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Fair Value of Financial Instruments - Summary of financial instruments (Details) - USD ($) $ in Thousands | Apr. 02, 2022 | Jan. 01, 2022
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Financial assets and liabilities measured at fair value on a recurring basis |  |
Short-term investments | $ 1,167,807 | $ 964,582
Recurring |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 521,324 | 852,242
Short-term investments | 1,167,807 | 964,582
Other assets, net | 4,944 | 4,980
Total assets at fair value | 1,694,075 | 1,821,804
Recurring | Money market funds |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 489,907 | 845,740
Recurring | Corporate debt securities |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 31,417 | 3,552
Short-term investments | 873,423 | 773,461
Recurring | Government debt securities |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents |  | 2,950
Short-term investments | 294,384 | 191,121
Recurring | Auction rate securities |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Other assets, net | 4,944 | 4,980
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 489,907 | 845,740
Short-term investments | 209,331 | 71,509
Total assets at fair value | 699,238 | 917,249
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 489,907 | 845,740
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government debt securities |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Short-term investments | 209,331 | 71,509
Recurring | Significant Other Observable Inputs (Level 2) |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 31,417 | 6,502
Short-term investments | 958,476 | 893,073
Total assets at fair value | 989,893 | 899,575
Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 31,417 | 3,552
Short-term investments | 873,423 | 773,461
Recurring | Significant Other Observable Inputs (Level 2) | Government debt securities |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents |  | 2,950
Short-term investments | 85,053 | 119,612
Recurring | Significant Unobservable Inputs (Level 3) |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Other assets, net | 4,944 | 4,980
Total assets at fair value | 4,944 | 4,980
Recurring | Significant Unobservable Inputs (Level 3) | Auction rate securities |  |
Financial assets and liabilities measured at fair value on a recurring basis |  |
Other assets, net | $ 4,944 | $ 4,980

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