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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 | Sep. 24, 2017 | Jun. 25, 2017
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | $ 6,492,672 | $ 6,349,485
Unrealized Gain | 7,925 | 8,968
Unrealized (Loss) | (5,979) | (4,832)
Fair Value | 6,494,618 | 6,353,621
Cash and Cash Equivalents | 2,406,462 | 2,377,534
Investments | 3,775,925 | 3,663,628
Restricted Cash & Investments | 256,045 | 256,205
Other Assets | 56,186 | 56,254
Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 2,962,809 | 2,901,178
Unrealized Gain | 3,390 | 3,691
Unrealized (Loss) | (2,639) | (2,111)
Fair Value | 2,963,560 | 2,902,758
Cash and Cash Equivalents | 1,853,858 | 1,822,353
Investments | 803,489 | 774,124
Restricted Cash & Investments | 250,027 | 250,027
Other Assets | 56,186 | 56,254
Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 2,985,873 | 2,896,999
Unrealized Gain | 4,535 | 5,277
Unrealized (Loss) | (3,340) | (2,721)
Fair Value | 2,987,068 | 2,899,555
Cash and Cash Equivalents | 14,632 | 10,051
Investments | 2,972,436 | 2,889,504
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Cash |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 543,990 | 551,308
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 543,990 | 551,308
Cash and Cash Equivalents | 537,972 | 545,130
Investments | 0 | 0
Restricted Cash & Investments | 6,018 | 6,178
Other Assets | 0 | 0
Time deposit | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 693,205 | 640,666
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 693,205 | 640,666
Cash and Cash Equivalents | 443,178 | 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 | 1,395,032 | 1,423,417
Unrealized Gain | 0 | 0
Unrealized (Loss) | 0 | 0
Fair Value | 1,395,032 | 1,423,417
Cash and Cash Equivalents | 1,395,032 | 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 | 821,441 | 783,848
Unrealized Gain | 265 | 684
Unrealized (Loss) | (2,569) | (2,111)
Fair Value | 819,137 | 782,421
Cash and Cash Equivalents | 15,648 | 8,297
Investments | 803,489 | 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 | 12,798 | 12,795
Unrealized Gain | 0 | 0
Unrealized (Loss) | (102) | (167)
Fair Value | 12,696 | 12,628
Cash and Cash Equivalents | 0 | 0
Investments | 12,696 | 12,628
Restricted Cash & Investments | 0 | 0
Other Assets | 0 | 0
Mutual funds | Fair Value Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 53,131 | 53,247
Unrealized Gain | 3,125 | 3,007
Unrealized (Loss) | (70) | 0
Fair Value | 56,186 | 56,254
Cash and Cash Equivalents | 0 | 0
Investments | 0 | 0
Restricted Cash & Investments | 0 | 0
Other Assets | 56,186 | 56,254
Municipal notes and bonds | Fair Value Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cost | 165,029 | 194,575
Unrealized Gain | 322 | 308
Unrealized (Loss) | (21) | (7)
Fair Value | 165,330 | 194,876
Cash and Cash Equivalents | 0 | 0
Investments | 165,330 | 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 | 55,845 | 24,502
Unrealized Gain | 0 | 0
Unrealized (Loss) | (322) | (6)
Fair Value | 55,523 | 24,496
Cash and Cash Equivalents | 0 | 0
Investments | 55,523 | 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 | 67,040 | 62,917
Unrealized Gain | 90 | 219
Unrealized (Loss) | (128) | (114)
Fair Value | 67,002 | 63,022
Cash and Cash Equivalents | 0 | 0
Investments | 67,002 | 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 | 2,532,374 | 2,433,622
Unrealized Gain | 4,020 | 4,654
Unrealized (Loss) | (2,376) | (1,840)
Fair Value | 2,534,018 | 2,436,436
Cash and Cash Equivalents | 14,632 | 10,051
Investments | 2,519,386 | 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 | 46,614 | 102,760
Unrealized Gain | 63 | 87
Unrealized (Loss) | (116) | (489)
Fair Value | 46,561 | 102,358
Cash and Cash Equivalents | 0 | 0
Investments | 46,561 | 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 | 106,173 | 65,828
Unrealized Gain | 40 | 9
Unrealized (Loss) | (275) | (98)
Fair Value | 105,938 | 65,739
Cash and Cash Equivalents | 0 | 0
Investments | 105,938 | 65,739
Restricted Cash & Investments | 0 | 0
Other Assets | $ 0 | $ 0

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