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Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 29, 2014 | Jun. 30, 2013
--- | --- | ---
Financial Instruments [Line Items] |  |
Fair value | $ 2,927,105 | $ 2,224,942
Derivatives Assets | 1,592 | 4,929
Total | 2,950,455 | 2,255,183
Derivative liabilities | 929 | 1,815
Municipal Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 335,433 | 268,746
Corporate Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 1,008,788 | 860,492
Money Market Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 1,168,261 | 725,311
US Treasury and Agencies |  |
Financial Instruments [Line Items] |  |
Fair value | 212,587 | 155,293
Government-Sponsored Enterprises |  |
Financial Instruments [Line Items] |  |
Fair value | 27,692 | 54,805
Foreign Government Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 35,467 | 24,972
Mortgage Backed Securities - Residential |  |
Financial Instruments [Line Items] |  |
Fair value | 26,944 | 27,365
Mortgage Backed Securities - Commercial |  |
Financial Instruments [Line Items] |  |
Fair value | 111,933 | 107,958
Mutual Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 21,758 | 18,216
Publicly Traded Equity Securities |  |
Financial Instruments [Line Items] |  |
Fair value |  | 7,096
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Financial Instruments [Line Items] |  |
Fair value | 1,513,397 | 1,045,489
Total | 1,535,155 | 1,070,801
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) | Money Market Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 1,168,261 | 725,311
Quoted Prices in Active Markets for Identical Assets (Level 1) | US Treasury and Agencies |  |
Financial Instruments [Line Items] |  |
Fair value | 212,587 | 155,293
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual Funds |  |
Financial Instruments [Line Items] |  |
Fair value | 21,758 | 18,216
Quoted Prices in Active Markets for Identical Assets (Level 1) | Publicly Traded Equity Securities |  |
Financial Instruments [Line Items] |  |
Fair value |  | 7,096
Significant Other Observable Inputs (Level 2) |  |
Financial Instruments [Line Items] |  |
Fair value | 1,413,708 | 1,179,453
Derivatives Assets | 1,592 | 4,929
Total | 1,415,300 | 1,184,382
Derivative liabilities | 923 | 1,620
Significant Other Observable Inputs (Level 2) | Municipal Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 335,433 | 268,746
Significant Other Observable Inputs (Level 2) | Corporate Notes And Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 876,239 | 695,607
Significant Other Observable Inputs (Level 2) | Government-Sponsored Enterprises |  |
Financial Instruments [Line Items] |  |
Fair value | 27,692 | 54,805
Significant Other Observable Inputs (Level 2) | Foreign Government Bonds |  |
Financial Instruments [Line Items] |  |
Fair value | 35,467 | 24,972
Significant Other Observable Inputs (Level 2) | Mortgage Backed Securities - Residential |  |
Financial Instruments [Line Items] |  |
Fair value | 26,944 | 27,365
Significant Other Observable Inputs (Level 2) | Mortgage Backed Securities - Commercial |  |
Financial Instruments [Line Items] |  |
Fair value | 111,933 | 107,958
Significant Unobservable Inputs (Level 3) |  |
Financial Instruments [Line Items] |  |
Derivative liabilities | $ 6 | $ 195

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