Fair Value Measurements (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended | | |
Dec. 29, 2018 | Dec. 30, 2017 | Dec. 29, 2018 | Dec. 30, 2017 | Jun. 30, 2018 | Mar. 31, 2018 | Jun. 24, 2017 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Asset Impairment Charges | $ 753 | $ 850 | $ 753 | $ 892 | $ 900 | | |
Interest Expense, Debt | 11,200 | 12,400 | 23,600 | 24,700 | | | |
Cash and cash equivalents | 1,406,740 | $ 1,631,510 | 1,406,740 | $ 1,631,510 | 1,543,484 | | $ 2,246,121 |
Available-for-sale Securities | | | | | 1,082,915 | | |
Business Combination, Contingent Consideration, Liability | | | | | 8,000 | $ 16,000 | |
Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Total Assets | 723,017 | | 723,017 | | 1,281,433 | | |
Total Liabilities | 10,374 | | 10,374 | | 17,845 | | |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Total Assets | 167,698 | | 167,698 | | 98,467 | | |
Total Liabilities | 0 | | 0 | | 0 | | |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Total Assets | 555,319 | | 555,319 | | 1,182,966 | | |
Total Liabilities | 270 | | 270 | | 1,845 | | |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Total Assets | 0 | | 0 | | 0 | | |
Total Liabilities | 10,104 | | 10,104 | | 16,000 | | |
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and Cash Equivalents, Fair Value Disclosure | 167,698 | | 167,698 | | 98,467 | | |
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 167,698 | | 167,698 | | 98,467 | | |
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | | | | | 0 | | |
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | | | | | 0 | | |
Commercial paper | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 45,063 | | |
Available-for-sale Securities | 38,437 | | 38,437 | | 64,354 | | |
Commercial paper | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 45,063 | | |
Available-for-sale Securities | 38,437 | | 38,437 | | 64,354 | | |
Corporate debt securities | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 3,819 | | |
Available-for-sale Securities | 263,562 | | 263,562 | | 367,765 | | |
Corporate debt securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 3,819 | | |
Available-for-sale Securities | 263,562 | | 263,562 | | 367,765 | | |
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | | 0 | | 30,988 | | |
Available-for-sale Securities | 216,905 | | 216,905 | | 598,368 | | |
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Available-for-sale Securities | | | | | 0 | | |
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 30,988 | | |
Available-for-sale Securities | 216,905 | | 216,905 | | 598,368 | | |
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Available-for-sale Securities | | | | | 0 | | |
Foreign Exchange Forward [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Foreign currency forward contracts | 418 | | 418 | | 235 | | |
Foreign currency forward contracts | 270 | | 270 | | 1,845 | | |
Foreign Exchange Forward [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Foreign currency forward contracts | | | | | 0 | | |
Foreign currency forward contracts | 0 | | 0 | | 0 | | |
Foreign Exchange Forward [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Foreign currency forward contracts | 418 | | 418 | | 235 | | |
Foreign currency forward contracts | 270 | | 270 | | 1,845 | | |
Foreign Exchange Forward [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Foreign currency forward contracts | | | | | 0 | | |
Foreign currency forward contracts | 0 | | 0 | | 0 | | |
Accrued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Business Combination, Contingent Consideration, Liability | 9,052 | | 9,052 | | 8,000 | | |
Accrued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Business Combination, Contingent Consideration, Liability | 9,052 | | 9,052 | | | | |
Certificates of deposit | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 1,000 | | 1,000 | | 6,000 | | |
Available-for-sale Securities | 34,997 | | 34,997 | | 52,428 | | |
Certificates of deposit | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 1,000 | | 1,000 | | 6,000 | | |
Available-for-sale Securities | 34,997 | | 34,997 | | 52,428 | | |
Agency Securities | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 13,946 | | |
Agency Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 0 | | |
Agency Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 13,946 | | |
Agency Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Cash and cash equivalents | 0 | | 0 | | 0 | | |
Other Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Business Combination, Contingent Consideration, Liability | 1,052 | | 1,052 | | 8,000 | | |
Other Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | | |
Business Combination, Contingent Consideration, Liability | $ 1,052 | | $ 1,052 | | $ 8,000 | | |