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. 23, 2018	Jun. 24, 2018		Dec. 24, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, Cost	$ 3,472,614
Total Cost	3,957,769	$ 5,276,170
Total, Unrealized Gain	1,112	648
Total Unrealized (Loss)	(1,991)	(1,980)
Total Fair Value	3,956,890	5,274,838
Cash and Cash Equivalents	3,359,793	4,512,257	[1]	$ 1,745,173
Investments	275,670	437,338	[1]
Restricted cash and investments	255,292	256,301	[1]
Other Assets	66,135	68,942
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Cost	1,780,148	2,767,054
Total, Unrealized Gain	1,032	516
Total Unrealized (Loss)	(785)	(312)
Total Fair Value	1,780,395	2,767,258
Cash and Cash Equivalents	1,701,131	2,675,528
Investments	13,129	22,788
Restricted cash and investments	0	0
Other Assets	66,135	68,942
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Cost	266,101	801,086
Total, Unrealized Gain	80	132
Total Unrealized (Loss)	(1,206)	(1,668)
Total Fair Value	264,975	799,550
Cash and Cash Equivalents	2,434	385,000
Investments	262,541	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	419,372	708,364
Cash and Cash Equivalents	414,107	702,090
Investments	0	0
Restricted cash and investments	5,265	6,274
Other Assets	0	0
Time deposit
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	1,492,148	999,666
Cash and Cash Equivalents	1,242,121	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	1,697,250	2,341,807
Debt securities, Unrealized Gain	0	0
Debt securities, Unrealized (Loss)	0	0
Debt securities, Fair Value	1,697,250	2,341,807
Cash and Cash Equivalents	1,697,250	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	17,115	356,679
Debt securities, Unrealized Gain	16	0
Debt securities, Unrealized (Loss)	(121)	(170)
Debt securities, Fair Value	17,010	356,509
Cash and Cash Equivalents	3,881	333,721
Investments	13,129	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	65,783	68,568
Trading securities, Unrealized Gain	1,016	516
Trading securities, Unrealized (Loss)	(664)	(142)
Trading securities, Fair Value	66,135	68,942
Cash and Cash Equivalents	0	0
Investments	0	0
Restricted cash and investments	0	0
Other Assets	66,135	68,942
Municipal notes and bonds | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, Cost	151,056	152,378
Debt securities, Unrealized Gain	72	37
Debt securities, Unrealized (Loss)	(262)	(279)
Debt securities, Fair Value	150,866	152,136
Cash and Cash Equivalents	0	0
Investments	150,866	152,136
Restricted cash and investments	0	0
Other Assets	0	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)	(160)	(201)
Debt securities, Fair Value	10,869	110,762
Cash and Cash Equivalents	0	99,934
Investments	10,869	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		19,986
Debt securities, Unrealized Gain		0
Debt securities, Unrealized (Loss)		(1)
Debt securities, Fair Value		19,985
Cash and Cash Equivalents		19,985
Investments		0
Restricted cash and investments		0
Other Assets		0
Corporate notes and bonds | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, Cost	104,016	516,955
Debt securities, Unrealized Gain	8	95
Debt securities, Unrealized (Loss)	(784)	(1,184)
Debt securities, Fair Value	103,240	515,866
Cash and Cash Equivalents	2,434	265,081
Investments	100,806	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		804
Debt securities, Unrealized Gain		0
Debt securities, Unrealized (Loss)		(3)
Debt securities, Fair Value		801
Cash and Cash Equivalents		0
Investments		801
Restricted cash and investments		0
Other Assets		$ 0

[1] Derived from audited financial statements