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. 31, 2019	Jun. 24, 2018		Mar. 25, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, Cost	$ 5,819,243
Total Cost	6,473,790	$ 5,276,170
Total, Unrealized Gain	1,668	648
Total Unrealized (Loss)	(789)	(1,980)
Total Fair Value	6,474,669	5,274,838
Cash and Cash Equivalents	4,931,611	4,512,257	[1]	$ 4,698,995
Investments	1,209,315	437,338	[1]
Restricted cash and investments	255,774	256,301	[1]
Other Assets	77,969	68,942
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Cost	2,769,854	2,767,054
Total, Unrealized Gain	1,099	516
Total Unrealized (Loss)	(252)	(312)
Total Fair Value	2,770,701	2,767,258
Cash and Cash Equivalents	2,404,945	2,675,528
Investments	287,787	22,788
Restricted cash and investments	0	0
Other Assets	77,969	68,942
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Cost	1,253,890	801,086
Total, Unrealized Gain	569	132
Total Unrealized (Loss)	(537)	(1,668)
Total Fair Value	1,253,922	799,550
Cash and Cash Equivalents	332,394	385,000
Investments	921,528	414,550
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	577,420	708,364
Cash and Cash Equivalents	571,673	702,090
Investments	0	0
Restricted cash and investments	5,747	6,274
Other Assets	0	0
Time deposit
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	1,872,626	999,666
Cash and Cash Equivalents	1,622,599	749,639
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	2,024,322	2,341,807
Debt securities, Unrealized Gain	0	0
Debt securities, Unrealized (Loss)	0	0
Debt securities, Fair Value	2,024,322	2,341,807
Cash and Cash Equivalents	2,024,322	2,341,807
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	668,405	356,679
Debt securities, Unrealized Gain	74	0
Debt securities, Unrealized (Loss)	(69)	(170)
Debt securities, Fair Value	668,410	356,509
Cash and Cash Equivalents	380,623	333,721
Investments	287,787	22,788
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	77,127	68,568
Trading securities, Unrealized Gain	1,025	516
Trading securities, Unrealized (Loss)	(183)	(142)
Trading securities, Fair Value	77,969	68,942
Cash and Cash Equivalents	0	0
Investments	0	0
Restricted cash and investments	0	0
Other Assets	77,969	68,942
Municipal notes and bonds | Level 2
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 and investments		0
Other Assets		0
Government-sponsored enterprises | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, Cost	11,029	110,963
Debt securities, Unrealized Gain	0	0
Debt securities, Unrealized (Loss)	(97)	(201)
Debt securities, Fair Value	10,932	110,762
Cash and Cash Equivalents	0	99,934
Investments	10,932	10,828
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	10,111	19,986
Debt securities, Unrealized Gain	4	0
Debt securities, Unrealized (Loss)	0	(1)
Debt securities, Fair Value	10,115	19,985
Cash and Cash Equivalents	0	19,985
Investments	10,115	0
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	1,176,117	516,955
Debt securities, Unrealized Gain	523	95
Debt securities, Unrealized (Loss)	(426)	(1,184)
Debt securities, Fair Value	1,176,214	515,866
Cash and Cash Equivalents	324,951	265,081
Investments	851,263	250,785
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	17,397	804
Debt securities, Unrealized Gain	2	0
Debt securities, Unrealized (Loss)	0	(3)
Debt securities, Fair Value	17,399	801
Cash and Cash Equivalents	7,443	0
Investments	9,956	801
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	39,236
Debt securities, Unrealized Gain	40
Debt securities, Unrealized (Loss)	(14)
Debt securities, Fair Value	39,262
Cash and Cash Equivalents	0
Investments	39,262
Restricted cash and investments	0
Other Assets	$ 0

[1] Derived from audited financial statements