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Fair Value of Financial Instruments - Available-for-sale investments (Details) - USD ($)
$ in Thousands
Jul. 02, 2022
Jan. 01, 2022
Continuous unrealized loss position, Fair Value    
Fair value of available-for-sale securities, continuous loss position for less than twelve months $ 934,728 $ 545,874
Fair value of available-for-sale securities, continuous loss position for twelve months or greater 11,467 5,306
Total fair value of available-for-sale securities, continuous loss position 946,195 551,180
Continuous unrealized loss position, Gross Unrealized Losses    
Available-for-sale securities, continuous loss position for less than 12 months, gross unrealized losses (15,118) (2,201)
Available-for-sale securities, continuous loss position for 12 months or greater, gross unrealized losses (250) (1,021)
Available-for-sale securities, total gross unrealized losses (15,368) (3,222)
Government debt securities    
Continuous unrealized loss position, Fair Value    
Fair value of available-for-sale securities, continuous loss position for less than twelve months 304,308 126,957
Fair value of available-for-sale securities, continuous loss position for twelve months or greater 2,051  
Total fair value of available-for-sale securities, continuous loss position 306,359 126,957
Continuous unrealized loss position, Gross Unrealized Losses    
Available-for-sale securities, continuous loss position for less than 12 months, gross unrealized losses (5,200) (750)
Available-for-sale securities, continuous loss position for 12 months or greater, gross unrealized losses (60)  
Available-for-sale securities, total gross unrealized losses (5,260) (750)
Corporate debt securities    
Continuous unrealized loss position, Fair Value    
Fair value of available-for-sale securities, continuous loss position for less than twelve months 630,420 418,917
Fair value of available-for-sale securities, continuous loss position for twelve months or greater 9,416 326
Total fair value of available-for-sale securities, continuous loss position 639,836 419,243
Continuous unrealized loss position, Gross Unrealized Losses    
Available-for-sale securities, continuous loss position for less than 12 months, gross unrealized losses (9,918) (1,451)
Available-for-sale securities, continuous loss position for 12 months or greater, gross unrealized losses (190) (1)
Available-for-sale securities, total gross unrealized losses $ (10,108) (1,452)
Auction rate securities    
Continuous unrealized loss position, Fair Value    
Fair value of available-for-sale securities, continuous loss position for twelve months or greater   4,980
Total fair value of available-for-sale securities, continuous loss position   4,980
Continuous unrealized loss position, Gross Unrealized Losses    
Available-for-sale securities, continuous loss position for 12 months or greater, gross unrealized losses   (1,020)
Available-for-sale securities, total gross unrealized losses   $ (1,020)