Fair Value of Financial Instruments - Summary of financial instruments (Details) - USD ($) $ in Thousands	Jul. 02, 2022	Jan. 01, 2022
Financial assets and liabilities measured at fair value on a recurring basis
Short-term investments	$ 972,845	$ 964,582
Recurring
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	321,209	852,242
Short-term investments	972,845	964,582
Other assets, net		4,980
Total assets at fair value	1,294,054	1,821,804
Recurring | Money market funds
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	275,655	845,740
Recurring | Government debt securities
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	28,620	2,950
Short-term investments	303,662	191,121
Recurring | Corporate debt securities
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	16,934	3,552
Short-term investments	669,183	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	299,272	845,740
Short-term investments	211,319	71,509
Total assets at fair value	510,591	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	275,655	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	23,617
Short-term investments	211,319	71,509
Recurring | Significant Other Observable Inputs (Level 2)
Financial assets and liabilities measured at fair value on a recurring basis
Cash equivalents	21,937	6,502
Short-term investments	761,526	893,073
Total assets at fair value	783,463	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	5,003	2,950
Short-term investments	92,343	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	16,934	3,552
Short-term investments	$ 669,183	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 assets at fair value		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