25, 2014
 
January 24, 2015
 
January 25, 2014
Number of shares granted (in millions)
1

 
37

 
1

 
—

Grant date fair value per share
$
25.07

 
$
19.90

 
$
25.39

 
N/A

Weighted-average assumptions/inputs:
 
 
 
 
 
 
 
   Expected dividend yield
2.8
%
 
3.2
%
 
2.8
%
 
N/A

   Range of risk-free interest rates
0.0% – 1.6%

 
0.1% – 1.4%

 
0.0% – 1.6%

 
N/A

   Range of expected volatilities for index
N/A

 
N/A

 
14.4% – 63.7%

 
N/A


RESTRICTED STOCK UNITS
 
PERFORMANCE RESTRICTED STOCK UNITS
Six Months Ended
January 24, 2015

January 25, 2014

January 24, 2015
 
January 25, 2014
Number of shares granted (in millions)
11


47


7

 
4

Grant date fair value per share
$
23.34


$
20.57


$
23.70

 
$
22.70

Weighted-average assumptions/inputs:
 
 
 
 
 
 
 
   Expected dividend yield
3.0
%

3.1
%

3.0
%
 
2.3
%
   Range of risk-free interest rates
0.0% – 1.8%


0.0% – 1.4%


0.0% – 1.8%

 
0.0% – 1.4%

   Range of expected volatilities for index
N/A

 
N/A

 
14.4% – 70.0%

 
17.4% – 70.5%