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Fair Value of Financial Instruments - Summary of financial instruments (Details) - USD ($)
$ in Thousands
Apr. 02, 2022
Jan. 01, 2022
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