Brazilian authority claim of import tax evasion by importer, interest portion

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Brazilian authority claim of import tax evasion by importer penalties portion

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Brazilian authority claim of import tax evasion by importer, tax portion

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Commitments And Contingencies (Additional Information) (Details) (USD $)					3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		42 Months Ended	6 Months Ended
	Jan. 26, 2013	Jul. 28, 2012	Jan. 26, 2013 Investor [Member]	Jul. 28, 2012 Investor [Member]	Jan. 26, 2013 Acquisition [Member]	Jan. 28, 2012 Acquisition [Member]	Jan. 26, 2013 Acquisition [Member]	Jan. 28, 2012 Acquisition [Member]	Jan. 26, 2013 Insieme Networks Inc [Member]	Jan. 26, 2013 VCE [Member]	Jan. 28, 2012 VCE [Member]	Jan. 26, 2013 VCE [Member]	Jan. 28, 2012 VCE [Member]	Jan. 26, 2013 VCE [Member]	Jan. 26, 2013 Minimum [Member] D Y	Jan. 26, 2013 Maximum [Member] Y	Jan. 26, 2013 Maximum [Member] Insieme Networks Inc [Member]	Jan. 26, 2013 November 2012 Amendment [Member] Insieme Networks Inc [Member]	Jan. 26, 2013 November 2012 Amendment [Member] Maximum [Member] Insieme Networks Inc [Member]
Site Contingency [Line Items]
Term of operating leases, in years															1
Unrecorded Unconditional Purchase Obligation	$ 3,824,000,000	$ 3,869,000,000
Other Commitment	169,000,000	193,000,000
Compensation expense connection with the business combinations and asset purchases					23,000,000	14,000,000	35,000,000	28,000,000
Future compensation expense & contingent consideration							1,100,000,000										750,000,000		863,000,000
Funding commitments			133,000,000	120,000,000
Cumulative investment in entity										457,000,000		457,000,000		457,000,000
Percentage of outstanding equity owned in entity										35.00%		35.00%		35.00%
Payments to Acquire Additional Interest in Subsidiaries																		35,000,000
Percentage of VCE's losses												36.80%
Income (Loss) from Equity Method Investments										44,000,000	55,000,000		86,000,000	325,000,000
VCE-Carrying Value										132,000,000		132,000,000		132,000,000
Variable Interest Entity, Financial or Other Support, Amount									100,000,000
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage									87.00%
Warranty Time Period															90
Warranty Period For Products																5
Brazilian authority claim of import tax evasion by importer, tax portion	426,000,000
Brazilian authority claim of import tax evasion by importer, interest portion	1,100,000,000
Brazilian authority claim of import tax evasion by importer, penalties portion	$ 1,900,000,000