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Financial Instruments - Cash, Cash Equivalents, Short-Term Investments, Restricted Cash and Investments and Other Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Jun. 24, 2018 | Jun. 25, 2017
--- | --- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | $ 5,216,315 |  |
Total Cost | 5,760,736 | $ 5,276,170 |
Total, Unrealized Gain | 3,836 | 648 |
Total, Unrealized (Loss) | (451) | (1,980) |
Total, Fair Value | 5,764,121 | 5,274,838 |
Cash and Cash Equivalents | 3,658,219 | 4,512,257 | $ 2,377,534
Investments | 1,772,984 | 437,338 |
Restricted Cash & Investments | 255,177 | 256,301 |
Other Assets | 77,741 | 68,942 |
Cash |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Cash and Cash Equivalents | 467,460 | 708,364 |
Cash and Cash Equivalents | 462,310 | 702,090 |
Investments | 0 | 0 |
Restricted Cash & Investments | 5,150 | 6,274 |
Other Assets | 0 | 0 |
Time deposit |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Cash and Cash Equivalents | 1,563,686 | 999,666 |
Cash and Cash Equivalents | 1,313,659 | 749,639 |
Investments | 0 | 0 |
Restricted Cash & Investments | 250,027 | 250,027 |
Other Assets | 0 | 0 |
Level 1 |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Total Cost | 2,187,275 | 2,767,054 |
Total, Unrealized Gain | 1,346 | 516 |
Total, Unrealized (Loss) | (307) | (312) |
Total, Fair Value | 2,188,314 | 2,767,258 |
Cash and Cash Equivalents | 1,731,640 | 2,675,528 |
Investments | 378,933 | 22,788 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 77,741 | 68,942 |
Level 1 | Money market funds |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | 1,644,659 | 2,341,807 |
Debt securities, Unrealized Gain | 0 | 0 |
Debt securities, Unrealized (Loss) | 0 | 0 |
Debt securities, Fair Value | 1,644,659 | 2,341,807 |
Cash and Cash Equivalents | 1,644,659 | 2,341,807 |
Investments | 0 | 0 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 0 | 0 |
Level 1 | U.S. Treasury and agencies |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | 465,655 | 356,679 |
Debt securities, Unrealized Gain | 283 | 0 |
Debt securities, Unrealized (Loss) | (24) | (170) |
Debt securities, Fair Value | 465,914 | 356,509 |
Cash and Cash Equivalents | 86,981 | 333,721 |
Investments | 378,933 | 22,788 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 0 | 0 |
Level 1 | Mutual funds |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Trading securities, Cost | 76,961 | 68,568 |
Trading securities, Unrealized Gain | 1,063 | 516 |
Trading securities, Unrealized (Loss) | (283) | (142) |
Trading securities, Fair Value | 77,741 | 68,942 |
Cash and Cash Equivalents | 0 | 0 |
Investments | 0 | 0 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 77,741 | 68,942 |
Level 2 |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Total Cost | 1,542,315 | 801,086 |
Total, Unrealized Gain | 2,490 | 132 |
Total, Unrealized (Loss) | (144) | (1,668) |
Total, Fair Value | 1,544,661 | 799,550 |
Cash and Cash Equivalents | 150,610 | 385,000 |
Investments | 1,394,051 | 414,550 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 0 | 0 |
Level 2 | Municipal notes and bonds |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost |  | 152,378 |
Debt securities, Unrealized Gain |  | 37 |
Debt securities, Unrealized (Loss) |  | (279) |
Debt securities, Fair Value |  | 152,136 |
Cash and Cash Equivalents |  | 0 |
Investments |  | 152,136 |
Restricted Cash & Investments |  | 0 |
Other Assets |  | 0 |
Level 2 | Government-sponsored enterprises |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | 16,005 | 110,963 |
Debt securities, Unrealized Gain | 5 | 0 |
Debt securities, Unrealized (Loss) | (41) | (201) |
Debt securities, Fair Value | 15,969 | 110,762 |
Cash and Cash Equivalents | 0 | 99,934 |
Investments | 15,969 | 10,828 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 0 | 0 |
Level 2 | Foreign government bonds |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | 24,408 | 19,986 |
Debt securities, Unrealized Gain | 35 | 0 |
Debt securities, Unrealized (Loss) | 0 | (1) |
Debt securities, Fair Value | 24,443 | 19,985 |
Cash and Cash Equivalents | 0 | 19,985 |
Investments | 24,443 | 0 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 0 | 0 |
Level 2 | Corporate notes and bonds |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | 1,466,167 | 516,955 |
Debt securities, Unrealized Gain | 2,310 | 95 |
Debt securities, Unrealized (Loss) | (99) | (1,184) |
Debt securities, Fair Value | 1,468,378 | 515,866 |
Cash and Cash Equivalents | 150,610 | 265,081 |
Investments | 1,317,768 | 250,785 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 0 | 0 |
Level 2 | Mortgage backed securities - residential |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | 6,148 | 804 |
Debt securities, Unrealized Gain | 0 | 0 |
Debt securities, Unrealized (Loss) | (4) | (3) |
Debt securities, Fair Value | 6,144 | 801 |
Cash and Cash Equivalents | 0 | 0 |
Investments | 6,144 | 801 |
Restricted Cash & Investments | 0 | 0 |
Other Assets | 0 | $ 0 |
Level 2 | Commercial Mortgage Backed Securities [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt securities, Cost | 29,587 |  |
Debt securities, Unrealized Gain | 140 |  |
Debt securities, Unrealized (Loss) | 0 |  |
Debt securities, Fair Value | 29,727 |  |
Cash and Cash Equivalents | 0 |  |
Investments | 29,727 |  |
Restricted Cash & Investments | 0 |  |
Other Assets | $ 0 |  |

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