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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 | Dec. 24, 2017 | Jun. 25, 2017
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | $ 6,037,711 | $ 6,349,485
Unrealized Gain | 4,727 | 8,968
Unrealized (Loss) | (24,604) | (4,832)
Fair Value | 6,017,834 | 6,353,621
Cash and Cash Equivalents | 1,745,173 | 2,377,534
Investments | 3,954,526 | 3,663,628
Restricted Cash & Investments | 255,984 | 256,205
Other Assets | 62,151 | 56,254
Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 2,293,416 | 2,901,178
Unrealized Gain | 3,844 | 3,691
Unrealized (Loss) | (9,028) | (2,111)
Fair Value | 2,288,232 | 2,902,758
Cash and Cash Equivalents | 1,152,169 | 1,822,353
Investments | 823,885 | 774,124
Restricted Cash & Investments | 250,027 | 250,027
Other Assets | 62,151 | 56,254
Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 3,149,942 | 2,896,999
Unrealized Gain | 883 | 5,277
Unrealized (Loss) | (15,576) | (2,721)
Fair Value | 3,135,249 | 2,899,555
Cash and Cash Equivalents | 4,608 | 10,051
Investments | 3,130,641 | 2,889,504
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Cash |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 594,353 | 551,308
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 594,353 | 551,308
Cash and Cash Equivalents | 588,396 | 545,130
Investments | 0 | 0
Restricted Cash & Investments | 5,957 | 6,178
Other Assets | 0 | 0
Time deposit | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 521,265 | 640,666
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 521,265 | 640,666
Cash and Cash Equivalents | 271,238 | 390,639
Investments | 0 | 0
Restricted Cash & Investments | 250,027 | 250,027
Other Assets | 0 | 0
Money market funds | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 878,732 | 1,423,417
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 878,732 | 1,423,417
Cash and Cash Equivalents | 878,732 | 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 | 835,112 | 783,848
Unrealized Gain | 0 | 684
Unrealized (Loss) | (9,028) | (2,111)
Fair Value | 826,084 | 782,421
Cash and Cash Equivalents | 2,199 | 8,297
Investments | 823,885 | 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 | 58,307 | 53,247
Unrealized Gain | 3,844 | 3,007
Unrealized (Loss) | 0 | 0
Fair Value | 62,151 | 56,254
Cash and Cash Equivalents | 0 | 0
Investments | 0 | 0
Restricted Cash & Investments | 0 | 0
Other Assets | 62,151 | 56,254
Municipal notes and bonds | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 179,475 | 194,575
Unrealized Gain | 10 | 308
Unrealized (Loss) | (649) | (7)
Fair Value | 178,836 | 194,876
Cash and Cash Equivalents | 0 | 0
Investments | 178,836 | 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 | 47,925 | 24,502
Unrealized Gain | 0 | 0
Unrealized (Loss) | (602) | (6)
Fair Value | 47,323 | 24,496
Cash and Cash Equivalents | 0 | 0
Investments | 47,323 | 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 | 61,006 | 62,917
Unrealized Gain | 0 | 219
Unrealized (Loss) | (490) | (114)
Fair Value | 60,516 | 63,022
Cash and Cash Equivalents | 0 | 0
Investments | 60,516 | 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 | 2,686,080 | 2,433,622
Unrealized Gain | 849 | 4,654
Unrealized (Loss) | (12,781) | (1,840)
Fair Value | 2,674,148 | 2,436,436
Cash and Cash Equivalents | 4,608 | 10,051
Investments | 2,669,540 | 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 | 53,506 | 102,760
Unrealized Gain | 24 | 87
Unrealized (Loss) | (325) | (489)
Fair Value | 53,205 | 102,358
Cash and Cash Equivalents | 0 | 0
Investments | 53,205 | 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 | 121,950 | 65,828
Unrealized Gain | 0 | 9
Unrealized (Loss) | (729) | (98)
Fair Value | 121,221 | 65,739
Cash and Cash Equivalents | 0 | 0
Investments | 121,221 | 65,739
Restricted Cash & Investments | 0 | 0
Other Assets | $ 0 | $ 0

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