|
Derivative Instruments (Derivatives Recorded At Fair Value) (Details) (USD $)
In Millions, unless otherwise specified |
Oct. 27, 2012
|
Jul. 28, 2012
|
|---|---|---|
| Derivative [Line Items] | ||
| Derivative assets | $ 274 | $ 264 |
| Derivative liabilities | 55 | 42 |
|
Designated As Hedging Instrument [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 263 | 247 |
| Derivative liabilities | 23 | 30 |
|
Derivatives Not Designated As Hedging Instruments [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 11 | 17 |
| Derivative liabilities | 32 | 12 |
|
Foreign Exchange Contract [Member] | Designated As Hedging Instrument [Member] | Other Current Assets [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 47 | 24 |
|
Foreign Exchange Contract [Member] | Designated As Hedging Instrument [Member] | Other Current Liabilities [Member]
|
||
| Derivative [Line Items] | ||
| Derivative liabilities | 8 | 26 |
|
Foreign Exchange Contract [Member] | Derivatives Not Designated As Hedging Instruments [Member] | Other Current Assets [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 10 | 16 |
|
Foreign Exchange Contract [Member] | Derivatives Not Designated As Hedging Instruments [Member] | Other Current Liabilities [Member]
|
||
| Derivative [Line Items] | ||
| Derivative liabilities | 32 | 12 |
|
Equity Derivatives [Member] | Designated As Hedging Instrument [Member] | Other Current Assets [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 11 | |
|
Equity Derivatives [Member] | Designated As Hedging Instrument [Member] | Other Current Liabilities [Member]
|
||
| Derivative [Line Items] | ||
| Derivative liabilities | 15 | 4 |
|
Equity Derivatives [Member] | Derivatives Not Designated As Hedging Instruments [Member] | Other Assets [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 1 | 1 |
|
Interest Rate Derivatives [Member] | Designated As Hedging Instrument [Member] | Other Assets [Member]
|
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| Derivative [Line Items] | ||
| Derivative assets | $ 205 | $ 223 |