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Commitments And Contingencies (Additional Information) (Details) (USD $)
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3 Months Ended | 39 Months Ended | 3 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Oct. 27, 2012
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Jul. 28, 2012
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Oct. 27, 2012
Investor [Member]
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Jul. 28, 2012
Investor [Member]
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Oct. 27, 2012
Acquisition [Member]
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Oct. 29, 2011
Acquisition [Member]
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Jan. 26, 2013
Insieme Networks Inc [Member]
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Oct. 27, 2012
Insieme Networks Inc [Member]
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Oct. 27, 2012
VCE [Member]
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Oct. 29, 2011
VCE [Member]
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Oct. 27, 2012
VCE [Member]
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Oct. 27, 2012
Minimum [Member]
D
Y
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Oct. 27, 2012
Maximum [Member]
Y
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Oct. 27, 2012
Maximum [Member]
Insieme Networks Inc [Member]
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Oct. 27, 2012
November 2012 Amendment [Member]
Maximum [Member]
Insieme Networks Inc [Member]
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| Site Contingency [Line Items] | |||||||||||||||
| Term of operating leases, in years | 1 | ||||||||||||||
| Total purchase commitments for inventory | $ 3,725,000,000 | $ 3,869,000,000 | |||||||||||||
| Liability for unconditional purchase agreements | 171,000,000 | 193,000,000 | |||||||||||||
| Compensation expense connection with the business combinations and asset purchases | 12,000,000 | 14,000,000 | |||||||||||||
| Future compensation expense & contingent consideration | 817,000,000 | 750,000,000 | 863,000,000 | ||||||||||||
| Funding commitments | 124,000,000 | 120,000,000 | |||||||||||||
| Cumulative investment in entity | 397,000,000 | 397,000,000 | |||||||||||||
| Percentage of outstanding equity owned in entity | 89.00% | 86.00% | 35.00% | 35.00% | |||||||||||
| Payments to Acquire Additional Interest in Subsidiaries | 35,000,000 | ||||||||||||||
| Percentage of VCE's losses | 36.80% | 36.80% | |||||||||||||
| Income (Loss) from Equity Method Investments | 42,000,000 | 31,000,000 | 281,000,000 | ||||||||||||
| VCE-Carrying Value | 116,000,000 | 116,000,000 | |||||||||||||
| Variable Interest Entity, Financial or Other Support, Amount | 100,000,000 | ||||||||||||||
| Warranty Time Period | 90 | ||||||||||||||
| Warranty Period For Products | 5 | ||||||||||||||
| Brazilian authority claim of import tax evasion by importer, tax portion | 427,000,000 | ||||||||||||||
| 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 | ||||||||||||||