Income Taxes (Effective Income Tax Rate) (Details)	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	35.00%	35.00%	35.00%
State and local taxes, net of federal benefit	1.60%	1.90%	2.50%
Research and development tax credits	(2.00%)	(3.40%)	(3.30%)
Investment tax credits	(1.80%)	(1.20%)	(1.90%)
Qualified production activity deduction	(1.60%)	(2.20%)	(2.00%)
Foreign rate differential	(2.70%)	(2.10%)	(3.70%)
Net reversals for unrecognized tax benefits	(1.50%)	(2.10%)	(1.40%)
Stock-based compensation (ASU 2016-09)	(3.50%)	(0.00%)	(0.00%)
Other	(2.60%)	(1.60%)	(1.60%)
Effective income tax rate	20.90%	24.30%	23.60%