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Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 30, 2014 | Jun. 30, 2013
--- | --- | ---
Financial Instruments [Line Items] |  |
Fair value | $ 1,462,171 | $ 1,334,746
Derivative Assets | 2,487 | 4,929
Total Assets | 2,674,450 | 2,255,183
Derivative Liabilities | 1,340 | 1,815
Money Market Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 1,042,596 | 725,311
Municipal Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 248,949 | 268,746
US Treasury and Agencies |  |
Financial Instruments [Line Items] |  |
Fair value | 182,967 | 155,293
Government-Sponsored Enterprises |  |
Financial Instruments [Line Items] |  |
Fair value | 41,089 | 54,805
Foreign Government Debt Securities |  |
Financial Instruments [Line Items] |  |
Fair value | 34,988 | 24,972
Corporate Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 961,378 | 860,492
Mortgage Backed Securities - Residential |  |
Financial Instruments [Line Items] |  |
Fair value | 26,580 | 27,365
Mortgage Backed Securities - Commercial |  |
Financial Instruments [Line Items] |  |
Fair value | 104,857 | 107,958
Publicly Traded Equity Securities |  |
Financial Instruments [Line Items] |  |
Fair value |  | 7,096
Total Short Term Investments |  |
Financial Instruments [Line Items] |  |
Fair value | 2,643,404 | 2,224,942
Mutual Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 28,559 | 18,216
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Financial Instruments [Line Items] |  |
Fair value | 176,879 | 155,293
Total Assets | 1,386,671 | 1,070,801
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money Market Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 1,042,596 | 725,311
Quoted Prices in Active Markets for Identical Assets (Level 1) | US Treasury and Agencies |  |
Financial Instruments [Line Items] |  |
Fair value | 182,967 | 155,293
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 132,549 | 164,885
Quoted Prices in Active Markets for Identical Assets (Level 1) | Publicly Traded Equity Securities |  |
Financial Instruments [Line Items] |  |
Fair value |  | 7,096
Quoted Prices in Active Markets for Identical Assets (Level 1) | Total Short Term Investments |  |
Financial Instruments [Line Items] |  |
Fair value | 1,358,112 | 1,045,489
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 28,559 | 18,216
Significant Other Observable Inputs (Level 2) |  |
Financial Instruments [Line Items] |  |
Fair value | 1,285,292 | 1,179,453
Derivative Assets | 2,487 | 4,929
Total Assets | 1,287,779 | 1,184,382
Derivative Liabilities | 1,190 | 1,620
Significant Other Observable Inputs (Level 2) | Municipal Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 248,949 | 268,746
Significant Other Observable Inputs (Level 2) | Government-Sponsored Enterprises |  |
Financial Instruments [Line Items] |  |
Fair value | 41,089 | 54,805
Significant Other Observable Inputs (Level 2) | Foreign Government Debt Securities |  |
Financial Instruments [Line Items] |  |
Fair value | 34,988 | 24,972
Significant Other Observable Inputs (Level 2) | Corporate Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 828,829 | 695,607
Significant Other Observable Inputs (Level 2) | Mortgage Backed Securities - Residential |  |
Financial Instruments [Line Items] |  |
Fair value | 26,580 | 27,365
Significant Other Observable Inputs (Level 2) | Mortgage Backed Securities - Commercial |  |
Financial Instruments [Line Items] |  |
Fair value | 104,857 | 107,958
Significant Other Observable Inputs (Level 2) | Total Short Term Investments |  |
Financial Instruments [Line Items] |  |
Fair value | 1,285,292 | 1,179,453
Significant Unobservable Inputs (Level 3) |  |
Financial Instruments [Line Items] |  |
Derivative Liabilities | $ 150 | $ 195

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