Financial Instruments (Details 2) $ in Thousands	Sep. 28, 2019 USD ($)
Amortized Cost
Due in one year or less	$ 1,134,474
Due after one year through five years	50,267
Due after five years through ten years	100,199
Due after ten years	402,510
Amortized Cost Total	1,687,450
Estimated Fair Value
Due in one year or less	1,134,470
Due after one year through five years	50,118
Due after five years through ten years	100,173
Due after ten years	400,369
Estimated Fair Value Total	1,685,130
Marketable debt securities with contractual maturities greater than one year but classified as short-term investment	$ 550,700