Fair Value Measurements (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 24, 2017	Jun. 25, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities, fair value disclosure		$ 498,718	$ 125,439
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Assets and Liabilities Class [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure		1,452,028	1,824,455
Liabilities, fair value disclosure		386	1,327
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value disclosure	[1]	952,462	1,658,321
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities, fair value disclosure	[2]	498,718	125,439
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	848	695
Foreign currency contract, liability, fair value disclosure	[4]	386	1,327
Fair Value, Measurements, Recurring [Member] | Common Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	0	40,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Assets and Liabilities Class [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure		952,462	1,658,321
Liabilities, fair value disclosure		0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value disclosure	[1]	952,462	1,658,321
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities, fair value disclosure	[2]	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	0	0
Foreign currency contract, liability, fair value disclosure	[4]	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Assets and Liabilities Class [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure		499,566	166,134
Liabilities, fair value disclosure		386	1,327
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value disclosure	[1]	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities, fair value disclosure	[2]	498,718	125,439
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	848	695
Foreign currency contract, liability, fair value disclosure	[4]	386	1,327
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	0	40,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Assets and Liabilities Class [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure		0	0
Liabilities, fair value disclosure		0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value disclosure	[1]	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities, fair value disclosure	[2]	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	0	0
Foreign currency contract, liability, fair value disclosure	[4]	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contract, asset, fair value disclosure	[3]	$ 0	$ 0

[1] Included in Cash and cash equivalents in the accompanying Consolidated Balance Sheets.

[2] Included in Short-term investments in the accompanying Consolidated Balance Sheets.

[3] Included in Other current assets in the accompanying Consolidated Balance Sheets.

[4] Included in Accrued expenses in the accompanying Consolidated Balance Sheets.