|
Investments (Maturities Of Fixed Income Securities) (Detail) (USD $)
In Millions, unless otherwise specified |
Jul. 28, 2012
|
|---|---|
|
Less Than 1 Year
|
|
| Schedule of Investments [Line Items] | |
| Amortized Cost | $ 16,257 |
| Fair Value | 16,274 |
|
Due In 1 To 2 Years
|
|
| Schedule of Investments [Line Items] | |
| Amortized Cost | 12,277 |
| Fair Value | 12,323 |
|
Due In 2 To 5 Years
|
|
| Schedule of Investments [Line Items] | |
| Amortized Cost | 8,549 |
| Fair Value | 8,623 |
|
Due After 5 Years
|
|
| Schedule of Investments [Line Items] | |
| Amortized Cost | 73 |
| Fair Value | 77 |
|
Fixed Income Securities
|
|
| Schedule of Investments [Line Items] | |
| Amortized Cost | 37,156 |
| Fair Value | $ 37,297 |