Financial Instruments And Fair Value Measurements (Summary Of Short-Term And Long-Term Investments) (Details) (USD $) In Thousands	Sep. 30, 2011	Jun. 30, 2011
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investments, Amortized Cost Basis	$ 164,129	$ 181,512
Investments, Aggregate Fair Value	146,357	165,232
Time Deposit - International [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investments, Amortized Cost Basis	68,946	74,745
Investments, Aggregate Fair Value	68,946	74,745
Auction Rate Securities [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investments, Amortized Cost Basis	57,625	57,625
Investments, Aggregate Fair Value	39,853	41,345
U.S. Government Debt Securities [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investments, Amortized Cost Basis	20,089	30,222
Investments, Aggregate Fair Value	20,089	30,222
Foreign Corporate Debt Securities [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investments, Amortized Cost Basis	17,469	18,920
Investments, Aggregate Fair Value	$ 17,469	$ 18,920

- 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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