Financial Instruments - Schedule of Amortized Cost and Fair Value of Cash Equivalents, Short-Term Investments, and Restricted Cash and Investments with Contractual Maturities (Details) $ in Thousands	Jun. 28, 2020 USD ($)
Cost
Due in one year or less	$ 5,527,654
Due after one year through five years	433,973
Due in more than five years	19,018
Debt securities, Cost	5,980,645
Estimated Fair Value
Due in one year or less	5,529,241
Due after one year through five years	437,872
Due in more than five years	19,188
Estimated fair value due, Total	$ 5,986,301