|
Derivative Instruments (Effect Of Derivative Instruments Designated As Cash Flow Hedges And Net Investment Hedging Instruments On Other Comprehensive And Consolidated Statements Of Operations Summary) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Oct. 26, 2013
|
Oct. 27, 2012
|
|
|
Cash Flow Hedging [Member]
|
||
| Derivative [Line Items] | ||
| Gains (losses) recognized in OCI on derivatives (effective portion) | $ 38 | $ 66 |
| Gains (losses) reclassified from AOCI into income (effective portion) | 9 | (5) |
|
Cash Flow Hedging [Member] | Foreign Currency Derivatives-Cash Flow Hedges [Member]
|
||
| Derivative [Line Items] | ||
| Gains (losses) recognized in OCI on derivatives (effective portion) | 38 | 66 |
|
Cash Flow Hedging [Member] | Foreign Currency Derivatives-Cash Flow Hedges [Member] | Operating Expenses [Member]
|
||
| Derivative [Line Items] | ||
| Gains (losses) reclassified from AOCI into income (effective portion) | 7 | (4) |
|
Cash Flow Hedging [Member] | Foreign Currency Derivatives-Cash Flow Hedges [Member] | Cost Of Sales-Service [Member]
|
||
| Derivative [Line Items] | ||
| Gains (losses) reclassified from AOCI into income (effective portion) | 2 | (1) |
|
Net Investment Hedging [Member]
|
||
| Derivative [Line Items] | ||
| Gains (losses) recognized in OCI on derivatives (effective portion) | (19) | (24) |
|
Net Investment Hedging [Member] | Other income (loss), net [Member]
|
||
| Derivative [Line Items] | ||
| Gains (losses) reclassified from AOCI into income (effective portion) | $ 0 | $ 0 |