Assessed Value Of The ARS Call Option Upon Origination

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- Definition

Auction rate securities, at Fair Value

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- Definition

Available for Sale Securities Sold, Carrying Value

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Available for Sale Securities Sold, Par Value

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- Definition

Expiration date of the option.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

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- Definition

The amount of the liquidation value for auction market preferred securities.

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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- Definition

Before tax amount of the income statement impact of the reclassification adjustment for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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- Definition

The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

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- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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Cash and Cash Equivalents, Short-term Investments and Long-term Investments - Additional Information (Detail) (USD $)	6 Months Ended		12 Months Ended		12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jan. 29, 2011 ARS Call Option	Jul. 28, 2012 ARS Call Option	Jan. 29, 2011 ARS
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sale of available-for-sale securities	$ 20,592,000	$ 115,229,000			$ 177,500,000
Purchase of available-for-sale securities	570,000	166,443,000
Available-for-sale securities sold, carrying value					191,400,000
Realized loss on sale of investment securities					24,400,000
Loss on sale of available-for-sale securities previous included in OCI					10,900,000
Available-for-sale securities sold, par value					119,700,000
Expiration of right to repurchase securities and/or receive certain additional proceeds			Oct. 29, 2013
Assessed Value Of The ARS Call Option Upon Origination				400,000
Assessed Value Of The ARS Call Option Upon Liquidation				24,400,000
Fair value of the ARS Call Option				$ 300,000