Fair Value of Financial Instruments (Financial Instruments Carried at Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 29, 2013	Sep. 23, 2012	Jun. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value transfers level 1 to level 2	$ 0
Fair value transfers, level 2 to level 1	0
Assets, Fair Value Disclosure [Abstract]
Short-term investments	900,965		833,846
Gain on sale of investments, net	10	28
Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	13,903		14,598
Short-term investments	900,965		833,846
Total assets	914,868		848,444
Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	13,903		12,589
Short-term investments	0		0
Total assets	13,903		12,589
Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0		2,009
Short-term investments	900,965		833,846
Total assets	900,965		835,855
Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0		0
Short-term investments	0		0
Total assets	0		0
Municipal Bonds [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	273,135		249,709
Municipal Bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	273,135		249,709
Municipal Bonds [Member] \| Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Municipal Bonds [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	273,135		249,709
Municipal Bonds [Member] \| Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Corporate Bonds [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	207,785		192,060
Corporate Bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	207,785		192,060
Corporate Bonds [Member] \| Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Corporate Bonds [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	207,785		192,060
Corporate Bonds [Member] \| Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
U.S. Agency Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	31,448		39,474
U.S. Agency Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	31,448		39,474
U.S. Agency Securities [Member] \| Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
U.S. Agency Securities [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	31,448		39,474
U.S. Agency Securities [Member] \| Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Non-U.S. Certificates of Deposit [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	380,000		345,000
Non-U.S. Certificates of Deposit [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	380,000		345,000
Non-U.S. Certificates of Deposit [Member] \| Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Non-U.S. Certificates of Deposit [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	380,000		345,000
Non-U.S. Certificates of Deposit [Member] \| Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Non-U.S. Government Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	8,597		7,603
Non-U.S. Government Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	8,597		7,603
Non-U.S. Government Securities [Member] \| Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Non-U.S. Government Securities [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	8,597		7,603
Non-U.S. Government Securities [Member] \| Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0		0
Municipal Bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0		2,009
Municipal Bonds [Member] \| Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0		0
Municipal Bonds [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0		2,009
Municipal Bonds [Member] \| Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0		0
Money Market Funds [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	13,903		12,589
Money Market Funds [Member] \| Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	13,903		12,589
Money Market Funds [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0		0
Money Market Funds [Member] \| Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	$ 0		$ 0