Income Taxes - Reconciliation of federal statutory income tax rate to effective income tax rate for continuing operations (Details)	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Federal statutory income tax rate to effective income tax rate for continuing operations
U.S. federal statutory income tax rate (as a percent)	35.00%	35.00%	35.00%
Increase (decrease) resulting from:
Federal tax settlement (as a percent)	(23.50%)
State income taxes (net of federal impact) (as a percent)	0.80%	0.20%	1.00%
Non-U.S. tax rate differential and foreign tax credits (as a percent)	(2.70%)	(3.60%)	(5.80%)
Domestic manufacturing deduction (as a percent)	(1.60%)	(2.70%)	(1.10%)
Research credit (as a percent)	(3.20%)	(1.50%)	(1.50%)
Other, net (as a percent)	(1.00%)	0.70%	1.50%
Effective income tax rate (as a percent)	3.80%	28.10%	29.10%
State income taxes
Increase (decrease) resulting from:
Change in valuation allowance (as a percent)		(0.70%)	(0.20%)
Non-U.S.
Increase (decrease) resulting from:
Change in valuation allowance (as a percent)		(1.40%)	(0.60%)