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Fair Value (Schedule Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) (USD $) In Thousands	Jul. 01, 2011	Apr. 27, 2011
Total	$ 256,744
Contingent consideration liability recorded for business combinations	59,400	2,000
Fair Value, Measurements, Recurring [Member] | Auction Rate Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Auction rate securities
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Repurchase Agreements [Member]
Money market/repurchase agreements	254,456
Fair Value, Inputs, Level 1 [Member]
Total	254,456
Contingent consideration liability recorded for business combinations
Fair Value, Measurements, Recurring [Member] | Auction Rate Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Auction rate securities
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Repurchase Agreements [Member]
Money market/repurchase agreements
Fair Value, Inputs, Level 2 [Member]
Total
Contingent consideration liability recorded for business combinations
Fair Value, Measurements, Recurring [Member] | Auction Rate Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Auction rate securities	2,288
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Money Market Repurchase Agreements [Member]
Money market/repurchase agreements
Fair Value, Inputs, Level 3 [Member]
Total	2,288
Contingent consideration liability recorded for business combinations	59,400
Fair Value, Measurements, Recurring [Member] | Auction Rate Securities [Member]
Auction rate securities	2,288
Fair Value, Measurements, Recurring [Member] | Money Market Repurchase Agreements [Member]
Money market/repurchase agreements	$ 254,456

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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-Publisher FASB
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Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

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