Goodwill and other intangible assets, net Components of intangible assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 1,549,695	$ 1,573,043
Accumulated amortization	(366,146)	(356,323)
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	616,788	624,574
Accumulated amortization	(196,679)	(192,876)
Intellectual Property
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	489,857	467,068
Accumulated amortization	(151,521)	(146,131)
Distribution Rights
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	15,519	16,101
Accumulated amortization	(13,751)	(14,243)
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	386,194	396,269
Accumulated amortization	(3,858)	(2,764)
Non-compete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	337	337
Accumulated amortization	(337)	(309)
In Process Research and Development
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	0	0
Indefinite-lived intangible assets	$ 41,000	$ 68,694

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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