v2.4.0.8

Fair Value (Fair Value On A Nonrecurring Basis) (Detail) (Fair Value, Measurements, Nonrecurring, Fair Value, Inputs, Level 3 [Member], Investments In Privately Held Companies, USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Oct. 26, 2013 | Oct. 27, 2012
Gains or Losses Included In Other Income (Loss), Net |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Gains (Losses) for the Period | $ (1) | $ (10)
Net Carrying Value |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Investment in privately held companies | $ 0 | $ 42

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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 + Details
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- Definition Amount of other expense (income) that is infrequent in occurrence or unusual in nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15122-107781 + Details
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