Financial Instruments (Details 2) $ in Thousands	Jan. 02, 2016 USD ($)
Investments, All Other Investments [Abstract]
Marketable debt securities with contractual maturities greater than one year but classified as short-term investment	$ 1,780,000
Amortized cost and estimated fair value of marketable debt securities
Amortized Cost Due in one year or less	1,232,756
Amortized Cost Due after one year through five years	503,374
Amortized Cost Due after five years through ten years	272,546
Amortized Cost Due after ten years	1,153,078
Amortized Cost Total	3,161,754
Estimated Fair Value Due in one year or less	1,232,713
Estimated Fair Value Due after one year through five years	501,371
Estimated Fair Value Due after five years through ten years	271,353
Estimated Fair Value Due after ten years	1,148,041
Estimated Fair Value Total	$ 3,153,478