Goodwill and Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Goodwill (Details) $ in Thousands	6 Months Ended
Jul. 01, 2017 USD ($)
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	$ 787,517
Adjustments to Goodwill, Acquisitions/(Divestitures)	(36,009)
Adjustments to Goodwill, Transfers	0
Adjustments to Goodwill, Foreign Exchange	24,945
Gross carrying amount, balance at the end of the period	776,453
RMS
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	56,397
Adjustments to Goodwill, Acquisitions/(Divestitures)	0
Adjustments to Goodwill, Transfers	0
Adjustments to Goodwill, Foreign Exchange	793
Gross carrying amount, balance at the end of the period	57,190
DSA
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	563,476
Adjustments to Goodwill, Acquisitions/(Divestitures)	(9)
Adjustments to Goodwill, Transfers	0
Adjustments to Goodwill, Foreign Exchange	18,125
Gross carrying amount, balance at the end of the period	581,592
Manufacturing
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	167,644
Adjustments to Goodwill, Acquisitions/(Divestitures)	(36,000)
Adjustments to Goodwill, Transfers	0
Adjustments to Goodwill, Foreign Exchange	6,027
Gross carrying amount, balance at the end of the period	$ 137,671

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a,h)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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