|
Derivative Instruments (Derivatives Recorded At Fair Value) (Details) (USD $)
In Millions, unless otherwise specified |
Oct. 26, 2013
|
Jul. 27, 2013
|
|---|---|---|
| Derivative [Line Items] | ||
| Derivative assets | $ 224 | $ 182 |
| Derivative liabilities | 145 | 171 |
|
Designated as Hedging Instrument [Member]
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| Derivative [Line Items] | ||
| Derivative assets | 221 | 180 |
| Derivative liabilities | 132 | 164 |
|
Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Current Assets [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 57 | 33 |
|
Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Other Current Liabilities [Member]
|
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| Derivative [Line Items] | ||
| Derivative liabilities | 10 | 7 |
|
Designated as Hedging Instrument [Member] | Interest Rate Derivatives [Member] | Other Noncurrent Assets [Member]
|
||
| Derivative [Line Items] | ||
| Derivative assets | 164 | 147 |
|
Designated as Hedging Instrument [Member] | Interest Rate Derivatives [Member] | Other Noncurrent Liabilities [Member]
|
||
| Derivative [Line Items] | ||
| Derivative liabilities | 0 | 2 |
|
Designated as Hedging Instrument [Member] | Equity Derivatives [Member] | Other Current Assets [Member]
|
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| Derivative [Line Items] | ||
| Derivative assets | 0 | 0 |
|
Designated as Hedging Instrument [Member] | Equity Derivatives [Member] | Other Current Liabilities [Member]
|
||
| Derivative [Line Items] | ||
| Derivative liabilities | 122 | 155 |
|
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract | Other Current Assets [Member]
|
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| Derivative [Line Items] | ||
| Derivative assets | 3 | 2 |
|
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract | Other Current Liabilities [Member]
|
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| Derivative [Line Items] | ||
| Derivative liabilities | $ 13 | $ 7 |