v2.4.1.9

Goodwill and Purchased Intangible Assets (Schedule Of Purchased Intangible Assets With Finite And Indefinite Lives) (Details) (USD $) In Millions, unless otherwise specified | Apr. 25, 2015 | Jul. 26, 2014
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Business Acquisition [Line Items] |  |
Gross | $ 5,216 us-gaap_FiniteLivedIntangibleAssetsGross | $ 5,857 us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated Amortization | (2,679)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (2,709)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Total purchased intangible assets with finite lives, net | 2,537 us-gaap_FiniteLivedIntangibleAssetsNet | 3,148 us-gaap_FiniteLivedIntangibleAssetsNet
In-process research and development, with indefinite lives | 89 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill | 132 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Total- Gross | 5,305 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 5,989 us-gaap_IntangibleAssetsGrossExcludingGoodwill
Total, net | 2,626 us-gaap_IntangibleAssetsNetExcludingGoodwill | 3,280 us-gaap_IntangibleAssetsNetExcludingGoodwill
TECHNOLOGY |  |
Business Acquisition [Line Items] |  |
Gross | 3,456 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | 4,100 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember
Accumulated Amortization | (1,742)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | (1,976)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember
Total purchased intangible assets with finite lives, net | 1,714 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | 2,124 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember
CUSTOMER RELATIONSHIPS |  |
Business Acquisition [Line Items] |  |
Gross | 1,709 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 1,706 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Accumulated Amortization | (915)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (720)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Total purchased intangible assets with finite lives, net | 794 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 986 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
OTHER |  |
Business Acquisition [Line Items] |  |
Gross | 51 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 51 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
Accumulated Amortization | (22)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | (13)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
Total purchased intangible assets with finite lives, net | $ 29 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | $ 38 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember

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