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FINANCIAL INSTRUMENTS - Cash, Cash Equivalents, Investments, Restricted Cash and Investments and Other Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 25, 2018 | Jun. 25, 2017
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | $ 6,813,079 | $ 6,349,485
Unrealized Gain | 816 | 8,968
Unrealized (Loss) | (2,076) | (4,832)
Fair Value | 6,811,819 | 6,353,621
Cash and Cash Equivalents | 4,698,995 | 2,377,534
Investments | 1,785,976 | 3,663,628
Restricted Cash & Investments | 256,587 | 256,205
Other Assets | 70,261 | 56,254
Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 4,707,011 | 2,901,178
Unrealized Gain | 670 | 3,691
Unrealized (Loss) | (273) | (2,111)
Fair Value | 4,707,408 | 2,902,758
Cash and Cash Equivalents | 4,169,077 | 1,822,353
Investments | 218,042 | 774,124
Restricted Cash & Investments | 250,028 | 250,027
Other Assets | 70,261 | 56,254
Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 1,569,591 | 2,896,999
Unrealized Gain | 146 | 5,277
Unrealized (Loss) | (1,803) | (2,721)
Fair Value | 1,567,934 | 2,899,555
Cash and Cash Equivalents | 0 | 10,051
Investments | 1,567,934 | 2,889,504
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Cash |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 536,477 | 551,308
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 536,477 | 551,308
Cash and Cash Equivalents | 529,918 | 545,130
Investments | 0 | 0
Restricted Cash & Investments | 6,559 | 6,178
Other Assets | 0 | 0
Time deposit | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 715,363 | 640,666
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 715,363 | 640,666
Cash and Cash Equivalents | 465,335 | 390,639
Investments | 0 | 0
Restricted Cash & Investments | 250,028 | 250,027
Other Assets | 0 | 0
Money market funds | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 2,954,408 | 1,423,417
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 2,954,408 | 1,423,417
Cash and Cash Equivalents | 2,954,408 | 1,423,417
Investments | 0 | 0
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
U.S. Treasury and agencies | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 967,581 | 783,848
Unrealized Gain | 1 | 684
Unrealized (Loss) | (206) | (2,111)
Fair Value | 967,376 | 782,421
Cash and Cash Equivalents | 749,334 | 8,297
Investments | 218,042 | 774,124
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
U.S. Treasury and agencies | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost |  | 12,795
Unrealized Gain |  | 0
Unrealized (Loss) |  | (167)
Fair Value |  | 12,628
Cash and Cash Equivalents |  | 0
Investments |  | 12,628
Restricted Cash & Investments |  | 0
Other Assets |  | 0
Mutual funds | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 69,659 | 53,247
Unrealized Gain | 669 | 3,007
Unrealized (Loss) | (67) | 0
Fair Value | 70,261 | 56,254
Cash and Cash Equivalents | 0 | 0
Investments | 0 | 0
Restricted Cash & Investments | 0 | 0
Other Assets | 70,261 | 56,254
Municipal notes and bonds | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 156,279 | 194,575
Unrealized Gain | 1 | 308
Unrealized (Loss) | (533) | (7)
Fair Value | 155,747 | 194,876
Cash and Cash Equivalents | 0 | 0
Investments | 155,747 | 194,876
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Government-sponsored enterprises | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 19,467 | 24,502
Unrealized Gain | 1 | 0
Unrealized (Loss) | (180) | (6)
Fair Value | 19,288 | 24,496
Cash and Cash Equivalents | 0 | 0
Investments | 19,288 | 24,496
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Foreign government bonds | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 6,462 | 62,917
Unrealized Gain | 0 | 219
Unrealized (Loss) | 0 | (114)
Fair Value | 6,462 | 63,022
Cash and Cash Equivalents | 0 | 0
Investments | 6,462 | 63,022
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Corporate notes and bonds | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 1,300,174 | 2,433,622
Unrealized Gain | 137 | 4,654
Unrealized (Loss) | (1,090) | (1,840)
Fair Value | 1,299,221 | 2,436,436
Cash and Cash Equivalents | 0 | 10,051
Investments | 1,299,221 | 2,426,385
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Mortgage backed securities — residential | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 12,204 | 102,760
Unrealized Gain | 5 | 87
Unrealized (Loss) | 0 | (489)
Fair Value | 12,209 | 102,358
Cash and Cash Equivalents | 0 | 0
Investments | 12,209 | 102,358
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Mortgage backed securities — commercial | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 75,005 | 65,828
Unrealized Gain | 2 | 9
Unrealized (Loss) | 0 | (98)
Fair Value | 75,007 | 65,739
Cash and Cash Equivalents | 0 | 0
Investments | 75,007 | 65,739
Restricted Cash & Investments | 0 | 0
Other Assets | $ 0 | $ 0

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