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Financing Receivables And Guarantees (Schedule Of Financing Receivables Categorized By Internal Credit Risk Rating) (Detail) (USD $)
In Millions, unless otherwise specified
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Oct. 26, 2013
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Jul. 27, 2013
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Oct. 27, 2012
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
$ 8,375 |
$ 8,292 |
$ 7,795 |
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Rating One To Four [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
4,468 |
4,399 |
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Rating Five To Six [Member]
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|
|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
3,385 |
3,400 |
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Rating Seven And Higher [Member]
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|
|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
270 |
242 |
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Total Internal Credit Risk Rating [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
8,123 |
8,041 |
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Residual Value [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
252 |
251 |
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Lease Receivables
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
3,549 |
3,507 |
3,340 |
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Lease Receivables | Rating One To Four [Member]
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
1,695 |
1,681 |
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Lease Receivables | Rating Five To Six [Member]
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|
|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
1,498 |
1,482 |
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Lease Receivables | Rating Seven And Higher [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
104 |
93 |
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Lease Receivables | Total Internal Credit Risk Rating [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
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| Gross Financing Receivable, Net of Unearned |
3,297 |
3,256 |
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Lease Receivables | Residual Value [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
252 |
251 |
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Loan Receivables
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|
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| Financing Receivables And Guarantees [Line Items] |
|
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| Gross Financing Receivable, Net of Unearned |
1,808 |
1,649 |
1,816 |
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Loan Receivables | Rating One To Four [Member]
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
981 |
842 |
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Loan Receivables | Rating Five To Six [Member]
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
777 |
777 |
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Loan Receivables | Rating Seven And Higher [Member]
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
50 |
30 |
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Loan Receivables | Total Internal Credit Risk Rating [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
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| Gross Financing Receivable, Net of Unearned |
1,808 |
1,649 |
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Financed Service Contracts And Other
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
3,018 |
3,136 |
2,639 |
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Financed Service Contracts And Other | Rating One To Four [Member]
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|
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| Financing Receivables And Guarantees [Line Items] |
|
|
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| Gross Financing Receivable, Net of Unearned |
1,792 |
1,876 |
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Financed Service Contracts And Other | Rating Five To Six [Member]
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
1,110 |
1,141 |
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Financed Service Contracts And Other | Rating Seven And Higher [Member]
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
116 |
119 |
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Financed Service Contracts And Other | Total Internal Credit Risk Rating [Member]
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| Financing Receivables And Guarantees [Line Items] |
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| Gross Financing Receivable, Net of Unearned |
$ 3,018 |
$ 3,136 |
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