Acquisitions (Lake Region Medical - Narrative) (Details) - Lake Region Medical [Member] - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Oct. 27, 2015	Jan. 01, 2016	Jan. 01, 2016
Business Acquisition [Line Items]
Effective date of acquisition	Oct. 27, 2015
Name of acquired entity	Lake Region Medical Holdings, Inc.
Total purchase consideration	$ 1,770.0
Description of acquired entity	Lake Region Medical specializes in the design, development, and manufacturing of products across the medical component and device spectrum primarily serving the cardio, vascular and advanced surgical markets.
Repayments of Debt	$ 1,000.0
Reason for acquisition	The Company believes that the combination of Greatbatch and Lake Region Medical brings together two highly complementary organizations that can provide a new level of industry leading capabilities and services to original equipment manufacturer customers while building value for shareholders.
Total revenue included from the acquired entity		$ 138.6	$ 138.6
Total net loss included from the acquired entity			$ 17.4
Increase in inventory	$ 23.0
Customer Lists [Member]
Business Acquisition [Line Items]
Customer annual attrition rate	5.00%
Minimum [Member] | Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Royalty rate	0.25%
Minimum [Member] | Technology [Member]
Business Acquisition [Line Items]
Royalty rate	0.50%
Maximum [Member] | Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Royalty rate	1.00%
Maximum [Member] | Technology [Member]
Business Acquisition [Line Items]
Royalty rate	7.00%