Fair Value of Financial Instruments - Summary of financial instruments (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Jan. 01, 2022
Financial assets and liabilities measured at fair value on a recurring basis
Short-term investments	$ 893,131	$ 964,582
Recurring
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	341,858	852,242
Short-term investments	893,131	964,582
Other assets, net		4,980
Total	1,234,989	1,821,804
Recurring | Money market funds
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	301,640	845,740
Recurring | Government debt securities
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	12,988	2,950
Short-term investments	306,611	191,121
Recurring | Corporate debt securities
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	27,230	3,552
Short-term investments	586,520	773,461
Recurring | Auction rate securities
Financial assets and liabilities measured at fair value on a recurring basis
Other assets, net		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	314,628	845,740
Short-term investments	207,560	71,509
Total	522,188	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	301,640	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
Cash equivalents	12,988
Short-term investments	207,560	71,509
Recurring | Significant Other Observable Inputs (Level 2)
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	27,230	6,502
Short-term investments	685,571	893,073
Total	712,801	899,575
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	99,051	119,612
Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	27,230	3,552
Short-term investments	$ 586,520	773,461
Recurring | Significant Unobservable Inputs (Level 3)
Financial assets and liabilities measured at fair value on a recurring basis
Other assets, net		4,980
Total		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		$ 4,980