FINANCIAL INSTRUMENTS - Cash, Cash Equivalents, Investments, Restricted Cash and Investments and Other Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 25, 2016	Dec. 27, 2015	Dec. 25, 2016	Dec. 27, 2015	Jun. 26, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	$ 6,142,581,000		$ 6,142,581,000		$ 7,111,464,000
Unrealized Gain	2,288,000		2,288,000		8,522,000
Unrealized (Loss)	(13,807,000)		(13,807,000)		(1,310,000)
Fair Value	6,131,062,000		6,131,062,000		7,118,676,000
Cash and Cash Equivalents	2,503,960,000		2,503,960,000		5,039,322,000
Investments	3,329,425,000		3,329,425,000		1,788,612,000
Restricted Cash & Investments	255,175,000		255,175,000		250,421,000
Other Assets	42,502,000		42,502,000		40,321,000
Other than temporary impairment included in net realized gains (losses)	0	$ 0	0	$ 0
Gross realized gains from sale of investments	100,000	600,000	2,700,000	800,000
Gross realized losses from sale of investments	(400,000)	$ (1,400,000)	(600,000)	$ (2,000,000)
Fair Value Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	2,814,865,000		2,814,865,000		5,294,379,000
Unrealized Gain	1,652,000		1,652,000		3,441,000
Unrealized (Loss)	(4,720,000)		(4,720,000)		(399,000)
Fair Value	2,811,797,000		2,811,797,000		5,297,421,000
Cash and Cash Equivalents	1,801,366,000		1,801,366,000		4,626,749,000
Investments	717,901,000		717,901,000		385,573,000
Restricted Cash & Investments	250,028,000		250,028,000		244,778,000
Other Assets	42,502,000		42,502,000		40,321,000
Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	2,711,794,000		2,711,794,000		1,398,869,000
Unrealized Gain	636,000		636,000		5,081,000
Unrealized (Loss)	(9,087,000)		(9,087,000)		(911,000)
Fair Value	2,703,343,000		2,703,343,000		1,403,039,000
Cash and Cash Equivalents	91,819,000		91,819,000		0
Investments	2,611,524,000		2,611,524,000		1,403,039,000
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
Cash
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	615,922,000		615,922,000		418,216,000
Unrealized Gain	0		0		0
Unrealized (Loss)	0		0		0
Fair Value	615,922,000		615,922,000		418,216,000
Cash and Cash Equivalents	610,775,000		610,775,000		412,573,000
Investments	0		0		0
Restricted Cash & Investments	5,147,000		5,147,000		5,643,000
Other Assets	0		0		0
Time Deposit | Fair Value Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	728,810,000		728,810,000		904,243,000
Unrealized Gain	0		0		0
Unrealized (Loss)	0		0		0
Fair Value	728,810,000		728,810,000		904,243,000
Cash and Cash Equivalents	478,782,000		478,782,000		659,465,000
Investments	0		0		0
Restricted Cash & Investments	250,028,000		250,028,000		244,778,000
Other Assets	0		0		0
Money Market Funds | Fair Value Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	1,233,602,000		1,233,602,000		3,904,288,000
Unrealized Gain	0		0		0
Unrealized (Loss)	0		0		0
Fair Value	1,233,602,000		1,233,602,000		3,904,288,000
Cash and Cash Equivalents	1,233,602,000		1,233,602,000		3,904,288,000
Investments	0		0		0
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
U.S. Treasury and Agencies | Fair Value Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	811,564,000		811,564,000		446,530,000
Unrealized Gain	39,000		39,000		2,041,000
Unrealized (Loss)	(4,720,000)		(4,720,000)		(2,000)
Fair Value	806,883,000		806,883,000		448,569,000
Cash and Cash Equivalents	88,982,000		88,982,000		62,996,000
Investments	717,901,000		717,901,000		385,573,000
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
U.S. Treasury and Agencies | Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost					8,068,000
Unrealized Gain					151,000
Unrealized (Loss)					0
Fair Value					8,219,000
Cash and Cash Equivalents					0
Investments					8,219,000
Restricted Cash & Investments					0
Other Assets					0
Mutual Funds | Fair Value Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	40,889,000		40,889,000		39,318,000
Unrealized Gain	1,613,000		1,613,000		1,400,000
Unrealized (Loss)	0		0		(397,000)
Fair Value	42,502,000		42,502,000		40,321,000
Cash and Cash Equivalents	0		0		0
Investments	0		0		0
Restricted Cash & Investments	0		0		0
Other Assets	42,502,000		42,502,000		40,321,000
Municipal Notes and Bonds | Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	134,838,000		134,838,000		265,386,000
Unrealized Gain	48,000		48,000		355,000
Unrealized (Loss)	(115,000)		(115,000)		(16,000)
Fair Value	134,771,000		134,771,000		265,725,000
Cash and Cash Equivalents	0		0		0
Investments	134,771,000		134,771,000		265,725,000
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
Government-Sponsored Enterprises | Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	31,357,000		31,357,000		31,885,000
Unrealized Gain	0		0		91,000
Unrealized (Loss)	(42,000)		(42,000)		(13,000)
Fair Value	31,315,000		31,315,000		31,963,000
Cash and Cash Equivalents	0		0		0
Investments	31,315,000		31,315,000		31,963,000
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
Foreign Government Bonds | Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	30,605,000		30,605,000		41,440,000
Unrealized Gain	0		0		76,000
Unrealized (Loss)	(177,000)		(177,000)		(4,000)
Fair Value	30,428,000		30,428,000		41,512,000
Cash and Cash Equivalents	1,154,000		1,154,000		0
Investments	29,274,000		29,274,000		41,512,000
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
Corporate Notes and Bonds | Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	2,361,859,000		2,361,859,000		979,566,000
Unrealized Gain	542,000		542,000		4,341,000
Unrealized (Loss)	(7,563,000)		(7,563,000)		(566,000)
Fair Value	2,354,838,000		2,354,838,000		983,341,000
Cash and Cash Equivalents	80,167,000		80,167,000		0
Investments	2,274,671,000		2,274,671,000		983,341,000
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
Mortgage Backed Securities — Residential | Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	98,869,000		98,869,000		17,395,000
Unrealized Gain	42,000		42,000		37,000
Unrealized (Loss)	(975,000)		(975,000)		(152,000)
Fair Value	97,936,000		97,936,000		17,280,000
Cash and Cash Equivalents	10,498,000		10,498,000		0
Investments	87,438,000		87,438,000		17,280,000
Restricted Cash & Investments	0		0		0
Other Assets	0		0		0
Mortgage Backed Securities — Commercial | Fair Value Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	54,266,000		54,266,000		55,129,000
Unrealized Gain	4,000		4,000		30,000
Unrealized (Loss)	(215,000)		(215,000)		(160,000)
Fair Value	54,055,000		54,055,000		54,999,000
Cash and Cash Equivalents	0		0		0
Investments	54,055,000		54,055,000		54,999,000
Restricted Cash & Investments	0		0		0
Other Assets	$ 0		$ 0		$ 0