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Investments (Contractual Maturities of Marketable Investments) (Details) (USD $) In Thousands, unless otherwise specified | Sep. 23, 2012 | Jun. 24, 2012
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Within One Year | $ 368,421 |
After One, Within Five Years | 284,011 |
After Five, Within Ten Years | 0 |
After Ten Years | 0 |
Total | 652,432 | 565,628
Municipal Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Within One Year | 109,450 |
After One, Within Five Years | 129,469 |
After Five, Within Ten Years | 0 |
After Ten Years | 0 |
Total | 238,919 |
Corporate Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Within One Year | 40,096 |
After One, Within Five Years | 104,907 |
After Five, Within Ten Years | 0 |
After Ten Years | 0 |
Total | 145,003 |
Certificates of Deposit [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Within One Year | 185,000 |
After One, Within Five Years | 0 |
After Five, Within Ten Years | 0 |
After Ten Years | 0 |
Total | 185,000 |
U.S. Agency Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Within One Year | 29,334 |
After One, Within Five Years | 43,938 |
After Five, Within Ten Years | 0 |
After Ten Years | 0 |
Total | 73,272 |
Non-U.S. Government Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Within One Year | 4,541 |
After One, Within Five Years | 5,697 |
After Five, Within Ten Years | 0 |
After Ten Years | 0 |
Total | $ 10,238 |

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- Definition Amount of available-for-sale debt securities at fair value maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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