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. 27, 2020	Jun. 28, 2020		Sep. 29, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	$ 6,150,229
Total cost	6,974,021	$ 7,027,291
Total, unrealized gain	13,834	10,543
Total unrealized (loss)	(1,003)	(1,244)
Total fair value	6,986,852	7,036,590
Cash and Cash Equivalents	4,129,067	4,915,172	[1]	$ 4,607,182
Investments	2,528,841	1,795,080	[1]
Restricted cash and investments	253,458	253,911	[1]
Other Assets	75,486	72,427
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total cost	2,591,246	2,330,222
Total, unrealized gain	9,150	4,944
Total unrealized (loss)	(584)	(937)
Total fair value	2,599,812	2,334,229
Cash and Cash Equivalents	1,847,332	1,786,342
Investments	676,994	475,460
Restricted cash and investments	0	0
Other Assets	75,486	72,427
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total cost	2,012,126	1,474,552
Total, unrealized gain	4,684	5,599
Total unrealized (loss)	(419)	(307)
Total fair value	2,016,391	1,479,844
Cash and Cash Equivalents	164,544	160,224
Investments	1,851,847	1,319,620
Restricted cash and investments	0	0
Other Assets	0	0
Cash
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	756,609	977,862
Cash and Cash Equivalents	753,178	973,978
Investments	0	0
Restricted cash and investments	3,431	3,884
Other Assets	0	0
Time deposits
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	1,614,040	2,244,655
Cash and Cash Equivalents	1,364,013	1,994,628
Investments	0	0
Restricted cash and investments	250,027	250,027
Other Assets	0	0
Money market funds | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	1,753,879	1,709,350
Debt securities, unrealized gain	0	0
Debt securities, unrealized (loss)	0	0
Debt securities, fair value	1,753,879	1,709,350
Cash and Cash Equivalents	1,753,879	1,709,350
Investments	0	0
Restricted cash and investments	0	0
Other Assets	0	0
U.S. Treasury and agencies | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	770,184	552,088
Debt securities, unrealized gain	264	373
Debt securities, unrealized (loss)	(1)	(9)
Debt securities, fair value	770,447	552,452
Cash and Cash Equivalents	93,453	76,992
Investments	676,994	475,460
Restricted cash and investments	0	0
Other Assets	0	0
Mutual funds | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities, cost	67,183	68,784
Trading securities, unrealized gain	8,886	4,571
Trading securities, unrealized (loss)	(583)	(928)
Trading securities, fair value	75,486	72,427
Cash and Cash Equivalents	0	0
Investments	0	0
Restricted cash and investments	0	0
Other Assets	75,486	72,427
Government-sponsored enterprises | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	3,498	31,442
Debt securities, unrealized gain	14	12
Debt securities, unrealized (loss)	0	0
Debt securities, fair value	3,512	31,454
Cash and Cash Equivalents	0	25,999
Investments	3,512	5,455
Restricted cash and investments	0	0
Other Assets	0	0
Foreign government bonds | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	60,139	10,693
Debt securities, unrealized gain	34	28
Debt securities, unrealized (loss)	(12)	(5)
Debt securities, fair value	60,161	10,716
Cash and Cash Equivalents	3,340	2,540
Investments	56,821	8,176
Restricted cash and investments	0	0
Other Assets	0	0
Corporate notes and bonds | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	1,919,478	1,405,615
Debt securities, unrealized gain	4,472	5,344
Debt securities, unrealized (loss)	(392)	(302)
Debt securities, fair value	1,923,558	1,410,657
Cash and Cash Equivalents	161,204	131,685
Investments	1,762,354	1,278,972
Restricted cash and investments	0	0
Other Assets	0	0
Mortgage backed securities — residential | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	7,754	3,142
Debt securities, unrealized gain	67	71
Debt securities, unrealized (loss)	(15)	0
Debt securities, fair value	7,806	3,213
Cash and Cash Equivalents	0	0
Investments	7,806	3,213
Restricted cash and investments	0	0
Other Assets	0	0
Mortgage backed securities — commercial | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, cost	21,257	23,660
Debt securities, unrealized gain	97	144
Debt securities, unrealized (loss)	0	0
Debt securities, fair value	21,354	23,804
Cash and Cash Equivalents	0	0
Investments	21,354	23,804
Restricted cash and investments	0	0
Other Assets	$ 0	$ 0

[1] Derived from audited financial statements