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Financial Instruments - Schedule of Cash, Cash Equivalents, Short-Term Investments and Restricted Cash and Investments Unrealized Loss Positions (Details) $ in Thousands | Jun. 27, 2021 USD ($)
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Fair Value |
Unrealized Losses Less than 12 Months | $ 420,775
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (600)
U.S. Treasury and agencies |
Fair Value |
Unrealized Losses Less than 12 Months, available for sale | 122,791
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months, available for sale | (47)
Mutual funds |
Fair Value |
Unrealized Losses Less than 12 Months, trading | 2,642
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months, trading | (33)
Foreign government bonds |
Fair Value |
Unrealized Losses Less than 12 Months, available for sale | 2,133
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months, available for sale | (4)
Corporate notes and bonds |
Fair Value |
Unrealized Losses Less than 12 Months, available for sale | 278,133
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months, available for sale | (457)
Mortgage backed securities - commercial |
Fair Value |
Unrealized Losses Less than 12 Months, available for sale | 15,076
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months, available for sale | $ (59)

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