Investments (Summary of Short-term Investments by Type) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Jun. 29, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 627,455	$ 870,993
Gross Unrealized Gains	3,041	4,775
Gross Unrealized Losses	(531)	(126)
Estimated Fair Value	629,965us-gaap_AvailableForSaleSecurities	875,642us-gaap_AvailableForSaleSecurities
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	183,806	291,869
Gross Unrealized Gains	1,504	2,323
Gross Unrealized Losses	(154)	(12)
Estimated Fair Value	185,156	294,180
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	160,346	200,177
Gross Unrealized Gains	1,537	2,283
Gross Unrealized Losses	(377)	(114)
Estimated Fair Value	161,506	202,346
U.S. Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	18,994
Gross Unrealized Gains	0	141
Gross Unrealized Losses	0	0
Estimated Fair Value	0	19,135
Non-U.S. Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	283,303	352,928
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	283,303	352,928
Non-U.S. Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	7,025
Gross Unrealized Gains	0	28
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 0	$ 7,053

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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