Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0
Assets, Fair Value Disclosure [Abstract]
Short-term investments	875,642	833,846
Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	40,031	14,598
Short-term investments	875,642	833,846
Total assets	915,673	848,444
Quoted Prices in Active Markets for Identical Items (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	40,031	12,589
Short-term investments	0	0
Total assets	40,031	12,589
Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0	2,009
Short-term investments	875,642	833,846
Total assets	875,642	835,855
Significant Unobservable Inputs (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	294,180	249,709
Municipal Bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	294,180	249,709
Municipal Bonds [Member] \| Quoted Prices in Active Markets for Identical Items (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0	0
Municipal Bonds [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	294,180	249,709
Municipal Bonds [Member] \| Significant Unobservable Inputs (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	202,346	192,060
Corporate Bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	202,346	192,060
Corporate Bonds [Member] \| Quoted Prices in Active Markets for Identical Items (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0	0
Corporate Bonds [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	202,346	192,060
Corporate Bonds [Member] \| Significant Unobservable Inputs (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	19,135	39,474
U.S. Agency Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	19,135	39,474
U.S. Agency Securities [Member] \| Quoted Prices in Active Markets for Identical Items (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0	0
U.S. Agency Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	19,135	39,474
U.S. Agency Securities [Member] \| Significant Unobservable Inputs (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	352,928	345,000
Non-U.S. certificates of deposit [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	352,928	345,000
Non-U.S. certificates of deposit [Member] \| Quoted Prices in Active Markets for Identical Items (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] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	352,928	345,000
Non-U.S. certificates of deposit [Member] \| Significant Unobservable Inputs (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	7,053	7,603
Non-U.S. Government Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	7,053	7,603
Non-U.S. Government Securities [Member] \| Quoted Prices in Active Markets for Identical Items (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	0	0
Non-U.S. Government Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Short-term investments	7,053	7,603
Non-U.S. Government Securities [Member] \| Significant Unobservable Inputs (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] \| Quoted Prices in Active Markets for Identical Items (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0	0
Municipal Bonds [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0	2,009
Municipal Bonds [Member] \| Significant Unobservable Inputs (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	40,031	12,589
Money Market Funds [Member] \| Quoted Prices in Active Markets for Identical Items (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	40,031	12,589
Money Market Funds [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0	0
Money Market Funds [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	$ 0	$ 0