Acquisitions Purchase Price (Details) - USD ($) $ in Millions		5 Months Ended	6 Months Ended		12 Months Ended
	Mar. 31, 2016	Dec. 31, 2016	Jul. 02, 2016	Jun. 27, 2015	Dec. 31, 2015
Purchase Price
Cash paid			$ 1,110.1	$ 298.7
Debt Assumed			254.8
Purchase Price Payable			59.6
Cash acquired			(77.9)
Total Purchase Price			1,346.6
Net Assets Acquired [Abstract]
Current assets			161.7
Property, plant and equipment			19.3
Goodwill			705.0
Other assets			7.9
Liabilities assumed			(248.2)
Total Purchase Price			$ 1,346.6
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)			12 years
Other Information
Purchase Price Paid For Acquisitions Completed In A Prior Year			$ 1.0
In-Process Research and Development [Member]
Net Assets Acquired [Abstract]
Indefinite-lived intangible assets			11.0
Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			$ 414.9
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)			15 years
Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			$ 233.4
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)			9 years
Tradenames and other [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			$ 41.6
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in years)			9 years
FEI Company [Member]
Other Information
Revenue Reported by Acquired Entity					$ 930.0
Affymetrix, Inc. [Member]
Purchase Price
Cash paid	$ 1,105.9
Debt Assumed	254.2
Purchase Price Payable	59.5
Cash acquired	(77.8)
Total Purchase Price	1,341.8
Net Assets Acquired [Abstract]
Current assets	160.6
Property, plant and equipment	19.3
Goodwill	702.0
Other assets	7.8
Liabilities assumed	(246.4)
Total Purchase Price	1,341.8
Other Information
Revenue Reported by Acquired Entity					$ 360.0
Goodwill, Expected Tax Deductible Amount	0.0
Deferred Tax Liabilities, Undistributed Foreign Earnings	156.0
Affymetrix, Inc. [Member] | In-Process Research and Development [Member]
Net Assets Acquired [Abstract]
Indefinite-lived intangible assets	11.0
Affymetrix, Inc. [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	413.2
Affymetrix, Inc. [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	232.7
Affymetrix, Inc. [Member] | Tradenames and other [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets	$ 41.6
Other [Member]
Purchase Price
Cash paid			$ 4.2
Debt Assumed			0.6
Purchase Price Payable			0.1
Cash acquired			(0.1)
Total Purchase Price			4.8
Net Assets Acquired [Abstract]
Current assets			1.1
Goodwill			3.0
Other assets			0.1
Liabilities assumed			(1.8)
Total Purchase Price			4.8
Other [Member] | Customer Relationships [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			1.7
Other [Member] | Product Technology [Member]
Net Assets Acquired [Abstract]
Definite-lived intangible assets			$ 0.7
Scenario, Forecast [Member] | FEI Company [Member]
Purchase Price
Cash paid		$ 4,200.0