|
Goodwill and Purchased Intangible Assets (Schedule Of Intangible Assets Acquired Through Business Combinations) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jul. 28, 2012
|
Jul. 30, 2011
|
Jul. 31, 2010
|
Jul. 30, 2011
In-Process Research & Development
|
Jul. 30, 2011
Technology
Year
|
Jul. 28, 2012
Technology
|
Jul. 30, 2011
Customer Relationships
Year
|
Jul. 28, 2012
Customer Relationships
|
Jul. 30, 2011
Other
Year
|
Jul. 28, 2012
Lightwire, Inc.
|
Jul. 28, 2012
Lightwire, Inc.
Technology
Year
|
Jul. 28, 2012
All Others
|
Jul. 28, 2012
All Others
Technology
Year
|
Jul. 28, 2012
All Others
Customer Relationships
Year
|
|
| Schedule of Finite Lived and Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] | ||||||||||||||
| Weighted-Average Useful Life (in Years) | 4.8 | 6.4 | 2.5 | 5.0 | 3.5 | 3.0 | ||||||||
| Amount, acquired finite lives | $ 92 | $ 199 | $ 16 | $ 1 | $ 1 | $ 97 | $ 102 | $ 1 | ||||||
| Amount, acquired indefinite lives | 5 | |||||||||||||
| Amount, acquired indefinite and finite lives intangible assets | $ 200 | $ 114 | $ 2,380 | $ 97 | $ 103 | |||||||||