Goodwill and other intangible assets, net Components of intangible assets (Details) - USD ($) $ in Thousands	Sep. 27, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 1,589,289	$ 1,573,043
Accumulated amortization	(396,925)	(356,323)
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	623,211	624,574
Accumulated amortization	(209,262)	(192,876)
Intellectual Property
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	494,457	467,068
Accumulated amortization	(166,909)	(146,131)
Distribution Rights
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	23,363	16,101
Accumulated amortization	(14,208)	(14,243)
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	387,132	396,269
Accumulated amortization	(6,115)	(2,764)
Non-compete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	2,218	337
Accumulated amortization	(431)	(309)
In Process Research and Development
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	0	0
Indefinite-lived intangible assets	$ 58,908	$ 68,694