|
Commitments and Contingencies (Schedule of Financing Guarantees Outstanding) (Details) (USD $)
In Millions, unless otherwise specified |
Apr. 25, 2015
|
Jul. 26, 2014
|
|---|---|---|
| Loss Contingencies [Line Items] | ||
| Maximum potential future payments relating to financing guarantees: | $ 437 | $ 465 |
| Deferred revenue associated with financing guarantees: | (235) | (293) |
| Maximum potential future payments relating to financing guarantees, net of associated deferred revenue | 202 | 172 |
| Channel partner | ||
| Loss Contingencies [Line Items] | ||
| Maximum potential future payments relating to financing guarantees: | 299 | 263 |
| Deferred revenue associated with financing guarantees: | (122) | (127) |
| End user | ||
| Loss Contingencies [Line Items] | ||
| Maximum potential future payments relating to financing guarantees: | 138 | 202 |
| Deferred revenue associated with financing guarantees: | $ (113) | $ (166) |