Investments and Fair Value Measurements-Fixed Income Maturities (Details 7) - Fixed Income Securities [Member] - USD ($) $ in Thousands		Apr. 03, 2016	Jan. 03, 2016
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Due in one year or less		$ 886,076
After one year through five years		218,573
After five years through ten years		60,531
After ten years		262,467
Total, Amortized Cost	[1]	1,427,647	$ 2,730,700
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in one year or less		886,479
After one year through five years		219,038
After five years through ten years		60,532
After ten years		262,535
Total, Fair Value		$ 1,428,584	$ 2,732,022

[1] Amortized cost includes adjustments made to the cost basis of an investment for accretion, amortization and other-than- temporary impairment.