Cash, Cash Equivalents, Investments, Restricted Cash and Investments and Other Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 27, 2016	Mar. 29, 2015	Mar. 27, 2016	Mar. 29, 2015	Jun. 28, 2015
Financial Instruments [Line Items]
Total cost	$ 4,811,325,000		$ 4,811,325,000		$ 4,283,009,000
Unrealized Gain	4,146,000		4,146,000		4,261,000
Unrealized (Loss)	(4,489,000)		(4,489,000)		(6,352,000)
Marketable securities	4,810,982,000		4,810,982,000		4,280,918,000
Cash and Cash Equivalents	2,232,021,000		2,232,021,000		1,501,539,000
Investments	2,306,718,000		2,306,718,000		2,574,947,000
Restricted Cash & Investments	227,838,000		227,838,000		170,969,000
Other Assets	44,405,000		44,405,000		33,463,000
Other than temporary impairment included in net realized gains (losses)	0	$ 0	0	$ 0
Gross realized gains from sale of investments	200,000	1,000,000	1,000,000	1,900,000
Gross realized losses from sale of investments	(300,000)	$ (400,000)	(2,400,000)	$ (1,400,000)
Fair Value Level 1
Financial Instruments [Line Items]
Total cost	2,349,114,000		2,349,114,000		1,735,035,000
Unrealized Gain	1,440,000		1,440,000		2,998,000
Unrealized (Loss)	(725,000)		(725,000)		(908,000)
Marketable securities	2,349,829,000		2,349,829,000		1,737,125,000
Cash and Cash Equivalents	1,790,476,000		1,790,476,000		1,222,613,000
Investments	292,595,000		292,595,000		315,291,000
Restricted Cash & Investments	222,353,000		222,353,000		165,758,000
Other Assets	44,405,000		44,405,000		33,463,000
Fair Value Level 2
Financial Instruments [Line Items]
Total cost	2,015,181,000		2,015,181,000		2,271,311,000
Unrealized Gain	2,706,000		2,706,000		1,263,000
Unrealized (Loss)	(3,764,000)		(3,764,000)		(5,444,000)
Marketable securities	2,014,123,000		2,014,123,000		2,267,130,000
Cash and Cash Equivalents					7,474,000
Investments	2,014,123,000		2,014,123,000		2,259,656,000
Cash
Financial Instruments [Line Items]
Total cost	447,030,000		447,030,000		276,663,000
Marketable securities	447,030,000		447,030,000		276,663,000
Cash and Cash Equivalents	441,545,000		441,545,000		271,452,000
Restricted Cash & Investments	5,485,000		5,485,000		5,211,000
Time Deposit | Fair Value Level 1
Financial Instruments [Line Items]
Total cost	175,977,000		175,977,000		177,567,000
Marketable securities	175,977,000		175,977,000		177,567,000
Cash and Cash Equivalents	43,148,000		43,148,000		44,738,000
Restricted Cash & Investments	132,829,000		132,829,000		132,829,000
Money Market Funds | Fair Value Level 1
Financial Instruments [Line Items]
Total cost	1,722,329,000		1,722,329,000		1,177,875,000
Marketable securities	1,722,329,000		1,722,329,000		1,177,875,000
Cash and Cash Equivalents	1,722,329,000		1,722,329,000		1,177,875,000
U.S. Treasury and Agencies | Fair Value Level 1
Financial Instruments [Line Items]
Total cost	406,762,000		406,762,000		349,009,000
Unrealized Gain	602,000		602,000		72,000
Unrealized (Loss)	(246,000)		(246,000)		(861,000)
Marketable securities	407,118,000		407,118,000		348,220,000
Cash and Cash Equivalents	24,999,000		24,999,000
Investments	292,595,000		292,595,000		315,291,000
Restricted Cash & Investments	89,524,000		89,524,000		32,929,000
U.S. Treasury and Agencies | Fair Value Level 2
Financial Instruments [Line Items]
Total cost	7,996,000		7,996,000		4,007,000
Unrealized Gain	77,000		77,000		0
Unrealized (Loss)	0		0		(4,000)
Marketable securities	8,073,000		8,073,000		4,003,000
Investments	8,073,000		8,073,000		4,003,000
Mutual Funds | Fair Value Level 1
Financial Instruments [Line Items]
Total cost	44,046,000		44,046,000		30,584,000
Unrealized Gain	838,000		838,000		2,926,000
Unrealized (Loss)	(479,000)		(479,000)		(47,000)
Marketable securities	44,405,000		44,405,000		33,463,000
Other Assets	44,405,000		44,405,000		33,463,000
Municipal Notes and Bonds | Fair Value Level 2
Financial Instruments [Line Items]
Total cost	579,996,000		579,996,000		659,550,000
Unrealized Gain	777,000		777,000		429,000
Unrealized (Loss)	(102,000)		(102,000)		(335,000)
Marketable securities	580,671,000		580,671,000		659,644,000
Cash and Cash Equivalents					7,474,000
Investments	580,671,000		580,671,000		652,170,000
Government-Sponsored Enterprises | Fair Value Level 2
Financial Instruments [Line Items]
Total cost	36,206,000		36,206,000		53,612,000
Unrealized Gain	8,000		8,000		2,000
Unrealized (Loss)	(26,000)		(26,000)		(249,000)
Marketable securities	36,188,000		36,188,000		53,365,000
Investments	36,188,000		36,188,000		53,365,000
Foreign Government Bonds | Fair Value Level 2
Financial Instruments [Line Items]
Total cost	46,358,000		46,358,000		50,336,000
Unrealized Gain	17,000		17,000		31,000
Unrealized (Loss)	(73,000)		(73,000)		(161,000)
Marketable securities	46,302,000		46,302,000		50,206,000
Investments	46,302,000		46,302,000		50,206,000
Corporate Notes and Bonds | Fair Value Level 2
Financial Instruments [Line Items]
Total cost	1,221,175,000		1,221,175,000		1,329,587,000
Unrealized Gain	1,782,000		1,782,000		685,000
Unrealized (Loss)	(2,626,000)		(2,626,000)		(3,797,000)
Marketable securities	1,220,331,000		1,220,331,000		1,326,475,000
Investments	1,220,331,000		1,220,331,000		1,326,475,000
Mortgage Backed Securities — Residential | Fair Value Level 2
Financial Instruments [Line Items]
Total cost	33,410,000		33,410,000		32,231,000
Unrealized Gain	35,000		35,000		72,000
Unrealized (Loss)	(352,000)		(352,000)		(292,000)
Marketable securities	33,093,000		33,093,000		32,011,000
Investments	33,093,000		33,093,000		32,011,000
Mortgage Backed Securities — Commercial | Fair Value Level 2
Financial Instruments [Line Items]
Total cost	90,040,000		90,040,000		141,988,000
Unrealized Gain	10,000		10,000		44,000
Unrealized (Loss)	(585,000)		(585,000)		(606,000)
Marketable securities	89,465,000		89,465,000		141,426,000
Investments	$ 89,465,000		$ 89,465,000		$ 141,426,000